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icholy/cat048.xml

Created February 5, 2018 22:36
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cat048.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Category SYSTEM "asterix.dtd">
<!--
Asterix Category 048 v1.14 definition
Author: dmarkus
Created: 13.2.2009.
Modified: 3.11.2013 : added items I048/55, I048/065 and I048/SP (FPS117-specific)
Modified: 22.11.2013 : I048/SP defined as Explicit
Modified: 28.04.2014. (dsalantic) Special characters removed from BitsShortName, some BitsShortName renamed, tabs aligned
Modified: 05.05.2014. (dsalantic) Mode-1 displayed as decimal (and not hex)
Modified: 07.07.2014. (dsalantic) SAM and PAM are signed
Modified: 30.03.2016. (dsalantic) DataItem 110 "Height Measured by a 3D Radar" is signed not unsigned:
-->
<Category id="48" name="Transmission of Monoroadar Data" ver="1.14">
<DataItem id="010">
<DataItemName>Data Source Identifier</DataItemName>
<DataItemDefinition>Identification of the radar station from which the data are received.</DataItemDefinition>
<DataItemFormat desc="Two-octets fixed length data item.">
<Fixed length="2">
<Bits from="16" to="9">
<BitsShortName>SAC</BitsShortName>
<BitsName>System Area Code</BitsName>
</Bits>
<Bits from="8" to="1">
<BitsShortName>SIC</BitsShortName>
<BitsName>System Identification Code</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
</DataItem>
<DataItem id="020">
<DataItemName>Target Report Descriptor</DataItemName>
<DataItemDefinition>Type and characteristics of the target report.</DataItemDefinition>
<DataItemFormat desc="Variable length Data Item comprising a first part of oneoctet, followed by one-octet extents as necessary.">
<Variable>
<Fixed length="1">
<Bits from="8" to="6">
<BitsShortName>TYP</BitsShortName>
<BitsName>TYP</BitsName>
<BitsValue val="0">No detection</BitsValue>
<BitsValue val="1">Single PSR detection</BitsValue>
<BitsValue val="2">Single SSR detection</BitsValue>
<BitsValue val="3">PSR+SSR detection</BitsValue>
<BitsValue val="4">Single ModeS All-Call</BitsValue>
<BitsValue val="5">Single ModeS Roll-Call</BitsValue>
<BitsValue val="6">PSR+ModeS All-Call</BitsValue>
<BitsValue val="7">PSR+ModeS Roll-Call</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>SIM</BitsShortName>
<BitsName>SIM</BitsName>
<BitsValue val="0">Actual target report</BitsValue>
<BitsValue val="1">Simulated target report</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>RDP</BitsShortName>
<BitsName>RDP</BitsName>
<BitsValue val="0">Report from RDP Chain 1</BitsValue>
<BitsValue val="1">Report from RDP Chain 2</BitsValue>
</Bits>
<Bits bit="3">
<BitsShortName>SPI</BitsShortName>
<BitsName>SPI</BitsName>
<BitsValue val="0">Absence of SPI</BitsValue>
<BitsValue val="1">Special Position Identification</BitsValue>
</Bits>
<Bits bit="2">
<BitsShortName>RAB</BitsShortName>
<BitsName>RAB</BitsName>
<BitsValue val="0">Report from aircraft transponder</BitsValue>
<BitsValue val="1">Plot or track from a fixed transponder</BitsValue>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into first extent</BitsValue>
</Bits>
</Fixed>
<Fixed length="1">
<Bits bit="8">
<BitsShortName>TST</BitsShortName>
<BitsName>TST</BitsName>
<BitsValue val="0">Real target report</BitsValue>
<BitsValue val="1">Test target report</BitsValue>
</Bits>
<Bits from="7" to="6">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="5">
<BitsShortName>ME</BitsShortName>
<BitsName>ME</BitsName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Military emergency</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>MI</BitsShortName>
<BitsName>MI</BitsName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Military identification</BitsValue>
</Bits>
<Bits from="3" to="2">
<BitsShortName>FOEFRI</BitsShortName>
<BitsName>FOE/FRI</BitsName>
<BitsValue val="0">No mode 4 interrogation</BitsValue>
<BitsValue val="1">Friendly target</BitsValue>
<BitsValue val="2">Unknown target</BitsValue>
<BitsValue val="3">No reply</BitsValue>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into next extent</BitsValue>
</Bits>
</Fixed>
</Variable>
</DataItemFormat>
</DataItem>
<DataItem id="030">
<DataItemName>Warning/Error Conditions</DataItemName>
<DataItemDefinition>Warning/error conditions detected by a radar station for the target report involved.</DataItemDefinition>
<DataItemFormat desc="Variable length Data Item comprising a first part of one octet, followed by one-octet extents as necessary.">
<Variable>
<Fixed length="1">
<Bits from="8" to="2">
<BitsShortName>WE</BitsShortName>
<BitsName>First warning/error condition value</BitsName>
<BitsValue val="0">Not defined, never used</BitsValue>
<BitsValue val="1">Multipath Reply (Reflection)</BitsValue>
<BitsValue val="2">Sidelobe Reply</BitsValue>
<BitsValue val="3">Split plot</BitsValue>
<BitsValue val="4">Second time around reply</BitsValue>
<BitsValue val="5">Angel</BitsValue>
<BitsValue val="6">Terrestrial vehicles</BitsValue>
<BitsValue val="7">Fixed PSR plot</BitsValue>
<BitsValue val="8">Slow PSR plot</BitsValue>
<BitsValue val="9">Low quality PSR plot</BitsValue>
<BitsValue val="10">Phantom SSR plot</BitsValue>
<BitsValue val="11">Non-Matching Mode-3/A Code</BitsValue>
<BitsValue val="12">Mode C code/Mode S altitude code abnormal value compared to the track</BitsValue>
<BitsValue val="13">Target in Clutter Area</BitsValue>
<BitsValue val="14">Maximum doppler Responsein Zero Filter</BitsValue>
<BitsValue val="15">Transponder anomaly detected</BitsValue>
<BitsValue val="16">Duplicated or Illegal Mode S Aircraft Address</BitsValue>
<BitsValue val="17">Mode S error correction applied</BitsValue>
<BitsValue val="18">Undecodable Mode C code / Mode S altitude code</BitsValue>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into next extent</BitsValue>
</Bits>
</Fixed>
</Variable>
</DataItemFormat>
</DataItem>
<DataItem id="040">
<DataItemName>Measured Position in Polar Coordinates</DataItemName>
<DataItemDefinition>Measured position of an aircraft in local polar coordinates.</DataItemDefinition>
<DataItemFormat desc="Four-octet fixed length Data Item.">
<Fixed length="4">
<Bits from="32" to="17">
<BitsShortName>RHO</BitsShortName>
<BitsUnit max="256" scale="0.00390625">NM</BitsUnit>
</Bits>
<Bits from="16" to="1">
<BitsShortName>THETA</BitsShortName>
<BitsUnit scale="0.0054931640625">deg</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
</DataItem>
<DataItem id="042">
<DataItemName>Calculated Position in Cartesian Coordinates</DataItemName>
<DataItemDefinition>Calculated position of an aircraft in cartesian coordinates</DataItemDefinition>
<DataItemFormat desc="Four-octet fixed length Data Item.">
<Fixed length="4">
<Bits from="32" to="17" encode="signed">
<BitsShortName>X</BitsShortName>
<BitsName>X component</BitsName>
<BitsUnit scale="0.0078125">NM</BitsUnit>
</Bits>
<Bits from="16" to="1" encode="signed">
<BitsShortName>Y</BitsShortName>
<BitsName>Y component</BitsName>
<BitsUnit scale="0.0078125">NM</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote />
</DataItem>
<DataItem id="050">
<DataItemName>Mode-2 Code</DataItemName>
<DataItemDefinition>Reply to Mode-2 interrogation</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits bit="16">
<BitsShortName>V</BitsShortName>
<BitsValue val="0">Code validated</BitsValue>
<BitsValue val="1">Code not validated</BitsValue>
</Bits>
<Bits bit="15">
<BitsShortName>G</BitsShortName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Garbled code</BitsValue>
</Bits>
<Bits bit="14">
<BitsShortName>L</BitsShortName>
<BitsValue val="0">Mode-2 code as derived from the reply of the transponder</BitsValue>
<BitsValue val="1">Smoothed Mode-2 code as provided by a local tracker</BitsValue>
</Bits>
<Bits bit="13">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits from="12" to="1" encode="octal">
<BitsShortName>Mode2</BitsShortName>
<BitsName>Mode-2 code</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>Smoothed Mode-2 data (bit-14 set to one) is used when the plot contains no Mode-2 code or the Mode-2 codes of the plot and track are different. 2. Bits-16/15 have no meaning in the case of a smoothed Mode-2 and are set to 0 for a calculated track.</DataItemNote>
</DataItem>
<DataItem id="055">
<DataItemName>Mode-1 Code</DataItemName>
<DataItemDefinition>Reply to Mode-1 interrogation</DataItemDefinition>
<DataItemFormat desc="One-octet fixed length Data Item.">
<Fixed length="1">
<Bits bit="8">
<BitsShortName>V</BitsShortName>
<BitsValue val="0">Code validated</BitsValue>
<BitsValue val="1">Code not validated</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>G</BitsShortName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Garbled code</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>L</BitsShortName>
<BitsValue val="0">Mode-1 code as derived from the reply of the transponder</BitsValue>
<BitsValue val="1">Smoothed Mode-1 code as provided by a local tracker</BitsValue>
</Bits>
<Bits from="5" to="1">
<BitsShortName>Mode1</BitsShortName>
<BitsName>Mode-1 code</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>This item is optional. When used, it shall be sent when: 1) Mode 1 is present. Then, it represents the Mode 1 code for the plot, even if associated with a track. 2) Mode 1 is absent and local tracking is performed. It shall then be sent with the bit-6 (L) set to one..... Bit 7 has no meaning in the case of a smoothed Mode 1 and is set to 0 for a calculated track.</DataItemNote>
</DataItem>
<DataItem id="060">
<DataItemName>Mode-2 Code Confidence Indicator</DataItemName>
<DataItemDefinition>Confidence level for each bit of a Mode-2 reply as provided by a monopulse SSR station.</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits from="16" to="13">
<BitsShortName>spare</BitsShortName>
<BitsName>spares bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="12">
<BitsShortName>QA4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="11">
<BitsShortName>QA2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="10">
<BitsShortName>QA1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="9">
<BitsShortName>QB4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="8">
<BitsShortName>QB2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>QB1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>QC4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>QC2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>QC1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="3">
<BitsShortName>QD4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="2">
<BitsShortName>QD2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="1">
<BitsShortName>QD1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>This Data Item is only transmitted if at least one pulse is of low quality.</DataItemNote>
</DataItem>
<DataItem id="065">
<DataItemName>Mode-1 Code Confidence Indicator</DataItemName>
<DataItemDefinition>Confidence level for each bit of a Mode-1 reply as provided by a monopulse SSR station.</DataItemDefinition>
<DataItemFormat desc="One-octet fixed length Data Item.">
<Fixed length="1">
<Bits from="8" to="6">
<BitsShortName>spare</BitsShortName>
<BitsName>spares bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="5">
<BitsShortName>QA4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>QA2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="3">
<BitsShortName>QA1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="2">
<BitsShortName>QB2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="1">
<BitsShortName>QB1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>This data item is optional. When used, it shall be transmitted only when at least one pulse is of low quality. It represents the confidence level for each reply bit of the Mode 1 code of the plot.</DataItemNote>
</DataItem>
<DataItem id="070">
<DataItemName>Mode-3/A Code</DataItemName>
<DataItemDefinition>Mode-3/A code converted into octal representation.</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits bit="16">
<BitsShortName>V</BitsShortName>
<BitsValue val="0">Code validated</BitsValue>
<BitsValue val="1">Code not validated</BitsValue>
</Bits>
<Bits bit="15">
<BitsShortName>G</BitsShortName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Garbled code</BitsValue>
</Bits>
<Bits bit="14">
<BitsShortName>L</BitsShortName>
<BitsValue val="0">Mode-3/A code as derived from the reply of the transponder</BitsValue>
<BitsValue val="1">Smoothed Mode-3/A code as provided by a local tracker</BitsValue>
</Bits>
<Bits bit="13">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits from="12" to="1" encode="octal">
<BitsShortName>Mode3A</BitsShortName>
<BitsName>Mode-3/A reply code</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>The detector signals a garbled code when at least two replies are overlapping or error corection has been attempted.</DataItemNote>
</DataItem>
<DataItem id="080">
<DataItemName>Mode-3/A Code Confidence Indicator</DataItemName>
<DataItemDefinition>Confidence level for each bit of a Mode-3/A reply as provided by a monopulse SSR station.</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits from="16" to="13">
<BitsShortName>spare</BitsShortName>
<BitsName>spares bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="12">
<BitsShortName>QA4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="11">
<BitsShortName>QA2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="10">
<BitsShortName>QA1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="9">
<BitsShortName>QB4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="8">
<BitsShortName>QB2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>QB1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>QC4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>QC2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>QC1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="3">
<BitsShortName>QD4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="2">
<BitsShortName>QD2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="1">
<BitsShortName>QD1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>This Data Item is only transmitted if at least one pulse is of low quality.</DataItemNote>
</DataItem>
<DataItem id="090">
<DataItemName>Flight Level</DataItemName>
<DataItemDefinition>Flight level in Binary Representation</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits bit="16">
<BitsShortName>V</BitsShortName>
<BitsValue val="0">Code validated</BitsValue>
<BitsValue val="1">Code not validated</BitsValue>
</Bits>
<Bits bit="15">
<BitsShortName>G</BitsShortName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Garbled code</BitsValue>
</Bits>
<Bits from="14" to="1" encode="signed">
<BitsShortName>FL</BitsShortName>
<BitsName>FlightLevel</BitsName>
<BitsUnit scale="0.25">FL</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>The detector signals a garbled code when at least two replies are overlapping or error corection has been attempted.</DataItemNote>
</DataItem>
<DataItem id="100">
<DataItemName>Mode-C Code and Code Confidence Indicator</DataItemName>
<DataItemDefinition>Mode-C height in Gray notation as received from the transponder together with the confidence level for each reply bit as provided by a MSSR/ModeS station.</DataItemDefinition>
<DataItemFormat desc="Four-octet fixed length Data Item.">
<Fixed length="4">
<Bits bit="32">
<BitsShortName>V</BitsShortName>
<BitsValue val="0">Code validated</BitsValue>
<BitsValue val="1">Code not validated</BitsValue>
</Bits>
<Bits bit="31">
<BitsShortName>G</BitsShortName>
<BitsValue val="0">Default</BitsValue>
<BitsValue val="1">Garbled code</BitsValue>
</Bits>
<Bits from="30" to="29">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits from="28" to="17">
<BitsShortName>ModeC</BitsShortName>
<BitsName>Mode-C reply in Gray notation</BitsName>
<!-- TODO gray notation -->
</Bits>
<Bits from="16" to="13">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="12">
<BitsShortName>QC1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="11">
<BitsShortName>QA1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="10">
<BitsShortName>QC2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="9">
<BitsShortName>QA2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="8">
<BitsShortName>QC4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>QA4</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>QB1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>QD1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>QB2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="3">
<BitsShortName>QD2</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="2">
<BitsShortName>QB1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
<Bits bit="1">
<BitsShortName>QD1</BitsShortName>
<BitsValue val="0">High quality pulse</BitsValue>
<BitsValue val="1">Low quality pulse</BitsValue>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>This Data Item is only transmitted if at least one pulse is of low quality. 2. The detector signals a garbled code when at least two replies are overlapping.</DataItemNote>
</DataItem>
<DataItem id="110">
<DataItemName>Height Measured by a 3D Radar</DataItemName>
<DataItemDefinition>Height mesured by a 3D radar, mean sea level is the zero reference level.</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits from="16" to="15">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits from="14" to="1" encode="signed">
<BitsShortName>3D_Height</BitsShortName>
<BitsName>3D_Height</BitsName>
<BitsUnit scale="25">ft</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote />
</DataItem>
<DataItem id="120">
<DataItemName>Radial Doppler Speed</DataItemName>
<DataItemDefinition>Information on the Doppler Speed of the target report.</DataItemDefinition>
<DataItemFormat desc="Compound Data Item, comprising a primary subfield of one octet, followed by one of the two defined subfields.">
<Compound>
<Variable>
<Fixed length="1">
<Bits bit="8">
<BitsShortName>CAL</BitsShortName>
<BitsName>CAL Presence</BitsName>
<BitsPresence>1</BitsPresence>
</Bits>
<Bits bit="7">
<BitsShortName>RDS</BitsShortName>
<BitsName>RDS Presence</BitsName>
<BitsPresence>2</BitsPresence>
</Bits>
<Bits from="6" to="2">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsConst>0</BitsConst>
</Bits>
</Fixed>
</Variable>
<Fixed length="2">
<Bits bit="16">
<BitsShortName>D</BitsShortName>
<BitsName>Doppler Speed Validation</BitsName>
<BitsValue val="0">Doppler speed is valid</BitsValue>
<BitsValue val="1">Doppler speed is doubtful</BitsValue>
</Bits>
<Bits from="15" to="11">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits from="10" to="1" encode="signed">
<BitsShortName>CAL</BitsShortName>
<BitsName>Calculated Doppler Speed</BitsName>
<BitsUnit>m/sec</BitsUnit>
</Bits>
</Fixed>
<Repetitive>
<Fixed length="7">
<Bits from="48" to="33">
<BitsShortName>DOP</BitsShortName>
<BitsName>Doppler speed</BitsName>
<BitsUnit scale="1">m/sec</BitsUnit>
</Bits>
<Bits from="32" to="17">
<BitsShortName>AMB</BitsShortName>
<BitsName>Ambiguity</BitsName>
<BitsUnit scale="1">m/sec</BitsUnit>
</Bits>
<Bits from="16" to="1">
<BitsShortName>FRQ</BitsShortName>
<BitsName>Transmitted Frequency</BitsName>
<BitsUnit scale="1">MHz</BitsUnit>
</Bits>
</Fixed>
</Repetitive>
</Compound>
</DataItemFormat>
<DataItemNote />
</DataItem>
<DataItem id="130">
<DataItemName>Radar Plot Characteristics</DataItemName>
<DataItemDefinition>Additional information on the quality of the target report</DataItemDefinition>
<DataItemFormat desc="Compound Data Item">
<Compound>
<Variable>
<Fixed length="1">
<Bits bit="8">
<BitsShortName>SRLP</BitsShortName>
<BitsName>SRL Presence</BitsName>
<BitsPresence>1</BitsPresence>
</Bits>
<Bits bit="7">
<BitsShortName>SRRP</BitsShortName>
<BitsName>SRR Presence</BitsName>
<BitsPresence>2</BitsPresence>
</Bits>
<Bits bit="6">
<BitsShortName>SAMP</BitsShortName>
<BitsName>SAM Presence</BitsName>
<BitsPresence>3</BitsPresence>
</Bits>
<Bits bit="5">
<BitsShortName>PRLP</BitsShortName>
<BitsName>PRL Presence</BitsName>
<BitsPresence>4</BitsPresence>
</Bits>
<Bits bit="4">
<BitsShortName>PAMP</BitsShortName>
<BitsName>PAM Presence</BitsName>
<BitsPresence>5</BitsPresence>
</Bits>
<Bits bit="3">
<BitsShortName>RPDP</BitsShortName>
<BitsName>RPD Presence</BitsName>
<BitsPresence>6</BitsPresence>
</Bits>
<Bits bit="2">
<BitsShortName>APDP</BitsShortName>
<BitsName>APD Presence</BitsName>
<BitsPresence>7</BitsPresence>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into next extent</BitsValue>
</Bits>
</Fixed>
</Variable>
<Fixed length="1">
<Bits from="8" to="1">
<BitsShortName>SRL</BitsShortName>
<BitsName>SSR Plot Runlength</BitsName>
<BitsUnit scale="0.0439453125">deg</BitsUnit>
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1">
<BitsShortName>SRR</BitsShortName>
<BitsName>SSR-Number of received reply</BitsName>
<BitsUnit />
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1" encode="signed">
<BitsShortName>SAM</BitsShortName>
<BitsName>SSR-Reply amplitude</BitsName>
<BitsUnit scale="1">dBm</BitsUnit>
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1">
<BitsShortName>PRL</BitsShortName>
<BitsName>Primary Plot Runlength</BitsName>
<BitsUnit scale="0.0439453125">deg</BitsUnit>
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1" encode="signed">
<BitsShortName>PAM</BitsShortName>
<BitsName>Amplitude of Primary plot</BitsName>
<BitsUnit scale="1">dBm</BitsUnit>
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1" encode="signed">
<BitsShortName>RPD</BitsShortName>
<BitsName>Difference in Range between PSR and SSR plot</BitsName>
<BitsUnit scale="0.00390625">NM</BitsUnit>
</Bits>
</Fixed>
<Fixed length="1">
<Bits from="8" to="1" encode="signed">
<BitsShortName>APD</BitsShortName>
<BitsName>Difference in Azimuth between PSR and SSR plot</BitsName>
<BitsUnit scale="0.02197265625">deg</BitsUnit>
</Bits>
</Fixed>
</Compound>
</DataItemFormat>
<DataItemNote>This Data Item may contain parameters such as plot runlength (primary and secondary), difference between primary and secondary derived azimuth, pulse amplitude, etc.</DataItemNote>
</DataItem>
<DataItem id="140">
<DataItemName>Time Of Day</DataItemName>
<DataItemDefinition>Absolute time stamping of the information provided in the track message, in the form of elapsed time since last midnight, expressed as UTC.</DataItemDefinition>
<DataItemFormat>
<Fixed length="3">
<Bits from="24" to="1">
<BitsShortName>ToD</BitsShortName>
<BitsName>Time Of Day</BitsName>
<BitsUnit scale="0.0078125">s</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>zero at every midnight.</DataItemNote>
</DataItem>
<DataItem id="161">
<DataItemName>Track Number</DataItemName>
<DataItemDefinition>An integer value representing a unique reference to a track record within a particular track/plot file.</DataItemDefinition>
<DataItemFormat desc="Two-octet fixed length Data Item.">
<Fixed length="2">
<Bits from="12" to="1">
<BitsShortName>Tn</BitsShortName>
<BitsName>Track Number</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote />
</DataItem>
<DataItem id="170">
<DataItemName>Track Status</DataItemName>
<DataItemDefinition>Status of monoradar track derived either from primary and/or secondary radar information.</DataItemDefinition>
<DataItemFormat desc="Variable length Data Item comprising a first part of one octet, followed by one-octet extents as necessary.">
<Variable>
<Fixed length="1">
<Bits bit="8">
<BitsShortName>CNF</BitsShortName>
<BitsName>CNF</BitsName>
<BitsValue val="0">Confirmed Track</BitsValue>
<BitsValue val="1">Tentative Track</BitsValue>
</Bits>
<Bits from="7" to="6">
<BitsShortName>RAD</BitsShortName>
<BitsName>RAD</BitsName>
<BitsValue val="0">Combined Track</BitsValue>
<BitsValue val="1">PSR Track</BitsValue>
<BitsValue val="2">SSR/ModeS Track</BitsValue>
<BitsValue val="3">Invalid</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>DOU</BitsShortName>
<BitsName>DOU</BitsName>
<BitsValue val="0">Normal confidence</BitsValue>
<BitsValue val="1">Low confidence in plot to track association</BitsValue>
</Bits>
<Bits bit="4">
<BitsShortName>MAH</BitsShortName>
<BitsName>MAH</BitsName>
<BitsValue val="0">No horizontal man. sensed</BitsValue>
<BitsValue val="1">Horizontal manoeuvring sensed</BitsValue>
</Bits>
<Bits from="3" to="2">
<BitsShortName>CDM</BitsShortName>
<BitsName>CDM</BitsName>
<BitsValue val="0">Maintaining</BitsValue>
<BitsValue val="1">Climbing</BitsValue>
<BitsValue val="2">Descending</BitsValue>
<BitsValue val="3">Invalid</BitsValue>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into first extent</BitsValue>
</Bits>
</Fixed>
<Fixed length="1">
<Bits bit="8">
<BitsShortName>TRE</BitsShortName>
<BitsName>TRE</BitsName>
<BitsValue val="0">Track still alive</BitsValue>
<BitsValue val="1">Last report for a track</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>GHO</BitsShortName>
<BitsName>GHO</BitsName>
<BitsValue val="0">True target track</BitsValue>
<BitsValue val="1">Ghost target track</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>SUP</BitsShortName>
<BitsName>SUP</BitsName>
<BitsValue val="0">Track from cluster network - NO</BitsValue>
<BitsValue val="1">Track from cluster network - YES</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>TCC</BitsShortName>
<BitsName>TCC</BitsName>
<BitsValue val="0">Radar plane</BitsValue>
<BitsValue val="1">Slant range correction</BitsValue>
</Bits>
<Bits from="4" to="2">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bits set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="1" fx="1">
<BitsShortName>FX</BitsShortName>
<BitsName>FX</BitsName>
<BitsValue val="0">End of Data Item</BitsValue>
<BitsValue val="1">Extension into second extent</BitsValue>
</Bits>
</Fixed>
</Variable>
</DataItemFormat>
<DataItemNote>.</DataItemNote>
</DataItem>
<DataItem id="200">
<DataItemName>Calculated Track Velocity in Polar Coordinates</DataItemName>
<DataItemDefinition>Calculated track velocity expressed in polar coordinates.</DataItemDefinition>
<DataItemFormat desc="Four-octet fixed length Data Item.">
<Fixed length="4">
<Bits from="32" to="17">
<BitsShortName>CGS</BitsShortName>
<BitsName>Calculated groundspeed</BitsName>
<BitsUnit scale="0.22">kt</BitsUnit>
</Bits>
<Bits from="16" to="1">
<BitsShortName>CHdg</BitsShortName>
<BitsName>Calculated heading</BitsName>
<BitsUnit scale="0.0054931640625">deg</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
</DataItem>
<DataItem id="210">
<DataItemName>Track Quality</DataItemName>
<DataItemDefinition>Track Quality in the form of a vector of standard deviations.</DataItemDefinition>
<DataItemFormat desc="Four-octet fixed length Data Item.">
<Fixed length="4">
<Bits from="32" to="25">
<BitsShortName>SigmaX</BitsShortName>
<BitsName>SigmaX</BitsName>
<BitsUnit scale="0.0078125">NM</BitsUnit>
</Bits>
<Bits from="24" to="17">
<BitsShortName>SigmaY</BitsShortName>
<BitsName>SigmaY</BitsName>
<BitsUnit scale="0.0078125">NM</BitsUnit>
</Bits>
<Bits from="16" to="9">
<BitsShortName>SigmaV</BitsShortName>
<BitsName>Sigma Groundspeed</BitsName>
<BitsUnit scale="0.22">Kt</BitsUnit>
</Bits>
<Bits from="8" to="1">
<BitsShortName>SigmaH</BitsShortName>
<BitsName>Sigma Heading</BitsName>
<BitsUnit scale="0.087890625">deg</BitsUnit>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>.</DataItemNote>
</DataItem>
<DataItem id="220">
<DataItemName>Aircraft Address</DataItemName>
<DataItemDefinition>24-bits Mode S address</DataItemDefinition>
<DataItemFormat>
<Fixed length="3">
<Bits from="24" to="1" encode="hex">
<BitsShortName>ACAddr</BitsShortName>
<BitsName>AircraftAddress</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
</DataItem>
<DataItem id="230">
<DataItemName>Comm capability</DataItemName>
<DataItemDefinition>Communication-ACAS Capability and Flight Status</DataItemDefinition>
<DataItemFormat>
<Fixed length="2">
<Bits from="16" to="14">
<BitsShortName>COM</BitsShortName>
<BitsName>COM</BitsName>
</Bits>
<Bits from="13" to="11">
<BitsShortName>STAT</BitsShortName>
<BitsName>STAT</BitsName>
</Bits>
<Bits from="10" to="9">
<BitsShortName>spare</BitsShortName>
<BitsName>spare bit set to 0</BitsName>
<BitsConst>0</BitsConst>
</Bits>
<Bits bit="8">
<BitsShortName>ModeSSSC</BitsShortName>
<BitsName>ModeS Specific Service Capability</BitsName>
<BitsValue val="0">No</BitsValue>
<BitsValue val="1">Yes</BitsValue>
</Bits>
<Bits bit="7">
<BitsShortName>ARC</BitsShortName>
<BitsName>Altitude reporting capability</BitsName>
<BitsValue val="0">100ft resolution</BitsValue>
<BitsValue val="1">25ft resolution</BitsValue>
</Bits>
<Bits bit="6">
<BitsShortName>AIC</BitsShortName>
<BitsName>Aircraft identification capability</BitsName>
<BitsValue val="0">No</BitsValue>
<BitsValue val="1">Yes</BitsValue>
</Bits>
<Bits bit="5">
<BitsShortName>BDS16</BitsShortName>
<BitsName>BDS 1,0 bit 16</BitsName>
</Bits>
<Bits from="4" to="1">
<BitsShortName>BDS37</BitsShortName>
<BitsName>BDS 1,0 bits 37/40</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
</DataItem>
<DataItem id="240">
<DataItemName>Aircraft Identification</DataItemName>
<DataItemDefinition>Target (aircraft or vehicle) identification in 8 characters.</DataItemDefinition>
<DataItemFormat desc="Six-octet fixed length Data Item.">
<Fixed length="6">
<Bits from="1" to="48" encode="6bitschar">
<BitsShortName>TId</BitsShortName>
<BitsName>Characters 1-8 (coded on 6 bits each) defining target identification</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote>.</DataItemNote>
</DataItem>
<DataItem id="250">
<DataItemName>Mode S Comm B data</DataItemName>
<DataItemDefinition>Mode S Comm B data extracted from the aircraft transponder</DataItemDefinition>
<DataItemFormat desc="BDS">
<BDS />
</DataItemFormat>
<DataItemNote />
</DataItem>
<DataItem id="260">
<DataItemName>ACAS Resolution Advisory Report</DataItemName>
<DataItemDefinition>RA</DataItemDefinition>
<DataItemFormat desc="Seven-octet fixed length Data Item">
<Fixed length="7">
<Bits from="56" to="1" encode="hex">
<BitsShortName>MBdata</BitsShortName>
<BitsName>BDS 3,0</BitsName>
</Bits>
</Fixed>
</DataItemFormat>
<DataItemNote />
</DataItem>
<!--Special Purpose Field - content unknown -->
<DataItem id="SP">
<DataItemName>Special Purpose Field</DataItemName>
<DataItemDefinition>SP</DataItemDefinition>
<DataItemFormat desc="Explicit">
<Explicit>
<Fixed length="1">
<Bits from="8" to="1">
<BitsShortName>SP</BitsShortName>
<BitsName>SP</BitsName>
</Bits>
</Fixed>
</Explicit>
</DataItemFormat>
<DataItemNote />
</DataItem>
<!--Transmission of Track-->
<UAP>
<UAPItem bit="0" frn="1" len="2">010</UAPItem>
<UAPItem bit="1" frn="2" len="3">140</UAPItem>
<UAPItem bit="2" frn="3" len="1+">020</UAPItem>
<UAPItem bit="3" frn="4" len="4">040</UAPItem>
<UAPItem bit="4" frn="5" len="2">070</UAPItem>
<UAPItem bit="5" frn="6" len="2">090</UAPItem>
<UAPItem bit="6" frn="7" len="1+1+">130</UAPItem>
<UAPItem bit="7" frn="FX" len="-">-</UAPItem>
<UAPItem bit="8" frn="8" len="3">220</UAPItem>
<UAPItem bit="9" frn="9" len="6">240</UAPItem>
<UAPItem bit="10" frn="10" len="1+">250</UAPItem>
<UAPItem bit="11" frn="11" len="2">161</UAPItem>
<UAPItem bit="12" frn="12" len="4">042</UAPItem>
<UAPItem bit="13" frn="13" len="4">200</UAPItem>
<UAPItem bit="14" frn="14" len="1+">170</UAPItem>
<UAPItem bit="15" frn="FX" len="-">-</UAPItem>
<UAPItem bit="16" frn="15" len="4">210</UAPItem>
<UAPItem bit="17" frn="16" len="1+">030</UAPItem>
<UAPItem bit="18" frn="17" len="2">080</UAPItem>
<UAPItem bit="19" frn="18" len="4">100</UAPItem>
<UAPItem bit="20" frn="19" len="2">110</UAPItem>
<UAPItem bit="21" frn="20" len="1+">120</UAPItem>
<UAPItem bit="22" frn="21" len="2">230</UAPItem>
<UAPItem bit="23" frn="FX" len="-">-</UAPItem>
<UAPItem bit="24" frn="22" len="7">260</UAPItem>
<UAPItem bit="25" frn="23" len="1">055</UAPItem>
<UAPItem bit="26" frn="24" len="2">050</UAPItem>
<UAPItem bit="27" frn="25" len="1">065</UAPItem>
<UAPItem bit="28" frn="26" len="2">060</UAPItem>
<UAPItem bit="29" frn="27" len="1+1+">SP</UAPItem>
<UAPItem bit="30" frn="28" len="1+1+">RE</UAPItem>
<UAPItem bit="31" frn="FX" len="-">-</UAPItem>
</UAP>
</Category>
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