The rapid development of spaceborne laser altimetry technology urgently requires an effective on-orbit geometric calibration method to correct the systematic errors in altimetry data. Based on curve matching, this study explores a method for on-orbit geometric calibration of the altimeter without field. The method uses the laser footprint elevation curve to match the DEM for obtaining the laser footprint control points to calculate the calibration parameter, and it is not necessary to build the detector calibration field. We use the ZY3-02 satellite altimetry data to verify the proposed calibration method and to evaluate accuracy of the calibration. Experiment results show that the accuracy of the altimetry data has been significantly improved after conection using the calibration method, which verifies the effectiveness of the method.
CHEN Linsheng
,
ZHOU Mei
,
Tenggeer
,
CHEN Jiuying
,
LI Chuanrong
,
TANG Lingli
. Non-field on-orbit geometric calibration method for spaceborne laser altimeter based on curve matching[J]. Journal of University of Chinese Academy of Sciences, 2020
, 37(1)
: 113
-119
.
DOI: 10.7523/j.issn.2095-6134.2020.01.013
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