Navigation satellite system positioning involving the generation of receiver-specific or receiver-type-specific correction information

Method for generating correction information associated with a global or regional navigation satellite system (NSS) receiver, wherein the correction information comprises information for correcting pseudorange observations useful for determining a position of the NSS receiver, the correction information comprising estimated receiver code biases per satellite, the method comprising:

• receiving first NSS signals using an antenna of the NSS receiver, the first NSS signals comprising multiple frequencies over multiple epochs, the first NSS signals received from a plurality of NSS satellites;
• processing the first NSS signals using one or more processors of the NSS receiver to provide first raw observations;
• obtaining precise satellite information at the NSS receiver, the precise satellite information comprising:
• (i) an orbit position of each one of the plurality of NSS satellites,
• (ii) a clock offset of each one of the plurality of NSS satellites, and
• (iii) a set of biases associated with each one of the plurality of NSS satellites, or
• information derived from the precise satellite information;
• estimating ambiguities in the carrier phase of the first raw observations using the one or more processors of the NSS receiver, the estimated ambiguities determined based on the precise satellite information or the information derived from the precise satellite information;
• computing combination values using the one or more processors of the NSS receiver to provide an observation equation system, the computed combination values determined based on the first raw observations together with the estimated ambiguities, the computed combination values canceling out effects of satellite motion relative to the NSS receiver, effects of satellite clocks, effects of the troposphere, and effects of the ionosphere;
• generating the correction information per satellite using the one or more processors of the NSS receiver, the correction information per satellite generated by solving the observation equation system of the computed combination values to estimate the receiver code biases per satellite;
• thereafter
• receiving second NSS signals using the antenna of the NSS receiver;
• processing the second NSS signals using the one or more processors of the NSS receiver to provide second raw observations;
• correcting the second raw observations using the one or more processors of the NSS receiver to provide corrected observations, the second raw observations corrected using at least a portion of the estimated receiver code biases;
• and
• determining the position of the NSS receiver using the one or more processors of the NSS receiver, the position determined based at least in part on the corrected observations.