| 不依赖假设检验的整周模糊度确认 |
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| 引用本文： | 王新洲,陈永奇.不依赖假设检验的整周模糊度确认[J].测绘科学,2000,25(3):17-21. |
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| 作者姓名： | 王新洲 陈永奇 |
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| 作者单位： | [1]武汉大学科技处,武汉 [2]香港理工大学土地测量与地理资讯学系,香港 |
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| 摘 要： | 扼要分析了现行整周模糊度确认方法 ,进而提出并证明了一条缩小整周模糊度搜索空间的定理。根据此定理 ,提出了一种不依赖假设检验的整周模糊度确认方法。该方法不仅可以加快整周模糊度的搜索速度 ,而且在次小残差二次型和最小残差二次型之比较小的情况下也能固定整周模糊度 ,并给出一个固定正确性的数字指标
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| 关 键 词： | 整周模糊度 搜索空间 确认 |
Validation of the Resolved Ambiguities in GPS Positioning without Hypothesis Test |
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| WANG Xin zhou ,CHEN Yong qi.Validation of the Resolved Ambiguities in GPS Positioning without Hypothesis Test[J].Science of Surveying and Mapping,2000,25(3):17-21. |
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| Authors: | WANG Xin zhou CHEN Yong qi |
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| Institution: | WANG Xin zhou 1,CHEN Yong qi 2 |
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| Abstract: | Ambiguity resolution is the key to precise GPS measurements.In recent years,many methods of ambiguity resolution have been proposed.The step to resolve ambiguity in general method can be divided into three steps.The first step is to obtain the float solution of ambiguities by least square estimation.The second step is to search two candidate ambiguities Z m and Z s,which make the quadratic fores of the residuals to be the minimum and the second minimum.The third step is validation.There are some problems in the three steps to this day.In first step due to the state of normal equation is too bad during the short time,the float solution has not enough precision when the carrier phase observations are only used.In the second step the search space is too large so that the search time is too long.In the third step the hypothesis tests for validation are all approximation.This paper attempts to solve the problems in the second step and the third step.A theorem about to reduce the search space is proved at first.Then according to the theorem a new validation method without hypothesis test has been proposed. |
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| Keywords: | integer ambiguity search space validation |
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