| 基于混沌加权一阶局域法的IGS超快星历钟差预报 |
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| 引用本文： | 何成文,蔡成林.基于混沌加权一阶局域法的IGS超快星历钟差预报[J].大地测量与地球动力学,2016,36(7):577-580. |
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| 作者姓名： | 何成文 蔡成林 |
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| 摘 要： | 为提高IGS超快星历钟差预报产品的精度，针对卫星钟差数据具有确定项和随机项成分的特点，在采用多项式模型对钟差确定项建模的基础上，提出采用混沌加权一阶局域法对钟差随机项进行建模预报。仿真结果表明，采用混沌加权一阶局域法的预报精度优于超快星历钟差预报产品。
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| 关 键 词： | 混沌 加权一阶局域法 超快星历 卫星钟差 钟差预报 |
Prediction of IGS Ultra-Rapid Ephemeris Clock Error Based on Adding-Weight One-Rank Local-Region Method of Chaos |
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| HE Chengwen,CAI Chenglin.Prediction of IGS Ultra-Rapid Ephemeris Clock Error Based on Adding-Weight One-Rank Local-Region Method of Chaos[J].Journal of Geodesy and Geodynamics,2016,36(7):577-580. |
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| Authors: | HE Chengwen CAI Chenglin |
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| Abstract: | In order to improve the accuracy of IGS ultra-rapid predicted products(IGU-P), in response to the data characteristic of ultra-rapid ephemeris composed of both determined and random items, a new prediction algorithm is proposed. This proposed algorithm is based on a polynomial model, which models random items with adding-weight one-rank local-region method of chaos. The results from the calculating examples show that the accuracy of adding-weight one-rank local-region method of chaos is superior to that of the IGU-P. |
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| Keywords: | chaos adding-weight one-rank local-region method ultra-rapid ephemeris satellite clock error clock error prediction |
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