无线警报控制系统中的一种通信抗干扰技术

A Kind of Anti-interference Communication Technology Applied for Wireless Alarm Control System

在对扩频抗干扰技术深入研究和比较的基础上,本文提出了采用时频调制方案的通信抗干扰体制,设计并实现了兼有模拟语音和扩频数据两种通信方式的无线警报控制系统。性能分析和测试结果表明,与传统方案相比,该系统的输入门限指标改善了约20dB,实际可以抗50dB以下的强干扰。系统可靠性高,抗干扰能力强,运行效果良好。

On the basis of the research and comparison of spectrum spread technologies, the mechanism of anti-interference communication adopted time-frequency shift keying is put forward. For wireless alarm control system, with analog voice and spectrum spread data communication is designed and implemented. The results of performance analysis and test show that, compared with traditional scheme, the proposed systems have gained about 20 dB improvement on input threshold, and can resist strong interferences which is beyond 50 dB. The total system operates with high reliability and high capability of anti-interference.