Test and Analysis of GPS／BDS／GLONASS Combined Pseudo range Point Positioning Performance
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摘要: 本文以高山峡谷地区以及城市建筑群区域GNSS卫星受山体及建筑物遮挡的实际问题为出发点,通过选取不同的卫星方位角模拟不同遮挡环境,研究GPS／BDS、GPS／GLONAS和GPS／BDS／GLONASS组合系统伪距单点定位模型对于单GPS、单BDS系统在不同遮挡环境下的定位精度和三维导航可用性等方面的改善情况。结果表明,组合系统相对于单系统,增加了可见卫星数,降低了PDOP值,当观测条件不佳时,可以很好地改善定位精度和提高三维导航可用性。Abstract: This paper takes practical problems that mountains and buildings are a shelter from GNSS sateliites in the alpine gorge area and city building area as the starting point,and researches pseudorange point positioning model of GPS／BDS,GPS／GLONASS,and GPS／BDS／GLONASS combined systems improve the accuracy and usability in threedimensional navigation comparing with GPS or BDS in different occlusion environment that is simulated by selecting different azimuth. The results show that the combined system compared with the single system, increase the number of visible satellites, reduced the PDOP value.When the poor observation conditions, the combined systems can greatly improve the positioning accuracy and the usability in threedimensional navigation.
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[1] 汪亮,李子申,袁洪,等.BDS／GPS／GLONASS组合的双频单历元相对定位性能分析［J］.科学通报,2015(60):857-868. [2] 胡国荣,崔伟宏.组合GPS／GLONASS加权单点定位方法［J］.兵工学报,2002,23(1):59-63. [3] 高晓,戴吾蛟.基于方差分量估计确定GPS／BD2组合定位先验权比［J］.大地测量与地球动力学,2013,33(2):136-138. [4] 张辉,周田,李博,等.BDS／GPS组合系统定位性能分析［J］.测绘科学,2014,39(6):18-21. [5] 唐卫明,徐坤,金蕾,等.北斗／GPS组合伪距单点定位性能测试和分析［J］.武汉大学学报(信息科学版),2015,40(4):529-533. [6] 李鹤峰,党亚民,秘金钟,等.BDS与GPS、GLONASS 多模融合导航定位时空统一［J］.大地测量与地球动力学,2013,33(4):73-78. [7] 何俊,袁小玲,曾琪,等.GPS／BDS／GLONASS组合单点定位研究［J］.测绘科学,2014,39(8):124-128. [8] 魏子卿.2000 中国大地坐标系及其与WGS84的比较［J］.大地测量与地球动力学,2008(5): 1-5. [9] 陈浩,许长辉,高井祥,等.BDS、GPS及其组合系统伪距单点定位精度分析［J］.山东科技大学学报(自然科学版),2015,34(2):72-77. -
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