RIVER BED SEARCHING METHOD AND RIVER BED IMAGE FORMING SYSTEM

摘要

PROBLEM TO BE SOLVED: To obtain a river bed image forming system which forms automatically a map of a river bed for knowing the change of a river bed. SOLUTION: After imitation stones including bar magnets are scattered on a river bed, a worker on a boat searches the river surface by using a GPS including type magnetic sensor 2. A tranceiver 3 transmits the detected data (imitation stone magnetic intensity) and GPS position data, as transmission data, to a tranceiver 4 arranged on a bank. The GPS position of the transmission data is displayed as imitation stone position, on a present river bed map (where imitation stone position is not present) which is displayed by an image processor 5 (personal computer) connected with the tranceiver 4, thereby obtains a river bed image (where imitation stones are present) which shows change of the river bed corresponding to the amount of water.