How multipath error influences on ambiguity resolution
نویسندگان
چکیده
It is known that both code and carrier-phase multipath is currently one of a few remaining obstacles against high precision real time positioning. It easily leads to incorrect ambiguity resolution and causes cm-order fluctuations of positioning. If the multipath error in pseudorange fluctuates largely, the initial ambiguity for the satellite is biased and its search space can be enlarged. As a result, a longer time is needed to resolve the ambiguity and the probability of successful integer ambiguity estimation decreases. The carrier phase, disturbed by multipath largely, leads to the incorrect ambiguity resolution and the fluctuation of the positions of a few cm even if the integer is estimated correctly.
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تاریخ انتشار 2003