Data Transmission by Multiple Communication Channels in the Hydrological Telemetering System of the Three Gorges

摘要

Numerous telemetering stations, complex communication network and difficult implementation characterize the hydrological telemetering system of the Three Gorges, in which the VHF, PSTN, Inmarsat-C and Omnitracs channels are all applied, hi this paper the features and actualization methods of the four channels are discussed; how to overcome the disadvantages that influence the transmission, and finally improve the straightway rate of the system is the emphasis.