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论文:2017,Vol:35,Issue(3):401-407 |
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引用本文： |
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吴鹏, 廉保旺, 邹晓军. 北斗GEO卫星星体多径反射模型的研究[J]. 西北工业大学学报 |
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Wu Peng, Lian Baowang, Zou Xiaojun. Study of Multipath Reflection Model on Beidou GEO Satellite[J]. Northwestern polytechnical university |
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| 北斗GEO卫星星体多径反射模型的研究 |
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| 吴鹏, 廉保旺, 邹晓军 |
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| 西北工业大学 电子信息学院, 陕西 西安 710072 |
| 摘要: |
| 多径干扰是影响北斗GEO卫星的主要误差源之一，为了研究北斗GEO卫星多径误差产生机理，提出了针对北斗GEO卫星星体表面的信号反射模型，并通过基于交叉验证的小波算法对KARR和XMIS站点接收的北斗GEO卫星观测数据进行分析。同时针对反射模型设计出基于"Morlet"连续小波变换的数值优化算法，得到反射参数。KARR和XMIS站的仿真数据表明，文中提出的卫星多径反射模型可以很好地对实测环境中测得的卫星多径进行预测。 |
| 关键词:
多径效应
北斗GEO卫星
反射模型
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| Study of Multipath Reflection Model on Beidou GEO Satellite |
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| Wu Peng, Lian Baowang, Zou Xiaojun |
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| School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| It is well known that the geostationary orbits (GEO) satellites work at a high circular orbit 35 786 kilometers above the Earth's equator, and are nearly stationary relative to receivers on the Earth. Therefore they are appointed a dual-assignment in satellite navigation system——broadcasting the navigation messages to users, and being served as a ranging source. Because of the stationarity, it is hard to separate orbit error from clock error when GEO satellites is used for a range source. Moreover, the multipath interference is another trouble for GEO code ranging. The recent studies showed that the GEO satellites exist range biases which are often assigned to multipath effects, and the multipath errors might come from the satellite. Therefore, we propose a multipath reflection model based on spacecraft and derive the simulation multipath series with supports of the real Beidou observable data, such as pseudorange, and elevation angle. Also, the "Morlet" wavelet is employed to compare the measured and modelled multipath results from the time domain and frequency domain, respectively. In addition, a numerical optimization method is designed to find the optimal reflection parameters that indicate the most possible reflection occurrence places. From the results, the proposed reflection model proposed GEO satellites can well describe the observed code multipath series. |
| Key words:
multipath effect
Beidou GEO satellites
reflection model
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| 收稿日期: 2016-10-13
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金（61301094）与北斗重大专项基金（GFZX0301040115）资助 |
| 通讯作者:
Email： |
| 作者简介: 吴鹏(1986-),西北工业大学博士研究生,主要从事卫星导航接收机定位算法与抗多径算法的研究。
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| 作者相关文章 |
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| 吴鹏 在本刊中的所有文章 |
| 廉保旺 在本刊中的所有文章 |
| 邹晓军 在本刊中的所有文章 |
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参考文献: |
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[1] Wang G, de Jong K, Zhao Q, et al. Multipath Analysis of Code Measurements for Beidou Geostationary Satellites[J]. GPS Solutions, 2015,19(1):129-139
[2] Wang M, Chai H, Liu J, et al. BDS Relative Static Positioning over Long Baseline Improved by GEO Multipath Mitigation[J]. Advances in Space Research, 2016,57(3):782-793
[3] Zhang F, He H, Tang B, et al. Analysis of Signal Characteristic and Positioning Performance Affected by Pseudorange Multipath for COMPASS[C]//China Satellite Navigation Conference(CSNC) 2013 Proceedings, 2013
[4] Ma X, Shen Y. Multipath Error Analysis of COMPASS Triple Frequency Observations[J]. Positioning, 2015, 5(1):12-21
[5] Hauschild A, Montenbruck O, Thoelert S, et al. A Multi-Technique Approach for Characterizing the SVN49 Signal Anomaly, Part 1:Receiver Tracking and IQ Constellation[J]. GPS Solutions, 2012,16(1):19-28
[6] Montenbruck O, Schmid R, Mercier F, et al. GNSS Satellite Geometry and Attitude Model[J]. Advances in Space Research, 2015, 56(6):1015-1029
[7] Kabashima Y, Obuchi T, Uemura M. Approximate Cross-Validation Formula for Bayesian linear Regression[C]//201654th Annual Auerton Corterance on Communication, Control, and Computing, 2016, 27-30
[8] Ma L, Li M, Gao Y, et al. A Novel Wrapper Approach for Feature Selection in Object-Based Image Classification Using Polygon-Based Cross-Validation[J]. IEEE Geoscience and Remote Sensing Letters, 2017,14(3):409-413
[9] Helal M A, Haydar M S, Mostafa S. Algorithms Efficiency Measurement on Imbalanced Data using Geometric Mean and Cross Validation[C]//2016 International Workshop on Computtional Intelligence(IWCI), 2016:12-13
[10] Grinsted A, Moore J C, Jevrejeva S. Application of the Cross Wavelet Transform and Wavelet Coherence to Geophysical Time Series[J]. Nonlin Processes Geophys, 2004,11(5/6):561-566 |
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相关文献: |
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1．吴鹏, 廉保旺, 王嘉宁.卫星轨道参数对北斗GEO卫星多径效应影响的分析[J]. 西北工业大学学报, 2016,34(5): 879-885 |
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