| 基于GDOP的三站时差定位精度分析 |
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| 引用本文： | 赵琨,何青益. 基于GDOP的三站时差定位精度分析[J]. 无线电工程, 2012, 42(5): 15-17,33 |
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| 作者姓名： | 赵琨 何青益 |
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| 作者单位： | 1. 西安电子科技大学,陕西西安710071／中国电子科技集团公司第五十四研究所,河北石家庄050081
2. 中国电子科技集团公司第五十四研究所,河北石家庄,050081 |
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| 摘 要： | 为了满足三站时差(Time Difference of Arrival,TDOA)定位系统对定位精度的要求,论述了三站时差定位原理。用几何稀释精度(Geometric Dilution of Precision,GDOP)分析定位精度并做了仿真。对仿真结果进行分析,讨论站址测量误差和时差定位误差对定位精度的影响,提出要满足时差定位精度要求所需要达到的站址测量误差和时差测量误差指标,以及在工程实现中提高时差定位精度的方法。
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| 关 键 词： | GDOP 时差定位 站址误差 时差测量误差 |
Analysis of Location Precision in Tri-station TDOA Location Systems with GDOP |
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| ZHAO Kun,HE Qing-yi. Analysis of Location Precision in Tri-station TDOA Location Systems with GDOP[J]. Radio Engineering of China, 2012, 42(5): 15-17,33 |
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| Authors: | ZHAO Kun HE Qing-yi |
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| Affiliation: | 1.Xidian University,Xi＇an Shaanxi 710071,China;2.The 54 Research Institute of CETC,Shijiazhuang Hebei 050081,China) |
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| Abstract: | To meet the requirement of tri-station Time Difference of Arrival（TDOA）location system for location precision,the principle of tri-station TDOA location is introduced.The location precision in two dimensional（2-D）tri-station TDOA location systems is analyzed with geometric dilution of precision（GDOP）.Based on the analysis of simulation results,the influence of station site error and TDOA error on location precision is discussed,and an index of 2%R location precision in 300 km range is proposed.Finally,the methods for improving location precision in engineering implementation are provided. |
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| Keywords: | GDOP TDOA location station site error TDOA error |
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