首页|Optical satellite sensor and positioning accuracy analysis for the Hongqi-1-H9 wide-range satellite in different terrains

Optical satellite sensor and positioning accuracy analysis for the Hongqi-1-H9 wide-range satellite in different terrains

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Abstract The excellent performance of geometric positioning of a newly launched satellite will greatly broaden its application field. Launched on January 15, 2020, the Hongqi-1-H9 wide-range satellite is the largest sub-meter-level satellite worldwide and the first ton-level commercial remote sensing satellite in China, with a resolution of less than 1?m and a swath width of 136?km. This study was aimed at assessing the geometric positioning accuracy of this newly launched satellite considering three aspects, namely, the circle error accuracy, rational polynomial coefficient-based direct geometric positioning accuracy and ground control point-based absolute positioning accuracy under urban, plain, and mountainous areas, with different topographies. The results of the conducted experimental investigation indicated that the Hongqi-1-H9 satellite could exhibit a high positioning accuracy in planar and vertical directions for different terrains. In particular, for our experimental?areas with a low topography and few surface structures, the geometric positioning accuracy of the Hongqi-1-H9 satellite imagery was less than 4m and 2?m in the planimetry and elevation directions, respectively. These characteristics can promote the application of the Hongqi-1-H9 satellite images in agricultural surveys, target detection, and land surveys, among other domains.

Geometric positioningDifferent terrainsThe Hongqi-1-H9 satelliteAccuracy analysis

Song Wenping、Wang Jianxiong、Bai Yang、Wang Linhui、Li Xiang、Tian Shiqiang、Qi Xianyang

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Tongji University

Yunnan Agricultural University

Changguang Satellite Technology Co., LTD

Hunan University of Science and Engineering

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2021

Eurasip Journal on Wireless Communications and Networking

Eurasip Journal on Wireless Communications and Networking

EISCI
ISSN:1687-1472
年,卷(期):2021.2021
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