数字鉴频技术在电台检测设备中的应用

针对电台检测的测试需求,简述了传统的模拟鉴频技术,重点分析脉冲滤波法和微分鉴频法的数字鉴频技术,并对2种方法进行仿真运算和算法性能比较,给出了适合于手持式低功耗的电台检测设备的数字鉴频方法。仿真结果表明,该设计不仅能避免模拟电路的一致性和稳定性,而且可利用统一的音频信号处理硬件平台,提高系统设计集成度。

Application of Digital Frequency-Detecting Technology in the Radio Tester

In order to meet the measurement demand of the radio,this paper briefly describes the traditional analog frequency-detecting technology,and analyzes the pulse filter method and differential frequency-detecting method in detail.Both of the methods were simulated and compared.Finally the method was given to suit for the portable and low power radio tester.The simulation result proved that this design can avoid the analog circuit's stability and consistence.When we make use of audio signal processing hardware ...