Abstract:

From ARCE concept the ambiguity search space can be decreased from m-1 dimensions to three dimensions in the condition that m satellites were observed, then the integer Gaussian transformation was used to reduce the ambiguity search space, and all the information like the length of the baseline was also used to decrease the search space. Finally, Cholesky factorization could make the process of searching more efficient. Experiment results show that this method can be used in attitude determination.

Key words: carrier phase, integer ambiguity, attitude determination, GPS, Cholesky factorization