Landsat TM Image Data Archived in China Remote Sensing Satellite Ground Station

CRSGS has provided a large amount of satellite remote sensing products to more than 400 users, domestic and abroad. Applications of TM images have resulted in great economic and social benefits in a wide range of areas of national economy: resource survey and utilization, environment monitoring, geographic cartography, minerarl exploration, disaster detecting and assessing, etc. TM data received by CRSGS since 1986 have been archived.

Through a Catalogue Archive and Browse System(CABS), users can retrieve useful information about data of interests. A image(or a group of images) could be searched according to date, location(latitude-longitude or path-row), and quality, etc. Text catalogue is available for all TM data in the archival.

In addition to text contents, sub-sampled browse images are available for data acquired after Apr.,1994. The major products of CRSGS are TM data on CCTs, floppy disks and imagery on films or papaer prints. Products fall into two categories with respect to processing methods. 1.

Standard processing includes systematic correction, precision correction, and geocoding, etc. 2.Special product(user dependent) includes multi-scene mosaicking, image classification, user defined annotation or administrative boundary adding, special juts enhancement, etc.