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1.前言我国是一个海岸线绵长、岛屿众多、海域辽阔的社会主义国家,沿海大城市也比较多,随着经济建设的发展,岛屿之间、岛屿与大陆之间、沿海大城市之间的通信也要随之发展,话务量日益增多,所以必须要发展通信容量较大的、距离较长的、保密可靠的海底通信系统,这就是120路浅海通信系统的由来。根据我国沿海的情况,首先发展适应于500米以内的浅海区的电缆系统,这种系统可按长达1200公里来考虑,当增音机增益为51分贝时,电缆增音段长度为34公里。
1. Introduction China is a socialist country with a long coastline, numerous islands and vast sea areas and large coastal cities. With the development of economic construction, the communication among islands, islands and the mainland and coastal cities Therefore, it is necessary to develop a long-distance, confidential and reliable seafloor communication system, which is the origin of the 120-channel shallow sea communication system. According to the situation in China’s coastal areas, first of all to adapt to the shallow water within 500 meters of the cable system, this system can be as long as 1200 km to consider, when the amplifier gain of 51 dB, the cable length of 34 km .