Radar Signal Recognition by CWD Picture Features

Erfan Tahbaz Tavakoli, Abolfazl Falahati

DCCS Laboratory, Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran.

DOI: 10.4236/ijcns.2012.54031                

Abstract

In this paper a system for automatic recognition of radar waveform is introduced. This technique is used in many spectrum management, surveillance, and cognitive radio and radar applications. For instance the transmitted radar signal is coded into six codes based on pulse compression waveform such as linear frequency modulation (LFM), Frank code, P1, P2, P3 and P4 codes, the latter four are poly phase codes. The classification system is based on drawing Choi Willliams Distribution (CWD) picture and extracting features from it. In this study, various new types of features are extracted from CWD picture and then a pattern recognition method is used to recognize the spectrum. In fact, signals from CWD picture are defined using biometric techniques. We also employ false reject rate (FRR) and false accept rate (FAR) which are two types of fault measurement criteria that are deploy in biometric papers. Fairly good results are obtained for recognition of Signal to Noise Ratio (-11 dB).

Keywords

Pulse Compression; Radar; Spectrum Management; Signal Recognition

Conflicts of Interest

The authors declare no conflicts of interest.

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