| 单频GPS/GLONASS组合单点定位的精度评估 |
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| 引用本文： | 蔡昌盛,戴吾蛟,匡翠林,朱建军.单频GPS/GLONASS组合单点定位的精度评估[J].大地测量与地球动力学,2011,31(3):85-89. |
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| 作者姓名： | 蔡昌盛 戴吾蛟 匡翠林 朱建军 |
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| 作者单位： | 中南大学测绘与国土信息工程系，长沙 410083 |
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| 基金项目： | 国家自然科学基金(41004011); 中南大学前沿研究计划(2009QZZD002);中南大学自由探索计划(201012200086) |
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| 摘 要： | 利用单频伪距观测值和广播星历数据，比较不同观测值权值下GPS/GLONASS组合单点定位的结果，并讨论大气误差对组合单点定位精度的影响。利用最小二乘和卡尔曼滤波两种算法进行单点定位计算，结果表明，组合定位单历元平面位置解精度优于2.5 m，高程方向精度优于4.5 m，24小时解3个坐标分量精度均优于1 m，对于该两种算法，组合定位与单独GPS定位相比精度均有不同程度的提高。
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| 关 键 词： | GPS GLONASS 权重 单点定位 定位精度 |
ACCURACY ASSESSMENT OF COMBINED SINGLE-FREQUENCY GPS/GLONASS SINGLE POINT POSITIONING |
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| Cai Changsheng,Dai Wujiao,Kuang Cuilin,Zhu Jianjun.ACCURACY ASSESSMENT OF COMBINED SINGLE-FREQUENCY GPS/GLONASS SINGLE POINT POSITIONING[J].Journal of Geodesy and Geodynamics,2011,31(3):85-89. |
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| Authors: | Cai Changsheng Dai Wujiao Kuang Cuilin Zhu Jianjun |
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| Institution: | Department of Geomatics Engineering, Central South University, Changsha 410083 |
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| Abstract: | The results of combined GPS/GLONASS single point positioning(SPP) are compared with each other under different observation weights by using single-frequency pseudorange observations and broadcast ephemeris data and then the effect of atmospheric errors on SPP is discussed and analyzed.Finally,the computation of SPP is conducted with the Least Square and Kalman filter algorithms.The results indicate that the combined GPS/GLONASS SPP can achieve accuracies better than 2.5 m in the horizontal components and 4.... |
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| Keywords: | GPS GLONASS weight single point positioning positioning accuracy |
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