Home Articles Assesment of Geometric Accuracy of Linear CCD Satellite Images

Assesment of Geometric Accuracy of Linear CCD Satellite Images

Assesment of Geometric Accuracy of Linear CCD Satellite Images

Mehdi Saati

University of Tehran,
Iran
Email: [email protected]

Mohammad Najafi
IAU
Branch of Estahban

Jamshid Noori
IAU
Branch of Estahban
Email: [email protected]

Satellite images captured with pushbroom technology can be used as a power tool for topographic and planimetric mapping. This research has a wide cover area with high acquisition speed in digital format can be captured in multispectral band. Maps at scales of 1:50,000 to 1:100,000 are widely regarded as a necessity for administration and development. Yet in many developing countries, adequate mapping has either not been completed or else the map revision cycles lag far behind the pace of change in many areas. Hence space imaging can be used as a useful tool. In this research the ability of IKONOS, SPOT and MOMS to 2D and 3D information extraction from geometry point of view .data used at 2D case are SPOT image from Varzaneh (Isfahan), one MOMS image from Australia and one IKONOS image from Hamedan have been investigated. In respect to the obtained results SPOT and MOMS images at 2D case can be used to generate medium scale planimetric maps (1:75000). IKONOS images at case can be used to generate large scale planimetric maps. In 3D case three 1A level pairs of SPOT and one pair MOMS image have been used. Investigations on these images showed that medium and small scale mapping from SPOT and MOMS images can be generated. Three IKONOS images from New Philadelphia, Tehran and Hamedan have been used to generate ortho-image. With respect to obtained result from IKONOS images,it has been reviewed that ortho-images with 1:7000, 1:6000 and 1:5000 scales using mentioned images can be generated.