Li Chongyang, Zhang Zhifei, Lv Chong, Zhu Yonghong, Bian Zhifeng, Zhang Chunrui, Wang Rong, Liu Hui, Du Xiaohan. System integration and test of GF-7 bi-linear array stereo mapping sensing camera[J]. Infrared and Laser Engineering, 2021, 50(1): 20200143. DOI: 10.3788/IRLA20200143
Citation: Li Chongyang, Zhang Zhifei, Lv Chong, Zhu Yonghong, Bian Zhifeng, Zhang Chunrui, Wang Rong, Liu Hui, Du Xiaohan. System integration and test of GF-7 bi-linear array stereo mapping sensing camera[J]. Infrared and Laser Engineering, 2021, 50(1): 20200143. DOI: 10.3788/IRLA20200143

System integration and test of GF-7 bi-linear array stereo mapping sensing camera

  • GF-7 stereo mapping satellite launched on November 3, 2019 was equipped with two high-resolution remote sensing cameras “Front camera” and “Back camera”. By the two cameras, the same scene on the ground can be observed from different angles for forming a 3D mapping image. During the development of the stereo mapping camera in the lab, the horizontality of the linear array, field confocal, high-accuracy measurement for elements of interior orientation and distortion should be guaranteed. In order to meet the requirements of the above technical indicators of GF-7 bi-linear array cameras, computer-aided rapid fast adjustment for focal plane and high-precision test for elements of interior orientation and distortion was presented. These methods used in the GF-7 bi-linear array camera improve the efficiency of adjustment and test and guarantee the accuracy of the test results. Finally, confocal plane of each camera is better than ±0.04 mm, horizontality of each linear array is better than ±1′, the accuracy of distortion is better than 2.3 μm. It can provide reference for other large scale mapping camera.
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