Combined correction for satellite phase center offset (pco) and differential code bias (dcb)

A device comprising:

• one or more transceivers;
• one or more memories;
• and
• one or more processors communicatively coupled with the one or more transceivers and the one or more memories, the one or more processors configured to:
• obtain phase center offset (PCO) error correction data for a frequency band used by a global navigation satellite system (GNSS) satellite to transmit a GNSS signal received by a GNSS device;
• determine a PCO error correction approximation based at least in part on a difference between a Z-axis component, in a satellite body-fixed frame of the GNSS satellite, of the PCO error correction data and a Z-axis component, in the satellite body-fixed frame of the GNSS satellite, of a PCO reference point for a position of the GNSS satellite;
• determine a combined error correction value for PCO and differential code bias (DCB) error correction, the combined error correction value based at least in part on the PCO error correction approximation and DCB error correction data for the frequency band;
• and
• perform a positioning operation, using the combined error correction value, for determining a location of the GNSS device.

An apparatus for global navigation satellite system (GNSS) positioning of a GNSS device using error correction, the apparatus comprising:

• means for obtaining phase center offset (PCO) error correction data for a frequency band used by a GNSS satellite to transmit a GNSS signal received by the GNSS device;
• means for determining a PCO error correction approximation based at least in part on a difference between a Z-axis component, in a satellite body-fixed frame of the GNSS satellite, of the PCO error correction data and a Z-axis component, in the satellite body-fixed frame of the GNSS satellite, of a PCO reference point for a position of the GNSS satellite;
• means for determining a combined error correction value for PCO and differential code bias (DCB) error correction, the combined error correction value based at least in part on the PCO error correction approximation and DCB error correction data for the frequency band;
• and
• means for performing a positioning operation, using the combined error correction value, for determining a location of the GNSS device.