Junfeng Xie, Ren Liu, Zongwei Wang, fan Mo, Xianhui Dou. In-orbit geometric calibration and accuracy evaluation of GaoFen-7 spaceborne laser altimeter[J]. Infrared and Laser Engineering, 2021, 50(8): 20200396
- Infrared and Laser Engineering
- Vol. 50, Issue 8, 20200396 (2021)
Fig. 1. Earth observation diagram of GF-7 spaceborne laser altimetry system
Fig. 2. Geometric calibration diagram of spaceborne laser based on terrain matching
Fig. 3. Geometric calibration diagram of spaceborne laser based on single footprint image
Fig. 4. Geometric calibration diagram of spaceborne laser based on triggered ground detector. (a) Physical drawing of detectors triggered by GF-7; (b) Spot of GF-7 beam 1 after fitting; (c) Spot of GF-7 beam 2 after fitting
Fig. 5. Test flow chart
Fig. 6. Calibration data in this paper
Fig. 7. Accuracy verification data of GF-7 spaceborne laser
Fig. 8. Precise attitude data of GF-7 satellite
Fig. 9. Precise track data of GF-7 satellite
Fig. 10. The 672th track beam 1 laser elevation precision under three kinds of calibration method
Fig. 11. The 672th track beam 2 laser elevation precision under three kinds of calibration method
|
Table 1. Atmospheric correction of GF-7 calibration laser point
|
Table 2. Tidal correction of GF-7 calibration laser point
| ||||||||||||||||||||||||||
Table 3. Three kinds of calibration methods to calibrate GF-7 laser pointing deviation
| ||||||||||||||||||||||||||
Table 4. Accuracy of three calibration methods
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20