A New Difference Coherent Direct P Code Acquisition Algorithm

摘要：

In the process of signal acquisition for satellite navigation receiver, compare to the non-coherent acquisition algorithm, the differential correlation based acquisition algorithm is better for improving SNR. Due to the high bit rate of navigation message on P-code, traditional differentially coherent integration algorithm cant be used, a new method called bitsynchronization-based differentially coherent integration algorithm is presented, bit-synchronization is achieved during acquisition through the a periodic characteristic of P-code in order to avoid the effect of navigation message. From the theoretical analysis and probability density function fitting using real data, it is shown that this algorithm have 0.6dB SNR improvement compare to non-coherent algorithm, and is proved through simulation by real data.

关键词： P-code Direct Acquisition Differentially Coherent Dit-synchronization

作者: LIU Feng LI Xin ZHANG Bing-qi

作者单位: School of Information and Electronics, Beijing Institute of Technology, Beijing, 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: 454-457

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）