Search

How to fix integer ambiguity quickly and accurately is a key problem in carrier phase measurement. In order to improve the search rate of integer ambiguity, a integer ambiguity resolution algorithm based on beetle antennae colony search (BACS) algorithm was proposed. Through the comparison experiment with BAS algorithm, Bas-Nadam algorithm, LAMBDA algorithm and MLAMBDA algorithm, the solution rate and stability of the three-dimensional ambiguity solution were carried out. When the success rate of the solution of BACS algorithm was equal to that of LAMBDA and MLAMBDA algorithm, it can use less time to search the optimal ambiguity solution. In order to verify whether BACS algorithm is applicable in the case of high-dimensional ambiguity solution and engineering solution, the experiments of high-dimensional ambiguity solution and the application experiments of BACS algorithm under single frequency and single GPS system were carried out. The analysis and experiment show that BACS algorithm can guarantee the real-time performance and robustness of high-dimensional ambiguity solution. For 12-dimensional ambiguity solution, the average solution time is 0. 068 seconds and the success rate is 92% . For low-dimensional ambiguity solution, the solution rate is faster and the success rate is higher. In the engineering calculation of single frequency single GPS system, the positioning accuracy of x, y and z directions is ± 0. 008 meter, ± 0. 01 meter and ± 0. 01 meter respectively, which can reach centimeter-level precision positioning. [ABSTRACT FROM AUTHOR]