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提出了利用集成电路实现多频互控信号的同步接收方法，分析了系统呼损概率大小，给出了主要电原理图和实验结果．结果表明，在输入信号幅度不小于－４０ｄＢ的条件下，系统工作可靠．
An integrated circuit is proposed to realize the synchronous receiving method of multi-frequency mutual-control signals. The probability of system call loss is analyzed, and the main electrical schematic and experimental results are given. The result shows that the system works reliably under the condition that the input signal amplitude is not less than -40dB.