Jason-3卫星高度计回波波形去噪及重定方法研究  

Study on Echo Waveform Denoising and Retracking of Jason-3 Satellite Altimeter

作　　者：张体强 朱卫东[2] 范子贤 ZHANG Tiqiang;ZHU Weidong;FAN Zixian(Shanghai East Sea Marine Engineering Survey and Design Institute Co Ltd,630 Dongtang Road,Shanghai 200137,China;College of Marine Sciences,Shanghai Ocean University,999 Huchenghuan Road,Shanghai 201306,China)

机构地区：[1]上海东海海洋工程勘察设计研究院有限公司,上海市200137 [2]上海海洋大学海洋科学学院,上海市201306

出　　处：《大地测量与地球动力学》2023年第11期1183-1187,共5页Journal of Geodesy and Geodynamics

基　　金：国家重点研发计划(2016YFB0501701)。

摘　　要：针对传统波形重定方法无法有效处理近海区域卫星高度计回波波形中的噪声问题,提出基于奇异谱分析的Jason-3高度计回波波形重定新方法,以进一步提高波形重定数据质量。通过奇异谱分析方法滤除回波波形中包含的噪声信息,提取出主要波形信息,然后进行波形重定处理。对原始波形及去噪后的波形分别进行波形重定处理,比较分析重定海面高。结果表明,本文提出的基于奇异谱分析的Jason-3高度计回波波形重定方法是有效、可靠的,对进一步拓宽卫星测高技术在近海区域的应用具有一定的借鉴意义。The traditional waveform retracking method cannot effectively process the noise of echo waveform of satellite altimeters in coastal areas,so we propose a new method of Jason-3 altimeter echo waveform retracking based on singular spectrum analysis to further improve the quality of waveform retracking data.Using singular spectrum analysis method,we filter the noise of echo waveform and extract the main waveform information.Then we carry out the waveform retracking processing.We retrack the raw waveform and filtered waveform,and compare and analyze the retracked sea surface height.The results show that the retracking method of Jason-3 altimeter echo waveform based on singular spectrum analysis is effective and reliable,which has a certain reference significance for further expanding the application of satellite altimetry technology in coastal areas.

关 键 词：卫星测高 Jason-3 波形重定 奇异谱分析 海面高 

分 类 号：P228[天文地球—大地测量学与测量工程] P229[天文地球—测绘科学与技术]