CAJ | 학술논문

针对分布式卫星干涉合成孔径雷达图像配准中最大相干相关法在实际应用中缺乏理想相位估计值问题，提出了利用粗数字高程模型反演干涉相位图作为理想相位估计值的处理方法。该方法通过在图像粗配准后利用主辅 SAR 图像的轨道信息、粗 DEM以及主图像雷达成像几何反演出干涉条纹图，并将其作为理想干涉条纹估计值应用在最大相干相关法求取精配准偏移量中。此外，本文根据多基星载 SAR 雷达成像几何给出了利用粗 DEM对 SAR 图像各像素对应目标点通用的空间定位方法及其干涉相位反演方法。ERS-1／2数据处理结果验证了本文方法的有效性。
침대분포식위성간섭합성공경뢰체도상배준중최대상간상관법재실제응용중결핍이상상위고계치문제，제출료이용조수자고정모형반연간섭상위도작위이상상위고계치적처리방법。해방법통과재도상조배준후이용주보 SAR 도상적궤도신식、조 DEM이급주도상뢰체성상궤하반연출간섭조문도，병장기작위이상간섭조문고계치응용재최대상간상관법구취정배준편이량중。차외，본문근거다기성재 SAR 뢰체성상궤하급출료이용조 DEM대 SAR 도상각상소대응목표점통용적공간정위방법급기간섭상위반연방법。ERS-1／2수거처리결과험증료본문방법적유효성。
This paper deals with the problem that the ideal interferometric phases are unavallable in the maximum coher-ent correlation method for distributed satellite interferometric synthetic aperture radar (InSAR)image fine coregistration.A DEM-assisted approach is proposed to estimate the ideal interferometric phases.The proposed method firstly simulates the interferometric phase using the orbit information and a coarse DEMafter coarse coregistration.In fine coregistration process-ing the shifts of each block are estimated by the maximum coherent correlation method after removing the simulated inter-ferogram.Meanwhile,the geolocation and fringe simulation method with coarse DEMare proposed with multi-static SAR fo-cusing geometry which can be used in various SAR acquisition modes.Finally,the validity of the method is demonstrated by ERS-1 /2 real data.