摘要
为了解决雷达定标和通道校准,比较了高频地波雷达应答器的结构,提出了使用低中频方式设计应答器的方案。分析了雷达接收机解调信号的原理,提出了使用FSK方式标识应答器的方法。使用低中频以及FSK原理设计了应答器,验证了设计原理的正确性,并给出了进一步的改进方案。
A Low-IF responder used to scale the radar and realize the channel amplitude calibration of the HF ground wave radar is presented in this paper. When it refers to the topologies of receivers, the Low-IF receiver has better performance than the zero-IF receiver, different IF receiver topology is analyzed. FSK frequency is designed to identify the echo of the responder; the fundamental principles of it are discussed.
出处
《中国仪器仪表》
2005年第7期73-76,共4页
China Instrumentation
基金
国家“十五”计划资助项目（2001AA631050）
