卫星雷达测高波形修正方法研究  

Improved Method for Modification of Satellite Radar Altimeter Waveform

作　　者：汪海洪[1,2] 罗北[1] 梁月[1] 黄征凯[1] 

机构地区：[1]武汉大学测绘学院,武汉市珞喻路129号430079 [2]武汉大学地球空间环境与大地测量教育部重点实验室,武汉市珞喻路129号430079

出　　处：《大地测量与地球动力学》2016年第3期202-205,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41174021;41429401);国家973计划(2013CB733302)~~

摘　　要：利用Jason-1SGDR数据分析Tseng波形修正法存在的问题,通过修改参考波形选取策略和异常点插值的定权策略提出改进的波形修正算法。实验表明,改进算法能够避免Tseng法导致的波形前缘变形问题,提高近海海面高的精度。Waveform modification provides a possibility to further improve the quality of coastal altimetry data.Using the Jason-1SGDR data,the shortcoming of Tseng＇s modification method is pointed out.We propose an improved modification algorithm by revising the strategy of selecting reference waveforms and determining weights for amending outliers.Test results show the improved method can avoid the deformation of waveform leading edge caused by Tseng＇s method,and effectively increases the precision of coastal sea surface heights.

关 键 词：卫星测高 波形修正 波形重跟踪 海面高 

分 类 号：P223[天文地球—大地测量学与测量工程]