摘要
本文通过对3种常见中频处理结构的分析,确定了在孔径合成式毫米波辐射成像系统中采用多相滤波I/Q解调结构。利用低通滤波结构的分析方法,通过仿真成像,设计出多相滤波结构的参数,为多相滤波结构的性能分析提出了一条新思路。
Three kinds of intermediate frequency processing schemes are studied at first. Based on this, the polyphase filtering I/Q demodulation scheme is chosen. The parameters of the polyphase filtering scheme are designed by imaging simulation using the analysis method of the low pass filtering scheme. It provides a new approach to the performance analysis of polyphase filter.
出处
《电子测量技术》
2006年第4期7-8,18,共3页
Electronic Measurement Technology
关键词
I/Q解调
多相滤波
数字接收机
孔径合成式辐射成像
I/Q demodulatiom polyphase filter
digital receiver
aperture synthetic radiometric imaging
