| 几何精度因子改进算法研究 |
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| 引用本文： | 陈小平,滕云龙,康荣雷,吴善金. 几何精度因子改进算法研究[J]. 电子科技大学学报(社会科学版), 2008, 0(Z1) |
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| 作者姓名： | 陈小平 滕云龙 康荣雷 吴善金 |
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| 作者单位： | 电子科技大学电子科学技术研究院;电子科技大学电子科学技术研究院 成都; |
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| 摘 要： | 提出了一种快速计算几何精度因子(GDOP)的改进算法。该算法基于矩阵的QR分解,避免了由于传统算法在计算量和存储量较大导致定位解算实时性降低的问题;进一步分析了水平精度因子(HDOP)以及高程精度因子(VDOP)之间的关系,得出它们的数学表达式和新的计算方法。通过与传统方法比较,本文提出的改进算法在计算GDOP值时,数值稳定性更好、计算复杂度更低、计算效率更高。
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| 关 键 词： | 几何精度因子 水平精度因子 QR分解 |
Study of Improved Arithmetic of GDOP |
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| CHEN Xiao-ping,TENG Yun-long,KAGN Rong-lei,, WU Shan-jin. Study of Improved Arithmetic of GDOP[J]. Journal of University of Electronic Science and Technology of China(Social Sciences Edition), 2008, 0(Z1) |
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| Authors: | CHEN Xiao-ping TENG Yun-long KAGN Rong-lei WU Shan-jin |
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| Affiliation: | CHEN Xiao-ping,TENG Yun-long,KAGN Rong-lei,, WU Shan-jin (Research Institute of Electronic Science , Technology,University of Electronic Science , Technology of China Chengdu 610054) |
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| Abstract: | In this paper, QR-factorization of matrix is used to conduct the research on geometric dilution of precision in the positioning solution, and a fast algorithm about geometric dilution of precision (GDOP) is proposed. This algorithm can effectively avoid the mass calculations and memories caused by calculating the inverse of matrix directly. The simulation results indicate that the values of GDOP calculated by the new algorithm are the same with common algorithms; but the new algorithm has better numerical s... |
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| Keywords: | GDOP HDOP QR-factorization VDOP |
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