An optimized fast ambiguity search method for ambiguity resolution on the fly

Numerous ambiguity search algorithms have been proposed over the last several years and the required computational time for the search has been significantly reduced. In this paper, an optimized ambiguity search method is described. The method has incorporated several existing fast ambiguity search concepts and therefore the ambiguity search speed can be further improved. In addition to the improvement of the ambiguity search speed, special attention has been paid to the improvement of the reliability of the ambiguity search process. High reliability of ambiguity resolution is essential for robust ambiguity fixed GPS positioning and navigation. The search method developed has been implemented into a commercial GPS data processing software package JUPITER and tested with respect to various data sets. Numerical analysis are conducted to demonstrate its efficiency in terms of ambiguity search speed and reliability