HpeGnss.xid.xml 25.9 KB
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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/V1.2/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>
                GNSS constellation types.
            </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="AssistanceType" 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>