Abstract:

Acquisition methods of weak global positioning system (GPS) coarse/acquisition (C/A) signals are studied. In order to get lower false alarm probability and higher detection probability, the genetic algorithm (GA) is applied to solve this multipurpose optimal problem which has three parameters: the numbers of C/A code periods and navigation data bits which are used for integral, and the acquisition threshold. Simulation shows that the algorithm can solve the problem effectively, and the solution can optimize the parameters in acquisition process.

Key words: GPS , receiver,  , acquisition , method,  , genetic , algorithm,  , weak , GPS , signals,  , false , alarm , probability,  , detection , probability