Navigation Solution for Weak GPS Signal

摘要：

In the real measure of GPS(Globe Position System), the tracking loop is unstable and usable satellite number for navigation is few because of weak GPS signal and its frequent change in the urban environment. To overcome this shortcoming, GPS receiver can track weak GPS signal in challenge environment by using carrier loop of non-coherent DPLL(Digital Phase Lock Loop). On this basis, this paper does some research on the prediction algorithm of weak signal satellites send time with ephemeris stored which can improve the usability of the receiver in the city by making the weak signal satellite participate in navigation. Based on the SPIRENT4500 Multi-channel GPS simulator and SEU-GPS, the result of test is provided to give the verification of the algorithm in the end.

关键词： GPS Non-coherent DPLL Weak Signal Navigation Solution

作者: Haiyu Yu Jun Yang Longxing Shi

作者单位: Electronic Science and Engineering College, Southeast University, Nanjing, Jiangsu, China

会议类型: 国际会议

会议名称: 2012 International Conference on Future Communication and Computer Technology(2012未来通信与计算机技术国际会议ICFCCT 2012)

会议地点: 哈尔滨

会议语种:英文

页码: 418-422

在线出版日期: 2012-05-19（万方平台首次上网日期，不代表论文的发表时间）