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一种提高海洋雷达高度计重跟踪估值精度的处理方法
New Retracking Method for Improving the Estimates Accuracy of Ocean Radar Altimeter
查看参考文献10篇
文摘
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重跟踪处理可以从雷达高度计接收的海洋回波信号中提取精确的测量信息,传统的海洋高度计重跟踪模型中没有考虑到仪器对回波信号的影响,这种影响造成回波波形与重跟踪模型的偏离,从而降低了重跟踪的参数提取精度.提出了一种利用点目标响应和加权窗进行海洋高度计重跟踪的新方法,该方法考虑了仪器对回波波形的影响因素,在此基础上重新构造了重跟踪的信号模型,使回波波形与重跟踪模型曲线之间符合更好,从而提高了参数提取的精度.利用该方法对SZ-4高度计的数据进行了处理,并将处理结果与同期测量的ERS-2高度计数据进行对比,对比结果显示该方法显著改善了参数提取的效果. |
其他语种文摘
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Retracking is a key phase in the data processing for ocean radar altimeter to extract the precise ocean parameters. Traditional ocean retracking model didn't consider the bias introduced by the instruments) and the bias can reduce the accuracy of estimates. This paper brings forward a new retracking model for radar altimeter, in which the point target response and weight window are utilized to revise the bias of signal model, therefore the accuracy of estimates is improved. This new retracking model is used to process the data of SZ-4 radar altimeter, and the results show that this model can effectively improve the accuracy of the estimates. |
来源
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遥感技术与应用
,2007,22(3):422-427 【核心库】
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关键词
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雷达高度计
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重跟踪
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点目标响应
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加权窗
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地址
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中国科学院空间科学与应用研究中心, 北京, 100080
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1004-0323 |
学科
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电子技术、通信技术 |
文献收藏号
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CSCD:2848366
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