天绘一号03星无控定位精度改进策略

doi:10.11947/j.AGCS.2019.20190058

测绘学报 ›› 2019, Vol. 48 ›› Issue (6): 671-675.doi: 10.11947/j.AGCS.2019.20190058

• 摄影测量学与遥感 • 下一篇

天绘一号03星无控定位精度改进策略

王任享^1,2, 王建荣^1,2, 李晶³, 朱雷鸣³, 李五³, 杨俊峰³

1. 地理信息工程国家重点实验室, 陕西西安 710054;
2. 西安测绘研究所, 陕西西安 710054;
3. 中国天绘卫星中心, 北京 102102

收稿日期:2019-02-02 修回日期:2019-04-03 出版日期:2019-06-20 发布日期:2019-07-09
通讯作者: 王建荣 E-mail:jianrongwang@sina.com
作者简介:王任享(1933-),男,研究员,中国工程院院士,从事卫星摄影测量的理论和应用研究。

Improvement strategy for location accuracy without ground control points of 3rd satellite of TH-1

WANG Renxiang^1,2, WANG Jianrong^1,2, LI Jing³, ZHU Leiming³, LI Wu³, YANG Junfeng³

1. National Key Laboratory of Geo-Information Engineering, Xi'an 710054, China;
2. Xi'an Institute of Surveying and Mapping, Xi'an 710054, China;
3. Center of TH-Satellite of China, Beijing 102102, China

Received:2019-02-02 Revised:2019-04-03 Online:2019-06-20 Published:2019-07-09

摘要/Abstract

摘要： “全球连续覆盖模式”传输型摄影测量卫星系动态摄影，无控定位模式下难以达到框幅式像片定位水平。本文在天绘一号已有研究基础上，深化03星摄影测量无控定位精度改进模式的探讨研究。在相机参数在轨标定中增加对相机内方位元素的附加改正，解决相机结构宽高比（卫星条带摄影覆盖宽度与卫星轨道高度的比值）太小对主距标定结果的影响，进而削弱系统误差，提高卫星影像的平面定位精度。通过境外地区检测，无控定位精度达到高程2.4 m（RMS），平面3.7 m（RMS）。检测结果表明，只依靠星上GNSS接收机、星敏感器，利用相机参数在境内标定结果，“全球连续覆盖模式”单航线卫星影像无控定位结果达到理论设计指标。

关键词: 卫星摄影测量, 空中三角测量, 无控定位, 外方位元素, 在轨标定

Abstract: The transmission photogrammetric satellite with global coverage on a continuous basis belongs to dynamic photography, and the location without ground control points (GCPs) can-not reach to the level of the frame imagery. In this paper, the location without GCPs is researched in-depth about 3th satellite, based on the existing research results of TH-1. In order to counteract the negative effect of small width-to-height ratio (ratio of satellite strip photographic coverage width to satellite orbital height), the additional corrections of interior orientation elements were performed during the on-orbit calibration. As a result, the systematic errors were reduced while the horizontal location accuracy was improved, and the location accuracy without GCPs have achieved to 3.7 m (horizontal accuracy) and 2.4 m (vertical elevation accuracy) using foreign testing field. The location without GCPs of a single strip satellite imagery with global coverage on a continuous basis can be improved to the theoretical level by using its GNSS receiver, star tracker and domestic calibration results of camera parameters.

Key words: photogrammetric satellite, aerial triangulation, location without GCPs, exterior orientation elements, on-orbit calibration

中图分类号:

P236

王任享, 王建荣, 李晶, 朱雷鸣, 李五, 杨俊峰. 天绘一号03星无控定位精度改进策略[J]. 测绘学报, 2019, 48(6): 671-675.

WANG Renxiang, WANG Jianrong, LI Jing, ZHU Leiming, LI Wu, YANG Junfeng. Improvement strategy for location accuracy without ground control points of 3rd satellite of TH-1[J]. Acta Geodaetica et Cartographica Sinica, 2019, 48(6): 671-675.

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天绘一号03星无控定位精度改进策略

Improvement strategy for location accuracy without ground control points of 3rd satellite of TH-1

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