Intrapulse Modulation Recognition of Radar Signals Based on Ordered Time-Frequency Curve
Guobing Hu · Telecommunication Engineering · 2012
An intrapulse modulation recognition method is proposed based on the properties of the ordered time frequency curve(TFC).The algorithm is divided into three steps: firstly,linear frequency modulation(LFM) signals can be recognized by testing of the character of the alternative regression for the TFC;and then,the normal signals can be identified by the normality test of the RANKIT of others modulation signals;thirdly,the binary phase shift keying(BPSK) signals and quadrate phase shift keying(QPSK) signals can be classified by the normality test of the RANKIT of the squared signals.Simulation results show that the proposed method is effective to recognize the common intrapulse modulation type signals at a lower signal-to-noise ratio(SNR) without a priori knowledge.