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一、概况 (一)问题的提出随着水文遥测系统的迅速发展,遥测系统已逐步应用到多山地区,这些地区地势险要,一般的超短波水文遥测系统(频段在224MHz至232MHz)已不再适用。 1989年,我们在论证四川省二滩电站(正在建)水文遥测系统方案时,首先遇到了这样的问题,一些测站必须要采用四级中继中转,才能把数据传到中心站,更困难的是中继站要设在荒无人烟的三千多米山项上,这样将给管理、维修带来很大困难。1990年
First, the general situation (A) the issue With the rapid development of hydrological telemetry systems, telemetry systems have gradually applied to the mountainous areas, terrain in these areas, the general hydrothermal ultra-shortwave telemetry system (band 224MHz to 232MHz) is no longer applicable . In 1989, when we demonstrated the hydrological telemetry system solution for the Ertan Hydropower Station in Sichuan Province, we first encountered such a problem that some stations must use a four-stage relay transfer to make it more difficult to transmit data to a central station The relay station should be located in the desolate area of more than 3,000 meters, which will bring great difficulties in management and maintenance. 1990