Proceedings, XXth congress: Proceedings, XXth congress

Altan, M. Orhan

Bibliographic data

Multivolume work

Persistent identifier:: 1663674213

Title:: Proceedings, XXth congress

Sub title:: Istanbul, 12 - 23 July 2004

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1663674213

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.; Auch bezeichnet als XXth International Congress for Photogrammetry and Remote Sensing

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Document type:: Multivolume work

Volume

Persistent identifier:: 166368779X

Title:: Proceedings, XXth congress

Scope:: IV, 226 Seiten

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 166368779X

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(35,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: SIMULATE APPROACH FOR SEVERAL REMOTE SENSING IMAGES’ POSITIONING WITH GPS DATA AND FEW GCPS YAN Qin, QIU Zhicheng, CHENG Chunquan, WANG Yali

Document type:: Multivolume work

Structure type:: Chapter

2004 Noise ixation | 849- aptive sction,” SPIE naging 'arget -283, arth’ urface 1 85, Quality ptical Digital ringer tection ce On ssment lesis , nan, J. 1997, EOS- ational 102, {uman 1995, elHVS id Sig. SIMULATE APPROACH FOR SEVERAL REMOTE SENSING IMAGES’ POSITIONING WITH GPS DATA AND FEW GCPS * YAN Qin®, QIU Zhicheng*, CHENG Chunquan?, WANG Yali® * Chinese Academy of Surveying and Mapping - yangin@casm.ac.cn Liaoning University of Science and Technology- wang_violin@sohu.com KEY WORDS: Photogrammetry, Remote Sensing, GPS, Triangulation, Orientation, Accuracy ABSTRACT: With satellites’ position, the main factors affecting image's positioning accuracy are image's attitudes. Supposing that satellites' position can be determined by GPS, images' positioning without GCP can be implemented upon the characteristic of images overlap. The paper designs an approach for images’ positioning with GPS data and no GCP through combined adjustment and proves that the approach is correct with simulated data. Furthermore, the precision of computed attitudes and targets’ position is analysed. 1. FOREWORD The orientation precision of the remote sensing image mainly depends on the exterior orientation parameters of the satellite with no GCP. In general the satellites’ position error usually leaded to the horizontal shifting effect, and the precision of the angular parameters are the crucial factors of the targets’ positioning. At present some satellites have loaded GPS system which can real-time records the satellite’s position. Furthermore the spatial position of the satellite can be measured and controlled more and more accurate because of the improvement of the GPS precision. As a result, how to eliminate the influence of the attitude error is the key question of the targets’ positioning. Supposing there is a film-recovery photographic satellite, and the photographic scale is 1:64000, the range of one scene image on ground is 10km X 10km. And the precision of the GPS is good enough, so the data GPS acquired can be regarded as the photographic station, i.e. the line exterior orientation parameters of the satellite. Under this condition, the tie points of two or more images were used to correct the attitude parameters of each image and the technology of image targets' positioning with few or even no GCP was brought forward. And the targets’ positioning error on conditions of varying topography and overlap measure was analysed with computer simulation technology. In this paper, the multi-image combined adjustment principle which based on GPS surveyed satellite position and the tie points was introduced. The error equation of combined adjustment was derived. And the satellite image targets’ positioning technology with few or even no GCP was set up. At the same time a series of experiments with simulated data were done to verify the exactness of this method. Further analysis was carried on the influence of targets’ positioning error caused by image’s measured error. 2. PRINCIPLE According to the principle of photogrammetry, image's orientation needs six exterior orientation parameters, i.e. 3 S, S2 Figure 1. tie point spatial coordinate values (Xs,Ys,Zs ) and 3 attitude values (p,c,K). Firstly, supposing the satellite's position can be measured by GPS very accurately. So we will emphasis on how to measure the 3 attitude values precisely. See figure 1, P,, P, are two adjacent images, the shadow is the area where P, overlaps P», S; and S; are photographic stations. S,a and S,b intersect at one point P under the ideal situation. Due to the error of the attitude, a and b were projected at A and B separately. The algorithm we put forward is to project a and b at point P correctly through correcting the attitudes of the image while keeping S, and S; immovability. According to the principle of photogrammetry, some relative values (or absolute values) of the attitude of one stereopair can be calculated using the relative orientation algorithm. To do relative orientation of single stereopair, the relationship between photo base and tie points can be describe by the * Beijing remote sensing information research institute has researched a project named satellite ground application system image processing subsystem. Content of this paper is a part of this project.

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