Weak Signal Acquisition of High Earth Orbits Based on New BAP Method

摘要：

In order to use GPS at the position of high orbits, it is necessary to research acquisition of weak GPS signal in the environment of high orbit. BAP (Block Averaging Pre-Processing) method is an effective algorithm to process weak signal, but it assumes that the receiver does work in the indoor environment with little dynamic effects. Based on the analysis of orbit parameters effects on the Doppler shift, this article concludes that it is necessary to improve BAP for using in the high orbit environment. From the offset compensation of code Doppler, calculated amount improvement of the algorithm, threshold value reduced, this article does further improvement to the BAP algorithm, making it suitable for high-orbit environment. Simulation results show that: Using of this improved algorithm can effectively reduce the algorithms acquisition threshold value, thus enhancing the ability to acquisition the navigation signals.

关键词： high orbit data block average pre-processing weak signal acquisition

作者: Gannan Yuan Yanjun Xie Chunyan Tao Haibo Liang

作者单位: College of Automation, Harbin Engineering University, Harbin , China

会议类型: 国际会议

会议名称: 2010 IEEE 10th International Conference on Signal Processing(第十届信号处理国际会议 ICSP 2010)

会议地点: 北京

会议语种:英文

页码: 2480-2483

在线出版日期: 2010-08-24（万方平台首次上网日期，不代表论文的发表时间）