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中长基线三频GNSS模糊度的快速算法 被引量:64

A New Method for Medium and Long Range Three Frequency GNSS Rapid Ambiguity Resolution
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摘要 通过研究三频最优组合观测值,分析制约中长基线三频模糊度快速解算的主要因素是残留对流层延迟。在此基础上,提出一种中长基线三频模糊度快速解算新方法,该方法先以较高成功率快速固定两个超宽巷模糊度,然后用这两个模糊度固定的超宽巷组合与任一窄巷组合构成无几何误差和无电离层延迟的新组合。由于该组合只受随机噪声的影响,通过对多历元浮点模糊度平均值舍入取整即可准确地固定中长基线的窄巷模糊度。最后基于GPS双频观测数据生成的三频数据,验证了本文观点的正确性和新算法的有效性。 Future three frequency GNSS does bring some benefits to higher success rate and reliability of rapid ambiguity resolution.Nevertheless,the existent three carrier ambiguity resolution methods cannot be competent to ambiguity resolution in the long-range scenario.In this contribution,the key to restricting ambiguity resolution is investigated by analysing the optimal combinations of three frequencies for long-range baselines and the result shows that residual tropospheric delay is the key factor.Based on the ...
出处 《测绘学报》 EI CSCD 北大核心 2009年第4期296-301,共6页 Acta Geodaetica et Cartographica Sinica
基金 国家自然科学基金(40674003 40874016) 现代工程测量国家测绘局重点实验室开放基金(TJES0809)
关键词 全球导航卫星系统 三频模糊度解 最优组合 对流层延迟 电离层延迟 GNSS Three Carrier Ambiguity Resolution(TCAR) optimal combination troposheric delay Ionospheric delay
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