【作者】 张斌斌； 施鑫； 曹秀英；

【Author】 Zhang Binbin 1 ,Shi Xin 2 ,Cao Xiuying 3 1. National Mobile Communications Research Laboratory, Southeast University, Nanjing, China

【机构】 东南大学移动通信国家重点实验室；

【摘要】 伪距差分GPS利用基站纠偏信息可以有效地纠正传统GPS的测量误差,提高定位精度。但是考虑在DGPS参考站点网络建设滞后或者地形阻隔而无法持续获取纠偏信号的情况下,导航定位性能将会下降,在这种情况下,本文提出了移动台利用累积接收到得GPS纠偏信息来预测当前时刻纠偏信息以提高定位精度。当移动台能够接收到GPS纠偏信息时,采用接收到得GPS纠偏信息修正GPS信号;当无法获取GPS纠偏信息时,通过对累积GPS平均以预测当前纠偏信息来提高定位精度。仿真结果显示,当GPS接收机短时间内获取不到GPS纠偏信息时,利用预测1的纠偏信息可以有效地提高定位精度。更多还原

【Abstract】 Pseudo-range Differential Global Position System (DGPS) can effectively correct the measurement error of traditional GPS using the correction data from the base station, which can improve the position precision. But the navigation position performance will degrade when the receiver can’t get the correction data due to the lag network construction of DGPS reference station or the barrier of terrain. Under this situation, this paper proposes a method to forecast the correction data with the accumulated data to improve the position precision of the mobile station. When the mobile station can receive the correction data, it corrects the GPS signal, and when the receiver can’t get correction data, it can improve its position precision by averaging the accumulated data to predict the correction data. The simulation result shows that, the predicted the correction data can effectively improve the position precision when the receiver can’t get the correction data for a short period of time.更多还原