| Summary: | 博士 === 國立中央大學 === 土木工程學系 === 102 === The key point of accurate and precise application of Global Navigation Satellite Systems is how to obtain integer carrier phase ambiguity correctly and efficiently.
One of the ways to solve the ambiguity resolution problem is ambiguity searching technique with an ambiguity decorrelation technique. Traditionally, an integer-valued limitation of the transformation matrix of decorrelation technique ensures the integer characteristic of candidates existing after the inverse transformation, but it also makes the decorrelation imperfect.
A zero correlation domain or a complete diagonalization covariance matrix could be obtained by the using float transformation matrix. A space in this domain will be used as a threshold, hence the zero correlation domain is called threshold domain. The number of ambiguity candidates based on integer transformation could be reduced through the proposed ZETA method.
ZETA might reject all of candidates and make the ambiguity resolution being no solution. In this research, the partial ambiguity resolution is used to cope with this situation. Partial ambiguity resolution allows some of the resolved of ambiguities to be float-valued ones. A candidate will be easier to pass the threshold with some of ambiguities being solved as float solutions.
The experiments in this paper prove that the method could make the ambiguity resolution become more efficient without decreasing the accuracy. The success rate could also be improved by proposed method.
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