关键词: 南沿江城际铁路, 滆湖大桥, GSM-R, 无线覆盖, 长大水面

Abstract: Due to the serious reflection of the water surface to electromagnetic wave, the wireless signal on the water surface is more complicated, and the communication base station cannot be built on the water surface. Therefore, the wireless coverage of GSM-R has become a difficult problem in railway construction. Taking Gehu bridge of Nanyanjiang intercity railway as an example, this paper puts forward four kinds of GSM-R wireless coverage solutions, including base station antenna scheme at both ends of the bridge, additional base station scheme at the island, bridge leaky cable reinforcing scheme and bridge antenna reinforcement scheme, and analyzes the advantages and disadvantages of each scheme from such aspects as the effect of network coverage, operation and maintenance difficulty and investment size, finally, it proposes the construction scheme of Gehu bridge of Nanyanjiang intercity railway, which can be used as a reference for wireless coverage of GSM-R system across the long water surface of high-speed railway in the future.

Key words: Nanyanjiang intercity railway, Gehu bridge, GSM-R, wireless coverage, long water surface