Three carrier ambiguity resolution: distance-independent performance demonstrated using semi-generated triple frequency GPS signals
Three carrier ambiguity resolution: distance-independent performance demonstrated using semi-generated triple frequency GPS signals
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三载波模糊度分辨率：使用半生成三频 GPS 信号演示与距离无关的性能
DOI：
10.1007/s10291-009-0131-6
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发表时间：
2010-03-01
期刊：
影响因子：
4.9
通讯作者：
Shen, Yunzhong
中科院分区：
文献类型：
--
作者：
Li, Bofeng;Feng, Yanming;Shen, Yunzhong
尽管在开发用于三载波模糊度解析的有效算法方面进行了大量研究，但如果没有实际的三频数据，就无法有效地展示附加频率信号的全部性能潜力。此外，所有提出的算法都显示出在不同的远程场景中可靠解决中车道和窄车道模糊度方面的困难。在本文中，我们将研究各种与距离相关的偏差的影响，确定对流层延迟是远程三载波模糊度解析的关键限制。为了在站间距离数百公里的区域网络中实现可靠的模糊度解算，提出了一种新的无几何和无电离层模型，可以在几分钟内修复中巷或窄巷可观测量的整数模糊度，而无需距离约束。最后，采用半仿真方法从双频GPS数据生成第三频率信号，并通过实验验证了本文的研究成果。
In spite of significant research in the development of efficient algorithms for three carrier ambiguity resolution, full performance potential of the additional frequency signals cannot be demonstrated effectively without actual triple frequency data. In addition, all the proposed algorithms showed their difficulties in reliable resolution of the medium-lane and narrow-lane ambiguities in different long-range scenarios. In this contribution, we will investigate the effects of various distance-dependent biases, identifying the tropospheric delay to be the key limitation for long-range three carrier ambiguity resolution. In order to achieve reliable ambiguity resolution in regional networks with the inter-station distances of hundreds of kilometers, a new geometry-free and ionosphere-free model is proposed to fix the integer ambiguities of the medium-lane or narrow-lane observables over just several minutes without distance constraint. Finally, the semi-simulation method is introduced to generate the third frequency signals from dual-frequency GPS data and experimentally demonstrate the research findings of this paper.