Abstract
The second batch of Zhuhai-1 microsatellites was successfully launched on 26 April 2018. The batch included four Orbita hyperspectral satellites (referred to as OHS-A, OHS-B, OHS-C, and OHS-D) and one video satellite (OVS-2A), which have excellent hyperspectral data acquisition abilities. For the first time in China, a number of hyperspectral satellite networks have been realized. To ensure the application of hyperspectral remote sensing data, a series of on-orbit geometry processing and accuracy verification studies has been carried out on the “Zhuhai-1” hyperspectral camera since the satellite was launched. This paper presents the geometric processing methods involved in the production of Zhuhai-1 hyperspectral satellite basic products, including geometric calibration and basic product production algorithms. The OHS images were used to perform on-orbit geometric calibration, and the calibration accuracy was better than 0.5 pixels. The registration accuracy of the image spectrum of the basic product after calibration, the single orientation accuracy, and the accuracy of the regional network adjustment were evaluated. The spectral registration accuracy of the OHS basic products is 0.3–0.5 pixels, which is equivalent to the spectral band calibration accuracy. The single orientation accuracy is better than 1.5 pixels and the regional network adjustment accuracy is better than 1.2 pixels. The generated area orthoimages meet the seamless edge requirements, which verifies that the OHS basic product image has good regional mapping capabilities and can meet the application requirements.
Funder
National Natural Science Foundation of China
Key Research and Development Program of the Ministry of Science and Technology
Subject
General Earth and Planetary Sciences
Reference22 articles.
1. Orbitahttps://www.myorbita.net/
2. The First Two Satellite OVS-1A/1B of Zhuhai-1 Remote-sensing Micro-nano Satellites Constellation Launched Successfully;Zhan;Space Int.,2017
3. Calibration of PRISM and AVNIR-2 Onboard ALOS “Daichi”
4. Geometric Calibration and Accuracy Assessment of ZiYuan-3 Multispectral Images
5. In-Flight CCD Distortion Calibration for Pushbroom Satellites Based on Subpixel Correlation;Furukawa;IEEE Trans. Geosci. Remote Sens.,2008
Cited by
38 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献