Data quality analysis of ZY-3 02 satellite laser altimeter

被引：0
|
作者：
Li G. [1 ,2 ]
Gao X. [1 ,2 ]
Chen J. [1 ]
Zhao Y. [1 ,3 ]
Mo F. [1 ]
Zhang Y. [1 ]
机构：
[1] Satellite Surveying and Mapping Application Center, Beijing
[2] Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing
[3] Beijing Satellite Information Technology Co., Ltd, Beijing
来源：
Yaogan Xuebao/Journal of Remote Sensing | 2019年 / 23卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Data processing; Night observation; Quality analysis; Remote sensing; Satellite laser altimetry; Satellite side-scanning; ZY-3; 02;
D O I：
10.11834/jrs.20197548
中图分类号：
学科分类号：
摘要：
Civilian earth observation satellite laser altimetry has developed rapidly in recent years. The ZY-3 02 satellite was launched and loaded as the first Chinese earth-observing satellite laser altimeter. The GF-7 satellite and terrestrial ecosystem carbon monitoring satellite with laser altimeter will be launched in the next several years. Analyzing the quality of national laser altimetry data is important to fill in the knowledge gap and boost the development of civilian laser altimetry technique. All the laser altimetry data in this study were processed using the rigorous geometric model. The data availability ratio and quality of the sea surface or during the side swing of the satellite was analyzed. The absolute elevation accuracy of laser footprint points was also evaluated using high-precision referenced terrain data. The availability ratio of ZY-3 02 laser altimetry data was approximately 30%. On the flat terrain, the quality and availability were relatively better than those of other terrains, and the absolute elevation accuracy could reach 1.0 m on flat terrains. The ZY-3 02 satellite laser altimeter can obtain efficient laser data during the on-orbit experiment, and the total availability is not high. However, it is relatively better at night and on flat regions. Intrinsic ranging error and attitude measurement error are the main sources of satellite laser elevation accuracy. The conclusion may be useful for the future national satellite laser altimeter. © 2019, Science Press. All right reserved.
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页码：1159 / 1166
页数：7
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