一种基于小波包的多载波相位编码雷达信号

摘要

In order to enhance Multi — carrier Phase Coded ( MCPC) radar signal anti- interference ability and spectrum efficiency, based on conventional Fourier MCPC signal, an adaptive method using Wavelet Packet Transform was advanced. Wavelet Packet's orthogonality and band-limited ability obtain more flexible radar signal, improve signal' s time - frequency property and enhance anti - interference ability. The simulation indicates that the MCPC signal based on Wavelet Packet has better spectrum efficiency and ambiguity function to satisfy the design of wideband radar signal.%为了提高多载波相位编码(Multi-carrier Phase Coded,MCPC)雷达信号的抗干扰性与频谱利用率,在传统的基于傅里叶变换的MCPC的基础上,提出了一种优化方法.基于小波包变换来产生MCPC信号,利用小波包基函数的正交性和带限能力来获取更为灵活的雷达信号,从而改善信号的时频特性,提高抗干扰能力.仿真表明,小波包变换提高了 MCPC信号的频谱利用率并改善了模糊函数,适合宽带雷达信号的设计.