name: PCV
full_form: Phase Center Variation
context: SSR Orbit Corrections provides the GNSS receiver with parameters for orbit corrections in radial, along-track and cross-track components. These orbit corrections are used to compute a satellite position correction, to be combined with satellite position calculated from broadcast ephemeris (see clause 8.1.2.1.7). NOTE 1: The orbit corrections define an offset between the broadcast ephemeris orbit and a satellite antenna reference point (ARP) to which the other corrections refer. The exact definition of the reference point along the satellite antenna is implementation-defined by the Network and use of all corrections together shall yield a consistent solution. NOTE 2: The UE should not apply any additional corrections for the Satellite Antenna Phase Center (APC) such as Phase Center Offset (PCO) or Phase Center Variation (PCV), except when provided by the Network in which case the UE may optionally apply the additional PCV residuals contained in the SSR Satellite PCV Residuals
description: Phase Center Variation (PCV) is a parameter used to correct satellite position calculations, specifically related to the satellite antenna phase center. It is an implementation-defined aspect of orbit corrections provided by the Network.
explanation: The context explicitly mentions PCV as part of the SSR Satellite PCV Residuals, which are additional corrections that may be optionally applied by the UE when provided by the Network. This indicates that PCV is a specific parameter used in satellite positioning calculations.
section_title: 8.1.2.1.21SSR Orbit Corrections
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