期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：11
页码：6424
出版社：S&S Publications
摘要：In today EW scenario the Radar features are getting advanced day by day. To intercept and analyse signalscoming from such Radar, ESM receivers also should have modern and advanced features and techniques. There aremany ESM Receivers developed/being developed based on Analog and Digital techniques to measure the interceptedRadar signal parameters. Frequency of the signal is one of the important basic parameter measured by ESM Receiver.Better frequency resolution and accuracy are desirable specifications of the receiver. Systems based on Digital Receiverare sampled signal systems. By means of the Fast Fourier Transform (FFT) algorithm, Frequencies of interceptedsignals can be estimated from their locations in the discrete spectrum with a resolution depending on the number ofpoints of FFT. But computational or other limitations often restrict the number of points, which correspondinglyrestricts the resolution of the estimate provided by the FFT. This paper brings out implementation of interpolationalgorithm in FPGA for fine Frequency accuracy without increasing the FFT size.
关键词：EW-Electronics Warfare; ESM- Electronic Support Measure; DSP-Digital Signal Processing; FFT-Fast;Fourier Transform; FPGA- Field Programmable Gate Array; LSA-Logic State Analyser; MATLAB-Matrix Laboratory;VHDL- VASIC High Descriptive Language
