高增益复合天线在超长站距遥测地震台网中的应用
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摘要
自行研制的复合阵列天线具有增益高、方向性图尖锐、抗干扰能力强的特点。天线系统应用于超长距离的信号传输取得了很好的效果。乌鲁木齐遥测地震台网使用自行研制的天线系统用２．５～３．５ Ｗ 发射功率发射。该天线可接收新疆乌鲁木齐台网长站距、超长站距（２８０ ｋｍ ）２２３～２３５ＭＨｚ 频段的地震信号。信号场强贮备满足规范要求，不低于３０ ｄＢ，从而保证了超长站距无线遥测地震信号的接收质量
The composite arrayed antenna has the characteristics of high gain, sharp directionality and strong anti disturbance ability. After it is applied to ultra long spaced transmission, better effects have been got. In this paper, a kind of self made antenna system that is used in Urumqi Telemetric Seismic Network is introduced. This system is able to transmit signals with the power of 2.5～3.5 W,and receive the seismic signals in the frequency band of 223～235 MHz. These signals are transmitted among stations with long or ultra long station distance (280 km) in the network.The field intensity of the signals, not less than 30 dB, meets the need of the rule ,thus making sure of the quality of signal receiption.
The composite arrayed antenna has the characteristics of high gain, sharp directionality and strong anti disturbance ability. After it is applied to ultra long spaced transmission, better effects have been got. In this paper, a kind of self made antenna system that is used in Urumqi Telemetric Seismic Network is introduced. This system is able to transmit signals with the power of 2.5～3.5 W,and receive the seismic signals in the frequency band of 223～235 MHz. These signals are transmitted among stations with long or ultra long station distance (280 km) in the network.The field intensity of the signals, not less than 30 dB, meets the need of the rule ,thus making sure of the quality of signal receiption.
引文
1 佘光明等.共用天线电视原理和设计.北京:中国广播电视出版社,1991.96.
2 王国强.应用电视接收天线.上海:上海科学技术文献出版社,1986.123～124.
2 王国强.应用电视接收天线.上海:上海科学技术文献出版社,1986.123～124.
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