| 摘要 |
The differential GPS, terrestrial GPS, the hydrographic sounder, and information processing device are chosen to have small dimensions and are combined in a portable box. They are arranged in the box so that they function without modification. An opening (12,13) in the box provides for the removal of the acoustic base of the hydrographic sounder and to activate the various equipment. Device comprises a differential GPS receiver (3) equipped with HF, UHR or VHF communication for positioning by satellite, a terrestrial GPS (8) station with HF, UHF or VHF communication (9), a hydrographic sounder (2) and its acoustic base (11) and a computer device (4) for processing data. |
