> ## Documentation Index
> Fetch the complete documentation index at: https://qualcomm-3.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# GnssSv

Specifies the GNSS SV report that comes when the client registers for `location_client::GnssSvCb`.

|           **Field**           |                                                       **Type**                                                      |                                                                                                                                                                                                                                                              **Description**                                                                                                                                                                                                                                                             |
| :---------------------------: | :-----------------------------------------------------------------------------------------------------------------: | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: |
|             `svId`            |                                                       `UINT16`                                                      | Unique SV identifier. This field is always valid. The SV range for supported constellations is as follows: <ul><li>For GPS: 1 to 32</li><li>For GLONASS: 65 to 96 or FCN+104</li><li>\[65, 96] if orbital slot number (OSN) is known.</li><li>\[97, 110] as frequency channel number (FCN) \[-7, 6] plus 104, that is, encode FCN -7 as 97, 0 as 104, 6 as 110.</li><li>For SBAS: 120 to 158 and 183 to 191</li><li>For QZSS: 193 to 197</li><li>For BDS: 201 to 263</li><li>For GAL: 301 to 336</li><li>For NavIC: 401 to 414</li></ul> |
|             `type`            |                                                     `GnssSvType`                                                    |                                                                                                                                                                                                                   Constellation type of the SV (GPS, SBAS, GLONASS, QZSS, BeiDou, Galileo). This field is always valid.                                                                                                                                                                                                                  |
|           `cN0Dbhz`           |                                                       `FLOAT`                                                       |                                                                                                                                                                                                      Carrier-to-noise ratio of the signal measured at the antenna, in dB Hz. `cN0Dbhz` of 0.0 indicates that this field is unknown.                                                                                                                                                                                                      |
|          `elevation`          |                                                       `FLOAT`                                                       |                                                                                                                                                                                                                                       Elevation of the SV, in degrees. This field is always valid.                                                                                                                                                                                                                                       |
|           `azimuth`           |                                                       `FLOAT`                                                       |                                                                                                                                                                                                                                        Azimuth of the SV, in degrees. This field is always valid.                                                                                                                                                                                                                                        |
|      `gnssSvOptionsMask`      |   [GnssSvOptionsMask](https://docs.qualcomm.com/doc/80-80023-25/topic/GnssSvOptionsMask.html#gnss-sv-options-mask)  |                                                                                                                                                                                                                        Specifies additional information and valid fields in `GnssSv`. This field is always valid.                                                                                                                                                                                                                        |
|      `carrierFrequencyHz`     |                                                       `FLOAT`                                                       |                                                                                                                                                                                                 Carrier frequency of the signal tracked. This field is valid if `gnssSvOptionsMask` has `GNSS_SV_OPTIONS_HAS_CARRIER_FREQUENCY_BIT` set.                                                                                                                                                                                                 |
|      `gnssSignalTypeMask`     | [GnssSignalTypeMask](https://docs.qualcomm.com/doc/80-80023-25/topic/GnssSignalTypeMask.html#gnss-signal-type-mask) |                                                                                                                                                                                                      GNSS signal type mask of the SV. This field is valid if `gnssSvOptionsMask` has `GNSS_SV_OPTIONS_HAS_GNSS_SIGNAL_TYPE_BIT` set.                                                                                                                                                                                                     |
| `basebandCarrier ToNoiseDbHz` |                                                       `DOUBLE`                                                      |                                                                                                                                                                               Carrier-to-noise ratio of the signal measured at baseband, in dB Hz. This field is valid if `gnssSvOptionsMask` has `GNSS_SV_OPTIONS_HAS_BASEBAND_CARRIER_TO_NOISE_BIT` set.                                                                                                                                                                               |
|         `gloFrequency`        |                                                       `UINT16`                                                      |                                                                                                                                                                                                                 GLONASS frequency channel number. The range is \[1, 14]. This field is valid only when SV is of GLONASS.                                                                                                                                                                                                                 |