新型电离层探测仪发射系统设计∗

摘要

In order to implement the whole system great gain performance in the high frequency band, achieve a variety of encoding detection system and use the same antenna to transmit and receive signal,a novel transmitting system for Wuhan University ionosonde was introduced. According to the techniques of software radio and modular design,the system was designed and achieved. The transmitting system consists of waveform produced module,power amplifier module and transceiver switch module. Experiments proved that the system can offer various types of detecting waveform,obtain abundant result of detecting ionosphere in real-time and make the sounding system more portable and stable in the daily detection.%为了实现整机系统通带高增益性能、兼容多种探测编码体制，同时采用一副天线进行收发探测，武汉大学研制的新型电离层探测仪的发射系统采用了软件无线电思想和模块化设计，系统由波形产生模块、功放单元模块和收发开关模块构成。实验结果表明，该发射系统在日常探测中实现了多种电离层探测方式，在实时获取丰富的电离层探测结果同时，方便携带且工作性能稳定。