摘要
脉冲信号的时宽限制了采样点的个数,使得短时信号的频率测量精度无法提高。提出了一种短时信号精测频方法,该方法能显著提高测频精度,从而给雷达信号的分选、识别及特定发射机识别(SEI)提供了很好的稳定度。
The time width of pulse signal limits the number of sampling points,which makes the frequency measurement accuracy of short-time signal unable to be improved.This paper presents a kind of accurate frequency measurement method for short-time signal,this method can obviously improves the frequency measurement accuracy,accordingly provides good stability for the radar signal sorting,identification and specific emitter identification（SEI）.
出处
《舰船电子对抗》
2016年第3期71-73,共3页
Shipboard Electronic Countermeasure
关键词
频率测量
窗函数
短时信号
幅频特性
frequency measurement
window function
short-time signal
amplitude-frequency characteristic
