Accuracy verification and analysis of ground-based real aperture radar GPRI

doi:10.13474/j.cnki.11-2246.2021.0106

Abstract

Abstract: GAMMA portable radar interferometer (GPRI-Ⅱ) is a new type of ground-based real-aperture radar. It can continuously monitor small-scale deformation areas in real-time and detect high-frequency deformation. To verify its deformation monitoring accuracy, six sets of experiments were designed by using six corner reflectors and two manual displacement platforms to analyze the deformation detection capabilities of GPRI-Ⅱ at millimeter level and submillimeter level. The experimental results show that after the correction of the control points, the root-mean-square error of detecting millimeter-level deformation is less than 0.1 mm and that of detecting submillimeter-level deformation is less than 0.05 mm. GPRI-Ⅱ can achieve observation accuracy at millimeter or even submillimeter level for small deformation areas.

Key words: ground-based radar, GPRI, deformation detection, accuracy verification, corner reflector

CLC Number:

P237

ZHOU Chunxia, WEN Yaohui, CHEN Yiming, WANG Shaoxian, LIU Yong, LI Mingci. Accuracy verification and analysis of ground-based real aperture radar GPRI[J]. Bulletin of Surveying and Mapping, 2021, 0(4): 28-32.

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