Patent ID: 9201147
Filing Date: 2015-12-01
Classification: G01S

Abstract:
1. A method of operating one or more processors each having associated data storage and program code to determine rover correction data, the method comprising: operating the one or more processors to process global navigation satellite system (GNSS) data derived from observations at multiple stations, located within a local region, of GNSS signals of multiple satellites over multiple epochs, wherein the GNSS signals have at least two carrier frequencies and the observations include code observations and carrier-phase observations, wherein the one or more processors use the observations to: operating the one or more processors to obtain at least one code bias for each of the multiple satellites; transmitting correction data to a rover located within the local region, the correction data comprising: the ionospheric delay over the local region, the tropospheric delay over the local region, the phase-leveled geometric correction for each of the multiple satellites, and the at least one code bias for each of the multiple satellites.