Combined Stereo Location Among Multi-sensor Remote Sensing Images
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摘要: 尝试将IKONOS、SPOT卫星影像与机载SAR影像联立构成多种组合的“立体像对”,以有理函数模型、行中心投影的共线方程以及F.Leberl公式为基础,利用若干地面控制点对影像分别进行外定向,然后由3种不同的传感器模型分别建立了3种复合式立体定位公式。在已知一组同名像点的情况下,可解算出相应地面点的大地坐标。实验结果表明,将具有一定重叠范围的多源遥感影像构成立体像对进行复合式定位是切实可行的,且在一定控制和交会条件下其定位精度与传统立体像对相当。
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关键词:
- “复合式”立体定位 /
- 有理函数模型 /
- 线阵CCD /
- F.Leberl公式 /
- 空间前方交会
Abstract: We described the geometric aspects and the mathematical treatment for stereoscopic image pair composed of IKONOS,SPOT4 satellite images and airborne SAR images.First,the rational function model of IKONOS imagery,collinearity equations with line central projection for SPOT4 imagery and F.Leberl model for SAR imagery as well as methods to simultaneously determine or refine individual parameters of these models were briefly reviewed.Firstly,a straight-forward single-step procedure was developed,which follows the philosophy of photogrammetric bundle adjustment techniques.Secondly,the combined stereo location model with multi-sensor remote sensing images was constructed from these geometry models.The stereo location is the procedure of determining the ground coordinates of a ground point from a pair of corresponding homologue points in the combined stereoscopic pair.Experimental results show that it is feasible to realize combined stereo location with multi-sensor images.The accuracy of combined stereo location is close to classical stereoscopic pairs in some conditions. -
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