HpeGnss.xid.xml
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<?xml version="1.0" encoding="UTF-8" ?>
<specification xmlns="https://xid.location.studio/schema/V1.0.0/XtensibleInterfaceDefinition.xsd"
xmlns:xid="https://xid.location.studio/schema/V1.0.0/XtensibleInterfaceDefinition.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://xid.location.studio/schema/V1.0.0/XtensibleInterfaceDefinition.xsd https://xid.location.studio/schema/V1.0.0/XtensibleInterfaceDefinition.xsd"
identity="HpeGnss.xid.xml">
<title>HPE GNSS Data Definition</title>
<comment>File contains data definitions for GNSS HPE location related datatypes.</comment>
<import ref="https://xid.location.studio/Tensor/V1.0.0/Definitions.xid.xml" local="Definitions.xid.xml" />
<import ref="https://xid.location.studio/HPE/V1.1.1/HpeCore.xid.xml" local="HpeCore.xid.xml" />
<namespace name="HPE.Gnss">
<using namespace="Tensor"/>
<using namespace="HPE"/>
<enum name="Constellation" type="uint8" default="unspecified">
<comment>
Specifies the specific GNSS constellation. These are oreable values to
be used as flags.
</comment>
<literal name="unspecified" value="0x00"/>
<literal name="GPS" value="0x01"/>
<literal name="GLONASS" value="0x02"/>
<literal name="GALILEO" value="0x03"/>
<literal name="BEIDOU" value="0x04"/>
<literal name="QZSS" value="0x05"/>
<literal name="MBS_FLAG" value="0x20"/>
<literal name="RTLS_FLAG" value="0x40"/>
</enum>
<enum name="AssistanceData" type="uint8" default="unspecified">
<comment>
Enumeration literals defining the types of assistance data supported.
</comment>
<literal name="unspecified" value="0x00"/>
<literal name="GpsAlmanac" value="0x01"/>
<literal name="GpsEphemeris" value="0x02"/>
<literal name="GpsUtcParameters" value="0x03"/>
<literal name="GpsIonosphericCorrection" value="0x04"/>
<literal name="AcquisitionAssistance" value="0x05"/>
</enum>
<!-- Satellite ID -->
<struct name="SatelliteId" pack="true">
<comment>Satellite identifier specifies constellation and satellite identifier.</comment>
<elem name ="constellation" type="Constellation" multiplicity="1"/>
<elem name ="id" type="uint8" multiplicity="1">
<comment>Satellite identifier: range 0 to 63.</comment>
</elem>
</struct>
<!--
*******************************************************
Almanac Data Structures
*******************************************************
-->
<!-- Almanac -->
<struct name="Almanac" pack="true">
<comment>Generalized Almanac orbit in GPS reference frame. One record per satellite.</comment>
<elem name ="id" type="uint8" multiplicity="1">
<comment>Satellite identifier, valid range is 0-63.</comment>
</elem>
<elem name ="toa" type="uint8" multiplicity="1">
<comment>Time of almanac in seconds. Value is integer encoded with scale factor 2^12</comment>
<tag name="unit" value="2^12 seconds"/>
</elem>
<elem name ="deltai0" type="int16" multiplicity="1">
<comment>Relative inclination to i0 = 0.3 semi-circles at reference time. Value is integer encoded with scale factor 2^-19</comment>
<tag name="unit" value="2^-19 semi-circles"/>
</elem>
<elem name ="OmegaDot" type="int16" multiplicity="1">
<comment>Rate of Right Ascension in semi-circles/sec. Value is integer encoded with scale factor 2^-38</comment>
<tag name="unit" value="2^-38 seconds"/>
</elem>
<elem name ="af0" type="int16" multiplicity="1">
<comment>SV clock bias in seconds. Value is integer encoded with scale factor 2^-20</comment>
<tag name="unit" value="2^-20 seconds"/>
</elem>
<elem name ="af1" type="int16" multiplicity="1">
<comment>SV clock bias rate in seconds/second. Value is integer encoded with scale factor 2^-38</comment>
<tag name="unit" value="2^-38 seconds"/>
</elem>
<elem name ="eccentricity" type="uint16" multiplicity="1">
<comment>Eccentricity of the orbit. Value is integer encoded with scale factor 2^-21</comment>
<tag name="unit" value="2^-21"/>
</elem>
<elem name ="sqrtA" type="uint24" multiplicity="1">
<comment>Square root of Mean anomaly. Value is integer encoded with scale factor 2^-11</comment>
<tag name="unit" value="2^-11 meters^1/2"/>
</elem>
<elem name ="Omega0" type="int24" multiplicity="1">
<comment>Longitude of ascending node in semi-circles. Value is integer encoded with scale factor 2^-23</comment>
<tag name="unit" value="2^-23 semi-circles"/>
</elem>
<elem name ="omega" type="int24" multiplicity="1">
<comment>omega argument of perigee in semi-circles. Value is integer encoded with scale factor 2^-23</comment>
<tag name="unit" value="2^-23 semi-circles"/>
</elem>
<elem name ="M0" type="int24" multiplicity="1">
<comment>Mean anomaly at reference time in semi-circles. Value is integer encoded with scale factor 2^-23</comment>
<tag name="unit" value="2^-23 semi-circles"/>
</elem>
<elem name ="SvHealth" type="uint8" multiplicity="1">
<comment>Satellite health flags.</comment>
</elem>
</struct>
<!-- Ephemeris -->
<struct name="Ephemeris" pack="true">
<comment>Generalized GPS 15 element precision Keplerian orbit in GPS reference frame. One record per satellite.</comment>
<elem name ="id" type="uint8" multiplicity="1">
<comment>Satellite identifier, valid range is 0-63.</comment>
</elem>
<elem name ="toe" type="uint16" multiplicity="1">
<comment>Time of Ephemeris. Value is integer encoded with scale factor 2^4</comment>
<tag name="unit" value="2^4 seconds"/>
</elem>
<elem name ="iode" type="uint8" multiplicity="1">
<comment>Issue of data Ephemeris. The value for comparison with the 8 LSBs of the IODC</comment>
</elem>
<elem name ="eccentricity" type="uint32" multiplicity="1">
<comment>Eccentricity of the orbit. Value is integer encoded with scale factor 2^-33</comment>
<tag name="unit" value="2^-33"/>
</elem>
<elem name ="i0" type="int32" multiplicity="1">
<comment>Inclination at reference time in semi-circles. Value is integer encoded with scale factor 2^-31</comment>
<tag name="unit" value="2^-31 semi-circles"/>
</elem>
<elem name ="OmegaDot" type="int24" multiplicity="1">
<comment>Rate of Right Ascension in semi-circles/sec. Value is integer encoded with scale factor 2^-43</comment>
<tag name="unit" value="2^-43 seconds"/>
</elem>
<elem name ="sqrtA" type="uint32" multiplicity="1">
<comment>Square root of Mean anomaly. Value is integer encoded with scale factor 2^-19</comment>
<tag name="unit" value="2^-19 meters^1/2"/>
</elem>
<elem name ="Omega0" type="int32" multiplicity="1">
<comment>Longitude of ascending node in semi-circles. Value is integer encoded with scale factor 2^-31</comment>
<tag name="unit" value="2^-31 semi-circles"/>
</elem>
<elem name ="omega" type="int32" multiplicity="1">
<comment>omega argument of perigee in semi-circles. Value is integer encoded with scale factor 2^-31</comment>
<tag name="unit" value="2^-31 semi-circles"/>
</elem>
<elem name ="M0" type="int32" multiplicity="1">
<comment>Mean anomaly at reference time in semi-circles. Value is integer encoded with scale factor 2^-31</comment>
<tag name="unit" value="2^-31 semi-circles"/>
</elem>
<elem name ="deltan" type="int16" multiplicity="1">
<comment>Mean Motion Difference From Computed Value in semi-circles/sec. Value is integer encoded with scale factor 2^-43</comment>
<tag name="unit" value="2^-43 semi-circles"/>
</elem>
<elem name ="idot" type="int16" multiplicity="1">
<comment>Rate of Inclination in semi-circles/sec. Value is integer encoded with scale factor 2^-43</comment>
<tag name="unit" value="2^-43 semi-circles"/>
</elem>
<elem name ="Cis" type="int16" multiplicity="1">
<comment>Amp. Sin Correction of Inclination in radians. Value is integer encoded with scale factor 2^-29</comment>
<tag name="unit" value="2^-29 radians"/>
</elem>
<elem name ="Cic" type="int16" multiplicity="1">
<comment>Amp. Cosine Correction of Inclination in radians. Value is integer encoded with scale factor 2^-29</comment>
<tag name="unit" value="2^-29 radians"/>
</elem>
<elem name ="Crs" type="int16" multiplicity="1">
<comment>Amp. Sin Correction of orbit radius in meters. Value is integer encoded with scale factor 2^-5</comment>
<tag name="unit" value="2^-5 meters"/>
</elem>
<elem name ="Crc" type="int16" multiplicity="1">
<comment>Amp. Cosine Correction of orbit radius in meters. Value is integer encoded with scale factor 2^-5</comment>
<tag name="unit" value="2^-5 meters"/>
</elem>
<elem name ="Cus" type="int16" multiplicity="1">
<comment>Amp. Sin Correction of Latitude in radians. Value is integer encoded with scale factor 2^-29</comment>
<tag name="unit" value="2^-29 radians"/>
</elem>
<elem name ="Cuc" type="int16" multiplicity="1">
<comment>Amp. Cosine Correction of Latitude in radians. Value is integer encoded with scale factor 2^-29</comment>
<tag name="unit" value="2^-29 radians"/>
</elem>
<elem name ="toc" type="uint16" multiplicity="1">
<comment>Time of clock. Value is integer encoded with scale factor 2^4</comment>
<tag name="unit" value="2^4 seconds"/>
</elem>
<elem name ="iodc" type="uint16" multiplicity="1">
<comment>Issue of data Clock. </comment>
<tag name="unit" value="discretes"/>
</elem>
<elem name ="af0" type="int24" multiplicity="1">
<comment>SV clock bias in seconds. Value is integer encoded with scale factor 2^-31.</comment>
<tag name="unit" value="2^-31 seconds"/>
</elem>
<elem name ="af1" type="int16" multiplicity="1">
<comment>SV clock bias rate in seconds/second. Value is integer encoded with scale factor 2^-43.</comment>
<tag name="unit" value="2^-43 seconds"/>
</elem>
<elem name ="af2" type="int8" multiplicity="1">
<comment>SV clock bias rate in seconds/second^2. Value is integer encoded with scale factor 2^-55.</comment>
<tag name="unit" value="2^-55 seconds"/>
</elem>
<elem name ="TGD" type="int8" multiplicity="1">
<comment>L1-L2 group delay differential in seconds. Value is integer encoded with a scale factor 2^-31.</comment>
<tag name="unit" value="2^-31 seconds"/>
</elem>
<elem name ="SvHealth" type="uint8" multiplicity="1">
<comment>Satellite health flags.</comment>
</elem>
</struct>
<!-- UTC Parameters -->
<struct name="UtcParameters" pack="true">
<comment>Conversion data between GPS time and UTC.</comment>
<elem name ="a0" type="int32" multiplicity="1">
<comment>Constant term of the polynomial in seconds. Value is integer encoded with scale factor 2^-30.</comment>
<tag name="unit" value="2^-30 seconds"/>
</elem>
<elem name ="a1" type="int24" multiplicity="1">
<comment>First order term of the polynomial in seconds/second. Value is integer encoded with scale factor 2^-50.</comment>
<tag name="unit" value="2^-50 seconds"/>
</elem>
<elem name ="DeltaTls" type="int8" multiplicity="1">
<comment>Delta time due to Leap Seconds. </comment>
<tag name="unit" value="seconds"/>
</elem>
<elem name ="tot" type="uint8" multiplicity="1">
<comment>Time of Utc Data. Value is integer encoded with scale factor 2^12</comment>
<tag name="unit" value="2^12 seconds"/>
</elem>
<elem name ="WNt" type="uint8" multiplicity="1">
<comment>UTC Reference Week Number in weeks</comment>
<tag name="unit" value="weeks"/>
</elem>
<elem name ="WNlsf" type="uint8" multiplicity="1">
<comment>Week Number LeapSecond Future in weeks</comment>
<tag name="unit" value="weeks"/>
</elem>
<elem name ="DN" type="uint8" multiplicity="1">
<comment>Day number in days</comment>
<tag name="unit" value="days"/>
</elem>
<elem name ="DeltaTlsf" type="int8" multiplicity="1">
<comment>Delta time due to Leap Seconds Future</comment>
<tag name="unit" value="seconds"/>
</elem>
</struct>
<!-- Ionosperhic Correction -->
<struct name="IonosphericCorrection" pack="true">
<comment>Klobuchar Ionospheric Correction model parameters. See ICD200 para. 20.3.3.5.2.5</comment>
<elem name ="a0" type="int8" multiplicity="1">
<comment>alpha0 term of the polynomial in seconds. Value is integer encoded with scale factor 2^-30.</comment>
<tag name="unit" value="2^-30 seconds"/>
</elem>
<elem name ="a1" type="int8" multiplicity="1">
<comment>alpha1 term of the polynomial in seconds. Value is integer encoded with scale factor 2^-27.</comment>
<tag name="unit" value="2^-27 seconds"/>
</elem>
<elem name ="a2" type="int8" multiplicity="1">
<comment>alpha2 term of the polynomial in seconds. Value is integer encoded with scale factor 2^-24.</comment>
<tag name="unit" value="2^-24 seconds"/>
</elem>
<elem name ="a3" type="int8" multiplicity="1">
<comment>alpha3 term of the polynomial in seconds. Value is integer encoded with scale factor 2^-24.</comment>
<tag name="unit" value="2^-24 seconds"/>
</elem>
<elem name ="b0" type="int8" multiplicity="1">
<comment>beta0 term of the polynomial in seconds. Value is integer encoded with scale factor 2^11.</comment>
<tag name="unit" value="2^11 seconds"/>
</elem>
<elem name ="b1" type="int8" multiplicity="1">
<comment>beta1 term of the polynomial in seconds. Value is integer encoded with scale factor 2^14.</comment>
<tag name="unit" value="2^14 seconds"/>
</elem>
<elem name ="b2" type="int8" multiplicity="1">
<comment>beta2 term of the polynomial in seconds. Value is integer encoded with scale factor 2^16.</comment>
<tag name="unit" value="2^16 seconds"/>
</elem>
<elem name ="b3" type="int8" multiplicity="1">
<comment>beta3 term of the polynomial in seconds. Value is integer encoded with scale factor 2^16.</comment>
<tag name="unit" value="2^16 seconds"/>
</elem>
</struct>
<!-- ConstellationData -->
<struct name="ConstellationData">
<comment>Grouping of constellation data. Reference frame is GPS.</comment>
<comment>Will be extended to include other constellation data.</comment>
<!-- this has been embedded in a device, Only add. -->
<array name="AlmanacArray" type="Almanac"/>
<array name="EphemerisArray" type="Ephemeris" />
<elem name ="constellation" type="Constellation" multiplicity="1" ord="64"/>
<elem name ="week" type="uint16" multiplicity="1" ord="65"/>
<elem name ="almanacs" type="AlmanacArray" multiplicity="0..1" ord="66"/>
<!-- the following are are decoded in C decoding API yet -->
<elem name ="ephemeris" type="EphemerisArray" multiplicity="0..1" ord="67"/>
<elem name ="utc" type="UtcParameters" multiplicity="0..1" ord="68"/>
<elem name ="iono" type="IonosphericCorrection" multiplicity="0..1" ord="69" />
</struct>
<struct name="ConstellationSet">
<comment>Set of ConstellationData</comment>
<elem name ="constellationData" type="ConstellationData" multiplicity="0..*" ord="64"/>
</struct>
<!--
*******************************************************
Acquisistion Assistance Data
*******************************************************
-->
<!-- AcqAssistElem -->
<struct name="AcqAssistElem" pack="true">
<comment>Acquisistion assistance for a single satellite.</comment>
<elem name ="id" type="SatelliteId" multiplicity="1"/>
<elem name ="doppler0" type="int16" multiplicity="1">
<comment>Doppler 0th order term. Value is integer encoded with scale factor 2^-21</comment>
<tag name="unit" value="2^-21"/>
</elem>
<elem name ="doppler1" type="int16" multiplicity="1">
<comment>doppler first order term in Hz/sec. Value is integer encoded with scale factor 2^12</comment>
<tag name="unit" value="2^12 seconds"/>
</elem>
<elem name ="codephase" type="uint16" multiplicity="1">
<comment>code phase 0-1022 in 1/8 code chips. Value is integer encoded with scale factor 2^-3</comment>
<tag name="unit" value="2^-3 code chips"/>
</elem>
<elem name ="CodeCount" type="uint16" multiplicity="1">
<comment>Integer count of whole code epochs including the GPS bit number range 0 - 80 counts. </comment>
<tag name="unit" value="code epochs"/>
</elem>
<elem name ="searchWindow" type="uint8" multiplicity="1">
<comment>Rate of right ascension in semi-circles/sec. Value is integer encoded with scale factor 2^-38</comment>
<tag name="unit" value="2^-38 seconds"/>
</elem>
<elem name ="azimuth" type="int8" multiplicity="1">
<comment>Azimuth in degrees. Value is a scaled integer encoded with scale factor 2.5</comment>
<tag name="unit" value="2.5 degrees"/>
</elem>
<elem name ="elevation" type="int8" multiplicity="1">
<comment>Elevation in degrees.</comment>
<tag name="unit" value="degrees"/>
</elem>
</struct>
<!-- AcqAssistSet -->
<struct name="AcqAssistSet">
<comment>A set of doppler acquisition assistance elements</comment>
<elem name="data" type="AcqAssistElem" multiplicity="1..*" polymorphic="false"/>
</struct>
<!--
*******************************************************
GNSS Measurement data
*******************************************************
-->
<!-- CodephaseMeasurementMin-->
<struct name="CodephaseMeasurementMin" pack="true">
<comment>
Measurement of a single satellite codephase. This is a more compact version without RMS error and multipath indicator.
These will be encoded in cno in a future version.
</comment>
<elem name ="id" type="uint8" multiplicity="1">
<comment>
Satellite identifier: 0 - 63. If set to 255 (0xff), the measurement is considered invalid and ignored.
This marks the end of measurements in fixed array sets. See GpsCodePhaseObsMin6 for an example.
</comment>
</elem>
<elem name ="cn0" type="uint8" multiplicity="1">
<comment>Carrier noise ratio.</comment>
<tag name="unit" value="ratio"/>
</elem>
<elem name ="doppler" type="int16" multiplicity="1">
<comment>Measured Doppler shift in Hz. Value is integer encoded with scale factor 0.2</comment>
<tag name="unit" value="0.2 Hz"/>
</elem>
<elem name ="codephase" type="uint24" multiplicity="1">
<comment>Whole and fractional parts of code phase. Value is integer encoded with scale factor 2^-10</comment>
<tag name="unit" value="2^-10 code chips"/>
</elem>
</struct>
<!-- CodephaseMeasurement -->
<struct name="CodephaseMeasurement" type="CodephaseMeasurementMin" pack="true">
<comment>Measurement of a single satellite codephase including mpathIndicator and rmsErr.</comment>
<elem name ="mpathIndicator" type="uint8" multiplicity="1">
<comment>Multipath indicator. Default value is 0.</comment>
</elem>
<elem name ="rmsErr" type="uint8" multiplicity="1">
<comment>Pseudo range RMS Error value indexed 0..63, default is 0</comment>
<tag name="unit" value="2.5 degrees"/>
</elem>
</struct>
<!-- Observation Data types-->
<struct name="GpsCodePhaseObs8" type="ObservationEpoch" pack="true" rttkey="HPE.ObservationType.GPS_CODEPHASE_8">
<comment>
Eight standard GPS code phase measurements: 9 + (9 x 8) = 81 bytes. Mark
the end of the unused or invalid measurements with id=255 (0xFF). They will be ignored.
</comment>
<array name ="CodephaseMeasurement8" type="CodephaseMeasurement" size="8"/>
<elem name ="measurements" type="CodephaseMeasurement8" multiplicity="1">
</elem>
</struct>
<struct name="GpsCodePhaseObsMin6" type="ObservationEpoch" pack="true" rttkey="HPE.ObservationType.GPS_CODEPHASE_MIN6">
<comment>
Six minimum size GPS code phase measurements: 9 + (7 x 6) = 51 bytes.
Mark the end of the unused or invalid measurements with id=255 (0xFF). They will be ignored.
</comment>
<array name ="CodephaseMeasurementMin6" type="CodephaseMeasurementMin" size="6"/>
<elem name ="measurements" type="CodephaseMeasurementMin6" multiplicity="1">
</elem>
</struct>
<struct name="GpsCodePhaseObsMin8" type="ObservationEpoch" pack="true" rttkey="HPE.ObservationType.GPS_CODEPHASE_MIN8">
<comment>
Eight minimum size GPS code phase measurements: 9 + (7 x 8) = 65 bytes.
Mark the end of the unused or invalid measurements with id=255 (0xFF). They will be ignored.
</comment>
<array name ="CodephaseMeasurementMin8" type="CodephaseMeasurementMin" size="8"/>
<elem name ="measurements" type="CodephaseMeasurementMin8" multiplicity="1">
</elem>
</struct>
<struct name="PseudorangeObservation" type="ObservationEpoch" rttkey="HPE.ObservationType.GNSS_PSEUDORANGE">
<comment>GNSS observation data in generic format suited for variable sized input.</comment>
<elem name ="id" type="SatelliteId" multiplicity="1"/>
<elem name ="prr" type="float64" multiplicity="1">
<comment>Pseudorange rate measurement in meters per second.</comment>
<tag name="unit" value="meters per second"/>
</elem>
<elem name ="pr" type="float64" multiplicity="1">
<comment>Pseudorange measurement in meters.</comment>
<tag name="unit" value="meters"/>
</elem>
<elem name ="prrUncert" type="float32" multiplicity="1">
<comment>Pseudorange rate measurement uncertainty in meters per second. This is the one standard deviation confidence (68%) uncertainty.</comment>
<tag name="unit" value="meters per second"/>
</elem>
<elem name ="prUncert" type="float32" multiplicity="1">
<comment>Pseudorange measurement uncertainty in meters. This is the one standard deviation confidence (68%) uncertainty.</comment>
<tag name="unit" value="meters"/>
</elem>
<elem name ="cn0" type="uint8" multiplicity="1">
<comment>Carrier noise ratio.</comment>
<tag name="unit" value="ratio"/>
</elem>
<elem name ="mpathIndicator" type="uint8" multiplicity="1">
<comment>Multipath indicator. Default value is 0.</comment>
</elem>
</struct>
</namespace>
</specification>