认知雷达中时域波形合成算法研究

Study on time-domain waveform synthesis algorithms in cognitive radar

认知雷达中基于最大信噪比准则优化波形只能得出雷达信号的最优能量谱,将给定的能量谱转换成一个时域信号是认知雷达波形设计中的重点。根据发射信号的恒幅要求,提出了一种基于相位调制的恒幅时域波形合成方法,仿真结果表明,合成波形的能量谱能够较好地逼近给定的能量谱。

Only the optimal energy spectral density（ESD） of radar signals can be proposed based on themaximum signal-to-noise ratio （SNR） criterion in cognitive radar. And it is a key that synthesizing a timedomain signal with a given ESD in the field of waveform design of cognitive radar. Considering the requirements of constant amplitude of emission signal,a constant amplitude waveform synthesis method based on phase modulation is presented. Experimental results show the ESD of the synthesized signal can be a good approximation to the given ESD.