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Tomographic linear array SAR down-looking 3-D imaging based on multi-pass trajectories

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3 Author(s)
Shun-Jun Wei ; Dept. of E.E, Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Xiao-Ling Zhang ; Jun Shi

This paper presents a new concept of tomography LASAR (TomoLASAR) down-looking 3-D imaging technique based on multi-pass trajectory. In contrast to conventional Tomography SAR, TomoLASAR cab obtains a much larger 2-D synthetic aperture and has capability of high resolution imaging in down-looking mode which can avoid shadowing effects. Firstly, the geometrical model and the received signal model of TomoLASAR using multi-pass trajectory are established. Secondly, a time domain back projection beamforming algorithm is presented for the non-uniform multi-pass data processing. In the end, the feasibility of the TomoLASAR and the imaging algorithm are demonstrated by simulated data.

Published in:

Synthetic Aperture Radar (APSAR), 2011 3rd International Asia-Pacific Conference on

Date of Conference:

26-30 Sept. 2011