Target location performance evaluation of single SAR image of TH-2 satellite system

doi:10.11947/j.AGCS.2022.20210329

Abstract

Abstract: In order to evaluate the target location performance of a single SAR image of TH-2 satellites, this paper uses the theory and method of target location using the Range-Doppler model, Earth's ellipsoidal model and digital elevation model in the positioning experiments, and analyzes the experimental results from two aspects of predicting image point coordinate and positioning the ground target. Using three TH-2 SAR images in different regions to conduct experiment, it is concluded that the predicting image point accuracy is about 1 pixel and the ground target positioning accuracy is less than 2m. The results show that the TH-2 satellite system has reliable system parameters and high precision positioning capability, which can provide reliable data for the ground target locating, the radar orthophoto image generation and other tasks.

Key words: synthetic aperture radar, TH-2 satellite system, image point prediction, target location, Range-Doppler model

CLC Number:

P227

WANG Sai, MENG Xin, LOU Liangsheng, CHEN Gang, QIAN Fangming, LIU Zhiming. Target location performance evaluation of single SAR image of TH-2 satellite system[J]. Acta Geodaetica et Cartographica Sinica, 2022, 51(12): 2501-2507.

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