%0 Journal Article
%T Error analysis of ionospheric dispersion on dual-frequency altimetry<br>双频雷达高度计电离层色散效应误差分析
%A XU Xi-Yu
%A LIU He-Guang
%A <br>徐曦煜
%A 刘和光
%J 中国科学院研究生院学报
%D 2007
%I 
%X Radar altimeters selects full-deramp technology in pulse compression,and apply two frequencies to reduce the ionospheric range errors.These will,as this paper shows,introduce an effect called "Ionospheric Dispersion",especially in lower frequency,and this can lead to errors in height estimation.No foreign document is available to solve this problem,so this paper attempts to illustrate it.The authors finally draw the conclusion that these errors can be treated similarly as the quadratic phase errors,whose nature and solution are wellestablished,and that the magnitude of this error for a typical altimeter is also discussed.Furthermore,the actual Doppler errors are deduced and it is shown that the existent Doppler algorithms are adequately accurate.Finally,by computer simulation,the sidelobes introduced to the system point target response are illustrated and the errors are estimated.
%K dual-frequency altimeter
%K ionospheric dispersion
%K quadratic phase errors
%K point target response<br>双频高度计
%K 电离层色散效应
%K 二次相位误差
%K 点目标响应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=5E55335FFB0A74F8&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=0B39A22176CE99FB&sid=6CCE24D86D03D083&eid=C812B90E96151014&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=9