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| 引用本文： | 郑彬,吴舜晓,刘增军,欧钢.?????????????λ???仯???????[J].大地测量与地球动力学,2012,32(4):139-143. |
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| 作者姓名： | 郑彬 吴舜晓 刘增军 欧钢 |
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| 作者单位： | 国防科技大学电子科学与工程学院卫星导航研发中心,长沙,410073 |
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| 基金项目： | 教育部“新世纪优秀人才支持计划”(NCET-08-0144) |
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| 摘 要： | ???????????????????λ??????????????????????????????????±?????????·???????????λ????????????????????λ???????????λ???????????????????????????????????????????????λ????????????????????????????????????????????????仯?????
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| 关 键 词： | ???????λ ????????? ?????λ ?????λ??? ????????? |
INVESTIGATION ON CHARACTERISTICS OF RECEIVER’S INITIAL PHASE BIAS CHANGE |
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| Zheng Bin
,
Wu Shunxiao
,
Liu Zengjun
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Ou Gang.INVESTIGATION ON CHARACTERISTICS OF RECEIVER’S INITIAL PHASE BIAS CHANGE[J].Journal of Geodesy and Geodynamics,2012,32(4):139-143. |
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| Authors: | Zheng Bin Wu Shunxiao Liu Zengjun Ou Gang |
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| Institution: | (Satellite Navigation R&D Center,School of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073) |
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| Abstract: | Satellite and receiver’s Initial Phase Biases(IPBs) have a significant influence on ambiguity resolution and convergence time of precise point positioning(PPP).The current receiver IPB is experimentally confirmed to be different when the receiver is turned off and back on.However,its underlying characteristics are seldom investigated in available literatures.On the basis of receiver design and carrier phase measurement mechanism,the article analyzed the impacts of frequency synthesizer,mixer,digital down converter and tracking loop on carrier phase measurement generation.Meanwhile,the mathematical models of carrier phase measurement and IPB are derived.Finally,the receiver IPB’s long-term stability and characteristics according to loss of lock,time adjust and power-on cycle are validated by experiment using navigation signal source and receiver platform. |
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| Keywords: | Precise Point Positioning(PPP) navigation receiver carrier phase initial phase bias integer ambiguity |
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