隔河岩遥测地震台网无线信道计算及测试
|
摘要
隔河岩遥测地震台网是由７个遥测地震台、２个中继站和１个接收记录中心组成的地方性遥测台网，其目的是监测隔河岩水库诱发地震活动。台网的合理布局保证了在台网检测范围内地震定位的精度优于Ⅰ类，重要地段的地震监测能力为ＭＬ≥０．５级。台网采用了２２３ＭＨｚ频段的无线传输地震遥测设备。测试结果表明，无线信道功率裕量均在３０ｄＢ以上，信道可靠性优于９９．９９％，各道信号实际连续率在９９．６７％以上，超过规范规定的要求。自１９９３年运行以来，获得了高质量的产出。
The Geheyan telemetric seismic network consists of seven telemetric seismic stations, two relay stations and one reception and record centre. It is a local network and used to monitor the induced seismic activity by the Geheyan reservoir.The rational station distribution assures that the accuracy of seismic location has the advantage over first class in the range of monitoring area, and the seismic monitoring capability in the important region attains to M L ≥0.5 magnitude. The radio transmission telemetric device of 223 MHz band are used in the network. The test results show that the power abundances of radio channels are over 30 dB, the channel reliability is superior to 99.99%, and the practical continuity of channel signal is 99.67% or more. The high quality outputs are obtained since operation in 1993.
The Geheyan telemetric seismic network consists of seven telemetric seismic stations, two relay stations and one reception and record centre. It is a local network and used to monitor the induced seismic activity by the Geheyan reservoir.The rational station distribution assures that the accuracy of seismic location has the advantage over first class in the range of monitoring area, and the seismic monitoring capability in the important region attains to M L ≥0.5 magnitude. The radio transmission telemetric device of 223 MHz band are used in the network. The test results show that the power abundances of radio channels are over 30 dB, the channel reliability is superior to 99.99%, and the practical continuity of channel signal is 99.67% or more. The high quality outputs are obtained since operation in 1993.
引文
1E．C乔丹主编，胡华里等译．无线电、电子、计算机和通信技术手册．北京：宇航出版社，1990，433～475．2樊昌信，等．通信原理．北京：国防工业出版社，1984，71～76．3李乐民，等．数字通信传输系统．北京：人民邮电出版社，1986，409～424．4MojoliLF．Improvingknowledgeofmultipathfading．NationalTelecommunicationConference，NewOrleans，1981．
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心