| CUSUM算法的星载双频GPS周跳探测研究 |
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| 引用本文： | 赖育网,张寅生,程洪玮,易东云.CUSUM算法的星载双频GPS周跳探测研究[J].测绘科学,2011,36(1):42-44,133. |
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| 作者姓名： | 赖育网 张寅生 程洪玮 易东云 |
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| 作者单位： | 国防科学技术大学理学院;北京跟踪与通信技术研究所; |
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| 基金项目： | 国防预研基金项目(9140A22040508KG01) |
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| 摘 要： | 本文针对星载双频GPS应用中的小周跳探测问题,提出了一种新的基于CUSUM算法的周跳探测方法。该方法首先利用M-W组合构造Q统计量,消除M-W组合均值未知的影响;然后构造基于Q统计量的CUSUM检验统计量,将小周跳的偏移影响累加起来,达到放大的效果,提高探测小周跳的灵敏度。最后分别利用仿真数据和CHAMP卫星实测数据进行小周跳探测试验,试验结果验证了该方法的正确性和有效性。
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| 关 键 词： | 周跳探测 Q统计量 CUSUM算法 |
Satellite-borne dual frequency GPS cycle-slip detection based on CUSUM algorithm |
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| LAI Yu-wang,ZHANG Yin-sheng,CHENG Hong-wei,YI Dong-yun.Satellite-borne dual frequency GPS cycle-slip detection based on CUSUM algorithm[J].Science of Surveying and Mapping,2011,36(1):42-44,133. |
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| Authors: | LAI Yu-wang ZHANG Yin-sheng CHENG Hong-wei YI Dong-yun |
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| Institution: | ①(①School of Science,National University of Defense Technology,Changsha 410073,China;②Beijing Institute of Tracking and Telecommunication Technology,Beijing 100094,China) |
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| Abstract: | For the problem of detecting small cycle-slip,this paper proposed a new method of satellite-borne dual frequency GPS cycle-slip detection based on CUSUM algorithm.First,this method constructed Q statistic using the M-W combination to eliminate the influence caused by unknown average of the M-W combination.Then the CUSUM test statistic was constructed based on Q statistic to cumulate the shift influence of the small cycle-slip,attaining the effect for enlarging the shift influence.It could improve the sensit... |
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| Keywords: | cycle-slip detection Q statistic CUSUM algorithm |
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