OPERATIONAL USE OF RADARSAT AND OPTICAL DATA FOR COASTAL LAND COVER MAPPING

摘要

Multi - sensor data of Radarsat and Landsat - 5 TM Bands 4 and 5 were acquired on September 26, 2000 and June 26, 1997 for a test site of Thailand 's Ban Don Bay. The data display a large amount of information by color differences. It can be seen that these are not only meaningful in terms of land cover type differences but also provide topographic information. The result demonstrates how multi - sensor can be used to map coastal land cover of the largest Birdfoot delta area. Mangrove forest in red is excellently separated from yellowish green of mixed orchard. Pink to cyan color, in flood plain area are covered with paddy field. Within this area, where the deposites are older, many growing rubber trees are in greenish yellow. On Radarsat image, aquaculture activities can be easily detected such as shrimp farming and fish farming due to their dark tones of water surface resulting from low or no radar return and high contrast with bright tone, of both shrimp dikes and various shapes of fish trap.