Research On The Waveform Design And Signal Processing Of Multi-Carrier Phase Coded

Multi-carrier Phase Coded signal is a kind of signal with high range resolution,low interception and good anti-jamming performance.Therefore,it is necessary to study and analyze the system performance of this signal.In this paper,the signal characteristic analysis and signal processing of multi carrier frequency phase coded signal are studied.The theory of multi carrier frequency phase coded signal is systematically analyzed.The signal form,phase coding sequence,ambiguity function and envelope peak to peak ratio of multi carrier frequency phase coded signal are theoretically deduced.At the same time,various characteristics of multi carrier frequency phase coded signals,including autocorrelation characteristics and envelope peak to average ratio(PAPR)characteristics,are simulated and analyzed.The parameter design process of multi carrier frequency phase coded signals is summarized.The processing methods of multi carrier frequency phase coded signals are studied.The processing results of different carrier numbers,different carrier frequencies and different frequency domain weighting methods are compared The impact of.The autocorrelation performance and envelope PAPR performance of multi carrier frequency phase coded signals are studied theoretically.The variable physical quantities of the signal,including the change of carrier frequency number and symbol number,and the influence of frequency domain weighting on the signal autocorrelation performance and envelope peak to average ratio(PAPR)are analyzed by simulation.At the same time,the low interception performance of the signal and its influencing factors are analyzed theoretically.From the angle of the interceptor,the time-frequency information of the intercepted signal,that is,the short-time Fourier transform result of the signal is analyzed,and the low interception performance of the radar transmitting signal can also be analyzed when a series of information of the receiver cannot be obtained.This paper studies the principle of digital radio frequency memory interference,and gives its main characteristics.It analyzes the anti-interference performance of multi carrier frequency phase coded signal under digital radio frequency storage interference.Under certain signal-to-noise ratio and signal to interference ratio,the signal designed in this paper is simulated to study its anti-interference performance against digital radio frequency storage interference.At the same time,the anti-jamming performance of multi carrier frequency phase coded signal is simulated and analyzed under the condition that jamming forwarding is active jamming.Furthermore,an anti-jamming waveform design method is studied,which is based on the cyclic complementary P4 code.It has good anti-jamming performance for active repeater jamming.