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Proceedings Paper

Stereoscopic intersection of satellite SAR data by using equivalent scan-line projection geometry
Author(s): Yueqin Zhou; Deren Li; John L. van Genderen
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Paper Abstract

Because of the ability to provide data of the earth's surface independent from sun illumination and cloud coverage, SAR has become a valuable complement to optical remote sensors, such as SPOT HRV, MOMS-2 etc. In this paper, the equivalent scan-line projection geometry is adopted to carry out the stereoscopic intersection of satellite SAR data. According to this geometry, the collinearity equations can be written to express relations between the image points and the corresponding ground points. Then the collinearity equations are used to compute the orbital parameters for each image of the stereopair, respectively, which is called the backward space intersection. By using the collinearity equations combined with the computer orbital parameters and the measured image coordinates, the forward space intersection is carried out, from which the slant distances R1, and R2 from an unknown ground point to the left and right antennas are computed, followed by the computation of the range difference dR; and then the relevant relations between the unknown ground coordinates and the distance difference dR are used to compute the unknown ground coordinates.

Paper Details

Date Published: 19 August 1998
PDF: 8 pages
Proc. SPIE 3503, Microwave Remote Sensing of the Atmosphere and Environment, (19 August 1998); doi: 10.1117/12.319454
Show Author Affiliations
Yueqin Zhou, Wuhan Technical Univ. of Surveying and Mapping (Netherlands)
Deren Li, Wuhan Technical Univ. of Surveying and Mapping (China)
John L. van Genderen, International Institute for Aerospace Survey and Earth Sciences (Netherlands)

Published in SPIE Proceedings Vol. 3503:
Microwave Remote Sensing of the Atmosphere and Environment
Tadahiro Hayasaka; Dong Liang Wu; Yaqiu Jin; JingShang Jiang, Editor(s)

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