遥感学报
遙感學報
요감학보
JOURNAL OF REMOTE SENSING
2009年
1期
49-53
,共5页
干涉%HELIX构形%有效基线%相关系数%相位误差%相对高程精度
榦涉%HELIX構形%有效基線%相關繫數%相位誤差%相對高程精度
간섭%HELIX구형%유효기선%상관계수%상위오차%상대고정정도
interferometry%HELIX formation%effective baseline%correlation coefficient%phase error%relative height accuracy
针对TanDEM-X卫星计划,重点分析其在一个轨道周期内的测高性能的变化情况.首先从建立双星HELIX构形的HILL.方程出发,分析了一个轨道周期内直接影响干涉测高的有效基线,包括顺轨和交轨基线的影响,然后讨论了系统相关系数及其对干涉相位误差的影响,通过建立相对高程误差模型,进一步分析了系统相对高程精度.最后计算机仿真结果验证了分析的正确性.
針對TanDEM-X衛星計劃,重點分析其在一箇軌道週期內的測高性能的變化情況.首先從建立雙星HELIX構形的HILL.方程齣髮,分析瞭一箇軌道週期內直接影響榦涉測高的有效基線,包括順軌和交軌基線的影響,然後討論瞭繫統相關繫數及其對榦涉相位誤差的影響,通過建立相對高程誤差模型,進一步分析瞭繫統相對高程精度.最後計算機倣真結果驗證瞭分析的正確性.
침대TanDEM-X위성계화,중점분석기재일개궤도주기내적측고성능적변화정황.수선종건립쌍성HELIX구형적HILL.방정출발,분석료일개궤도주기내직접영향간섭측고적유효기선,포괄순궤화교궤기선적영향,연후토론료계통상관계수급기대간섭상위오차적영향,통과건립상대고정오차모형,진일보분석료계통상대고정정도.최후계산궤방진결과험증료분석적정학성.
According to TanDEM-X satellite program,this paper studies interferometric capabilities of TanDEM-X mission during an orbit period and tries to get the change of relative height error in a global scope.Firstly,based on HILL-equation of the helix formation,effective baseline,including the range and azimuth effective baseline,which has a great impact on interferometry is analyzed in detail during an orbit period.Then the influence of baseline decorrelation imposing on interferometric phase error is discussed detailedly,which is the most important influence on relative height error.At last relative height model is established and relative height error or TanDEM-X system is presented further.The computer simulating result shows the validity of analysis.
