INVESTIGATIONS OF ARECEIVER CLOCK BIAS USING PSEUDO-RANGE POINT POSITIONING SOLUTION

Abstract

Receiver’s clock behaviour is studied using pseudo-range model assuming satellite position as correct. A single point solution was carried out solving for approximate values of Receiver position, (three Cartesian coordinates) together with the clock bias model for the receiver. Moreover, the receiver’s clock bias was modeled and hence estimated as one term from GPS time (first model) and as a second-degree polynomial to estimate an offset, a drift and a drift rate. There is no significant difference between the two models. However it is quite realistic to model the receiver clock bias as one parameter.