【摘要】 研究了一种反辐射导弹导引头中的中频数字接收机的设计和实现方案。该接收机利用带通采样对输入的中频信号进行数字化处理。提出了一种改进的分布式算法,该算法利用查找表的方式代替乘法-累加操作并能同时实现对混频信号的滤波和抽取处理。这种方法实时性强并能有效的节约芯片逻辑,可有效的应用于反辐射导弹导引头电路设计中。更多还原

【Abstract】 One design and implement method of IF digital receiver in ARM is studied.The receiver quantitates IF signal by using band-pass sampling.An improved distribute arithmetic is researched in this paper,this arithmetic substitutes look up table for multiple-add,and it can do FIR filter and extract simultaneously for mixer signal.This scheme is characterized by real time performance as well as lower chip logic cell.It can be efficiently used in anti- radiation missile seeker design.更多还原