Open AccessResearch on modulation recognition of Communication Radar Based on spread spectrum technology
Author(s) -
Dujiya Bao,
Hua Guo,
Zhang Wenxia,
Xinxin Bao
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1684/1/012093
Subject(s) - radar , direct sequence spread spectrum , computer science , signal (programming language) , spread spectrum , modulation (music) , frequency modulation , artificial intelligence , pulse doppler radar , pattern recognition (psychology) , electronic engineering , speech recognition , telecommunications , engineering , radar imaging , acoustics , channel (broadcasting) , radio frequency , physics , programming language
Aiming at the problem that the traditional radar signal recognition method needs to be completed under the noiseless condition, which leads to the low recognition accuracy of low SNR signal, the modulation recognition method of communication radar signal based on spread spectrum technology is studied. The phase difference and instantaneous frequency characteristics of communication radar signal are extracted after the spread spectrum processing of communication radar signal with direct sequence spread spectrum. The training sample is used to train PNN neural network, and the modulation recognition of communication radar signal is completed. Simulation experiments under different parameters show that the recognition method based on spread spectrum technology has an effective recognition rate higher than 90% for low SNR signal, which is superior to the traditional method and can be applied in practice.