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| 多项式建模解电离层相位污染阶数选择新方法 | |
| 引用本文： | 李雪,邓维波,焦培南,姬勇力.多项式建模解电离层相位污染阶数选择新方法[J].电波科学学报,2009,24(6). |
| 作者姓名： | 李雪 邓维波 焦培南 姬勇力 |
| 作者单位： | 1. 哈尔滨工业大学,黑龙江,哈尔滨,150001;中国电波传播研究所青岛研发中心,电波环境特性及模化技术国家重点实验室,山东,青岛,266107 2. 哈尔滨工业大学,黑龙江,哈尔滨,150001 3. 中国电波传播研究所青岛研发中心,电波环境特性及模化技术国家重点实验室,山东,青岛,266107 |
| 基金项目： | 国家重点试验室基金项目 |
| 摘 要： | 电离层相位污染使天波超视距雷达杂波频谱展宽,影响舰船等低速目标检测.针对这一问题,近年来发展了基于分段多项式相位建模和高阶模糊函数的(HAF)解电离层污染算法,如何合理地选取模型阶数是该算法的核心.给出了两种改进的自适应多项式建模阶数选择方法.并利用仿真方法进行了验证,结果表明:基于高阶模糊函数变换性质的频域和时域阶数选择方法的计算量较现有算法有较大提高,且频域法可在较低信噪比下准确判断多项式阶数. |
| 关 键 词： | 电离层相位污染 多项式相位建模 多项式阶数 相位污染校正 |
Novel order-select method of polynomial modeling for ionosphere phase perturbation correction |
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| LI Xue,DENG Wei-bo,JIAO Pei-nan,JI Yong-li.Novel order-select method of polynomial modeling for ionosphere phase perturbation correction[J].Chinese Journal of Radio Science,2009,24(6). | |
| Authors: | LI Xue DENG Wei-bo JIAO Pei-nan JI Yong-li |
| Affiliation: | LI Xue1,2 DENG Wei-bo1 JIAO Pei-nan2 JI Yong-li2 (1.Harbin Institute of Technology,Harbin Heilongjiang 150001,China,2.China Research Institute of Radiowave Propagation,National Key Laboratory of Electromagnetic Environment,Qingdao Sh,ong 266107,China) |
| Abstract: | Ionosphere phase perturbation made the clutter spectrum of sky-wave over-the-horizon radar (OTHR) spread and influenced low-speed object detection such as ship. Recently,an algorithm based on piecewise polynomial phase modeling and high-order ambiguity function(HAF) is developed aiming at this problem. How to select the model order rationally is critical in the algorithm application. Two improved order-selecting methods of self-adaptive polynomial modeling are proposed and verified by simulation. The result... |
| Keywords: | ionosphere phase perturbation polynomial phase modeling polynomial order number phase perturbation correction |
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