一种基于STFT的欠采样测频技术  

A Sub-sampling Frequency Measurement Technique Based on STFT

作　　者：吕昊[1] 罗明[1] 

机构地区：[1]西安电子科技大学,西安710071

出　　处：《舰船电子对抗》2016年第1期15-20,共6页Shipboard Electronic Countermeasure

摘　　要：在现代电子战中,数字测频技术的发展至关重要。对短时傅里叶变换(STFT)数字信道化技术进行了原理分析和理论仿真,然后研究了欠采样技术,并提出了将STFT信道化与欠采样结合使用的测频方法,并以正交双通道延迟解模糊为例,仿真验证方法的可行性。In modern electronic warfare, the development of digital frequency measurement tecnmque is very important. This paper performs the principle analysis and theory simulation to short time Fourier transform （STFT） digital channelization measurement technique,then studies the sub-sampiing technique,and puts forward the frequency measurement method combining STFT channelization technique with subsampling technique, and taking orthogonal dual-channel delay ambiguity resolution as an example,validates the feasibility of the method through simulation.

关 键 词：测频 短时傅里叶变换 数字信道化技术 欠采样 

分 类 号：TN971.1[电子电信—信号与信息处理]