High Sensitivity GPS Signal in The Kalman Filter Tracking Algorithm

摘要：

　　The research in high-sensitivity GPS technique is introduced in this paper.The GPS signal cant receive by the traditional GPS receiver in the weak signal environment,such as indoor,foliage and urban surroundings,which existing the problems of loosing lock.Using the Kalman filter in place of the traditional methods that including phase locked loop (PLL) and delay locked loop (DLL).In the calculation processing that uses square-root form can alleviate the numerical round-off errors,and improve convergence speed and lower the complex of arithmetic.In the signal tracking process model involves coherent and incoherent integration for the reverse of navigation data bit.The simulation results show that the method can track the carrier-to-noise as low as 20dB-Hz weak GPS signal.The method can also be promoting to Beidou (COMPASS) Navigation Satellite System for the weak signal conditions.

关键词： Global Position System (GPS) Weak Signal Kalman Filter Tracking

作者: Kui Zheng YongHui Hu

作者单位: National Time Service Center, Chinese Academy of Sciences Key Laboratory for Precision Navigation an National Time Service Center, Chinese Academy of Sciences Key Laboratory for Precision Navigation an

会议类型: 国际会议

会议名称: 2012 IEEE 14th International Conference on Communication Technology(2012年第十四届通信技术国际会议(ICCT 2012))

会议地点: 成都

会议语种:英文

页码: 1149-1153

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）