摘要
文章介绍了数字化短波发射机特点及功能;分析短波发射机激励器各种信号种类的实现方法;分析了数字AGC/ALC的实现方法;详细介绍PPT解调与处理以及低通滤波器的设计;采用DSP信号处理单元实现利用远距离的PTT音频调制信号进行解调还原。
This paper introduces the features and functions of digital shortwave transmitters, and analyzes implementation methods for various signal types of shortwave transmitter driver and realization method of digital AGC/ALC; details of PPT demodulation and processing and low pass filter design are analyzed; the DSP signal processing unit is used to demodulate and reduce the PTT audio modulation signal.
作者
吴膺才
Wu Yingcai(Guangzhou Haige Communications Group Limited by Share Ltd., Guangzhou 510663, China)
出处
《无线互联科技》
2017年第7期56-58,共3页
Wireless Internet Technology
