| 摘要 |
PURPOSE: To positively record and store collection data by transmitting water depth data which are measured by a mobile master station on an unmanned float body to a land sub-station by radio electric wave. CONSTITUTION: At a mobile master station side M of an unmanned float 11, first a sounding sensor 12 measures depth by controlling the operation timing of a controller 5 and depth data are processed in a data format which can be transmitted by radio by data compression, etc. Then, the data are sent to a radio transmitter 16 via a converter 17 and a transmitter 16 transmits the data signal toward a land slave station side L. On the other hand, the slave station side L receives the transmission data signal from the transmitter 16 by a radio receiver 21. Then, a controller 22, for example, converts this signal from analog to digital and so that the signal can be processed by a device at a later stage. Also, each type of data transmission format which is superposed on the reception data is reproduced to data which can be demodulated and decoded. Then, various kinds of data are recorded by a recorder 25 as binary- coded data. |
