High-precision on-orbit geometric calibration of the GF-14 satellite dual-line-array cameras

doi:10.11947/j.AGCS.2023.20220347

Abstract

Abstract: On-orbit geometric calibration is a key link for satellites to achieve high-precision positioning. In this paper, based on the 1∶2000 digital calibration test field in Ningxia, the calibration parameters of the dual-line-array cameras are calculated as a whole by the alternate iteration of forward intersection and backward intersection, and the high-precision on-orbit geometric calibration of the dual-line-array cameras of the GF-14 satellite is achieved. The calibration results were tested by using many testing fields around the world. The test results show that after high-precision geometric calibration, the accuracy of the direct forward intersection of the GF-14 satellite image can reach 2.34 m in plane and 1.97 m in elevation without ground control.

Key words: on-orbit geometric calibration, calibration test field, location accuracy without ground control points, GF-14 satellite

CLC Number:

P227

LU Xueliang, WANG Jianrong, YANG Xiuce, LV Yuan, HU Yan, WEI Yongqiang, CAO Bincai. High-precision on-orbit geometric calibration of the GF-14 satellite dual-line-array cameras[J]. Acta Geodaetica et Cartographica Sinica, 2023, 52(1): 15-21.

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