摘要
文中论述了多采样率数字瞬时测频接收机结构。这种多采样率瞬时测频接收机可用较低采样率的模数转换器实现全宽开的软件无线电瞬时测频。其优点是硬件结构简单,对 A/D 的采样率,DSP 的运算速度要求都不高。缺点是需要很大的动态范围,需要复杂的软件,以提高信噪比、解频率模糊、解频率混叠等等。
An all digital receiver based on multirate sampling is discussed in this paper.The receiver could measure instantaneously frequency in a broad band.The hardware of the receiver is very simple.It only need low sampling rate A/D,and low-speed DSP.But it needs higher dynamic range and more complicated software.
出处
《弹箭与制导学报》
CSCD
北大核心
2003年第S6期95-97,共3页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
瞬时测频
欠采样
软件无线电
instantaneous frequency measurement
under-sampling
software radio
