天绘一号03星定位精度初步评估

doi:10.11947/j.AGCS.2016.20160373

摘要/Abstract

摘要：

天绘一号卫星是我国第一颗传输型立体测绘卫星，主要用于无地面控制点条件下高精度定位及1∶5万比例尺地形图测绘。01、02星分别于2010年8月24日及2012年5月6日成功发射，03星于2015年11月26日发射，目前3颗星在轨正常运行。01星定位精度经过系统检测后，定位精度为10.3 m/5.7 m（平面/高程），02星定位精度与01星精度相当。本文首先简要介绍了天绘一号卫星的总体概况及其地面处理系统中的关键技术，重点对03星的无控定位精度进行初步试验评估。通过国内外3条航线的试验发现，03星较02星精度有较大提高，在无地面控制点条件下可实现平面7.2 m、高程2.6 m的定位精度。

关键词: 卫星摄影测量, 相机参数标定, 光束法平差, 定位精度, 全球连续覆盖

Abstract:

The TH-1 satellite is the first stereo mapping transmission satellite in China, and the primary mission goal of the satellite is for topographic mapping at 1:50 000 scale and high-accuracy location without Ground Control Points (GCPs). 1^st, 2^nd satellites of TH-1 were launched on August 24, 2010, May 6, 2012, and 3^rd satellite was launched on October 26, 2015. Now, three satellites of TH-1 are well operating on its orbit. After evaluation, the location accuracy of 1^st satellite without GCPs is 10.3 m/5.7 m (horizontal accuracy/vertical elevation accuracy), and the location accuracy of 2^nd is equivalent with 1^st satellite. In this paper, the system overview of TH-1 and the key technical in ground image processing are introduced. Then, the preliminary location accuracy of 3^rd is assessed. The results are shown using three routes images:the location accuracy of 3^rd is higher than 2^nd, and can realize high accuracy location without GCPs, in which the horizontal accuracy is 7.2 m, and the vertical elevation accuracy is 2.6 m.

Key words: satellite photogrammetry, camera parameters calibration, bundle adjustment, location accuracy, global coverage on a continuous basis

中图分类号:

P227

王任享, 王建荣, 胡莘. 天绘一号03星定位精度初步评估[J]. 测绘学报, 2016, 45(10): 1135-1139.

WANG Renxiang, WANG Jianrong, HU Xin. Preliminary Location Accuracy Assessments of 3rd Satellite of TH-1[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(10): 1135-1139.

参考文献

[1] 王任享, 胡莘, 王建荣. 天绘一号无地面控制点摄影测量[J]. 测绘学报, 2013, 42(1):1-5. WANG Renxiang, HU Xin, WANG Jianrong. Photogrammetry of Mapping Satellite-1 without Ground Control Points[J]. Acta Geodaetica et Cartographica Sinica, 2013, 42(1):1-5.
[2] 胡莘. 天绘一号立体测绘卫星概观[J]. 测绘科学与工程, 2013, 33(4):1-4. HU Xin. Overview of the Stereo Surveying and Mapping Satellite TH-1[J]. Geomatics Science and Engineering, 2013, 33(4):1-4.
[3] 王任享, 胡莘, 杨俊峰, 等. 卫星摄影测量LMCCD相机的建议[J]. 测绘学报, 2004, 33(2):116-120. DOI:10.3321/j.issn:1001-1595.2004.02.005. WANG Renxiang, HU Xin, YANG Junfeng, et al. Proposal to Use LMCCD Camera for Satellite Photogrammetry[J]. Acta Geodaetica et Cartographica Sinica, 2004, 33(2):116-120. DOI:10.3321/j.issn:1001-1595.2004.02.005.
[4] WANG Jianrong, WANG Renxiang, HU Xin. Compensation Low-frequency Errors in TH-1 Satellite[C]//2016 XXⅢ ISPRS Congress, Volume XL1-B1, Prague, Czech Republic:[s.n.], 383-387.
[5] ITEK Corporation. Conceptual Design of an Automated Mapping Satellite System (Mapsat)[R]. Alexandria:National Technical Information Service, 1981.
[6] 王任享, 王建荣, 胡莘. LMCCD相机影像摄影测量首次实践[J]. 测绘学报, 2014, 43(3):221-225. DOI:10.13485/j.cnki.11-2089.2014.0032. WANG Renxiang, WANG Jianrong, HU Xin. First Practice of LMCCD Camera Imagery Photogrammetry[J]. Acta Geodaetica et Cartographica Sinica, 2014, 43(3):221-225. DOI:10.13485/j.cnki.11-2089.2014.0032.
[7] 王之卓. 摄影测量原理[M]. 北京:测绘出版社, 1990. WANG Zhizhuo. Principle of Photogrammetry[M]. Beijing:Publishing House of Surveying and Mapping, 1990.
[8] 王任享, 王建荣, 赵斐, 等. 利用地面控制点进行卫星摄影三线阵CCD相机的动态检测[J]. 地球科学与环境学报, 2006, 28(2):1-5. WANG Renxiang, WANG Jianrong, ZHAO Fei, et al. Dynamic Calibrating of Three-Line-Array CCD Camera in Satellite Photogrammetry Using Ground Control Point[J]. Journal of Earth Sciences and Environment, 2006, 28(2):1-5.
[9] HOFMANN O. The Stereo-Push-Broom Scanner System DPS and Its Accuracy[C]//International Geoscience and Remote Sensing Symposium. Rovaniemi:IEEE, 1986:21-28.
[10] 王任享. 三线阵CCD影像卫星摄影测量原理[M]. 北京:测绘出版社, 2006. WANG Renxiang. Satellite Photogrammetric Principle for Three-Line Array CCD Imagery[M]. Beijing:Publishing House of Surveying and Mapping, 2006.
[11] EBNER H, KORNUS W, OHLHOF T, et al. Orientation of MOMS-02/D2 and MOMS-2P/PRIRODA Imagery[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 1999, 54(5-6):332-341.
[12] 王任享. 卫星三线阵CCD影像光束法平差研究[J]. 武汉大学学报(信息科学版), 2003, 28(4):379-385. WANG Renxiang. Bundle Adjustment of Satellite Borne Three-Line Array CCD Image[J]. Geomatics and Information Science of Wuhan University, 2003, 28(4):379-385.
[13] 王建荣, 王任享. "天绘一号"卫星无地面控制点EFP多功能光束法平差[J]. 遥感学报, 2012, 16(S1):112-115. WANG Jianrong, WANG Renxiang. EFP Multi-functional Bundle Adjustment of Mapping Satellite-1 without Ground Control Points[J]. Journal of Remote Sensing, 2012, 16(S1):112-115.
[14] 王任享, 王建荣, 胡莘. EFP全三线交会光束法平差[J]. 武汉大学学报(信息科学版), 2014, 39(7):757-761. WANG Renxiang, WANG Jianrong, HU Xin. The EFP Bundle Adjustment of all Three Line Intersection[J]. Geomatics and Information Science of Wuhan University, 2014, 39(7):757-761.
[15] 王任享, 王建荣, 胡莘. 卫星摄影姿态测定系统低频误差补偿[J]. 测绘学报, 2016, 45(2):127-130. DOI:10.11947/j.AGCS.2016.20150167. WANG Renxiang, WANG Jianrong, HU Xin. Low-frequency Errors Compensation of Attitude Determination System in Satellite Photogrammetry[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(2):127-130. DOI:10.11947/j.AGCS.2016.20150167.
[16] 王任享, 王建荣, 胡莘. 在轨卫星无地面控制点摄影测量探讨[J]. 武汉大学学报(信息科学版), 2011, 36(11):1261-1264. WANG Renxiang, WANG Jianrong, HU Xin. Photogrammetry of In-Flight Satellite without Ground Control Point[J]. Geomatics and Information Science of Wuhan University, 2011, 36(11):1261-1264.
[17] 王建荣, 王任享, 胡莘. 卫星摄影测量中偏流角修正余差改正技术[J]. 测绘学报, 2014, 43(9):954-959. DOI:10.13485/j.cnki.11-2089.2014.0128. WANG Jianrong, WANG Renxiang, HU Xin. Drift Angle Residual Corrrection Technology in Satellite Photogrammetry[J]. Acta Geodaetica et Cartographica Sinica, 2014, 43(9):954-959. DOI:10.13485/j.cnki.11-2089.2014.0128.
[18] 杨元喜. 卫星导航的不确定性、不确定度与精度若干注记[J]. 测绘学报, 2012, 41(5):646-650. YANG Yuanxi. Uncertainty Measure and Accuracy in Satellite Navigation[J]. Acta Geodaetica et Cartographica Sinica, 2012, 41(5):646-650.
[19] 王任享. 天绘一号卫星无地面控制点摄影测量关键技术及其发展历程[J]. 测绘科学, 2013, 38(1):5-7, 43. WANG Renxiang. Key Photogrammetric Progress of TH-1 Satellite without Ground Control Point[J]. Science of Surveying and Mapping, 2013, 38(1):5-7, 43.
[20] 王任享, 王建荣. 无地面控制点卫星摄影测量探讨[J]. 测绘科学, 2015, 40(2):3-12. WANG Renxiang, WANG Jianrong. Discussion on Satellite Photogrammetry without Ground Control Point[J]. Science of Surveying and Mapping, 2015, 40(2):3-12.