| 用Landweber法求解GPS定位参数 |
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| 引用本文： | 冯遵德,李云云. 用Landweber法求解GPS定位参数[J]. 测绘科学, 2011, 36(6): 144-145 |
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| 作者姓名： | 冯遵德 李云云 |
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| 作者单位： | 徐州师范大学测绘学院,江苏徐州,221116 |
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| 基金项目： | 国家自然科学基金资助项目(40874011);江苏省高校自然科学基金资助项目(09KJB42003) |
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| 摘 要： | 在GPS定位中,由于观测结构不好等原因存在病态问题,常常造成GPS定位参数的最小二乘解不稳定.针对求解病态可题在参数估计中的影响,本文提出采用Landweber迭代正则化求解整周模糊度；在实施过程中,提出了迭代次数的确定方法；根据计算实例验证了Landweber迭代正则化方法求解GPS定位参数的有效性.
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| 关 键 词： | 病态问题 正则化方法 Landweber迭代法 |
Solving GPS positioning parameters based on Landweber iteration |
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| FENG Zun-de,LI Yun-yun. Solving GPS positioning parameters based on Landweber iteration[J]. Science of Surveying and Mapping, 2011, 36(6): 144-145 |
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| Authors: | FENG Zun-de LI Yun-yun |
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| Affiliation: | (School of Geodesy and Geomatics,Xuzhou Normal University,Jiangsu,Xuzhou 221116,China) |
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| Abstract: | In GPS positioning,ill-conditiond problems that are due to some reasons such as bad structures of observation often cause the least-square solutions of GPS positioning parameters unstably.For the influence of ill-conditiond problems in parameter estimation,the Landweber iterative regularization methods was put forward to solve ambiguities.In the solving process,the method to determine the number of iterations was proposed.On the basis of calculation examples,the effectiveness of the Landweber iterative regularization method to solve GPS positioning parameters. |
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| Keywords: | ill-conditiond problems regularization method Landweber iteration |
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