Mathematical models for positioning

Abstract

The code pseudorange at an epoch t can be modeled, cf. Eq. (5.2), by 6.1{\$}{\$}R{\_}r^s (t) = {\backslash}varrho {\_}r^s (t) + c{\backslash}Delta {\backslash}delta {\_}r^s (t).{\$}{\$}Here, Rrs(t) is the measured code pseudorange between the observing receiver site r and the satellite s, the term ϱrs(t) is the geometric distance between the observing point and the satellite, and c is the speed of light. The last item to be explained is $Δ$$δ$rs(t). This clock bias represents the combined clock offsets of the receiver and the satellite clock with respect to system time, cf. Eq. (5.1).