针对机载雷达高重频工作模式所面临的严重距离模糊问题,提出了一种基于脉间调相的高重频抗距离模糊波形。该波形通过在脉间引入二次型相位编码,使得脉冲多普勒处理之后,不同模糊次数的回波被搬移到不同的多普勒区域,实现在多普勒域解距离模糊。通过对信号处理过程的推导说明了所研究波形抗距离模糊的机理,并通过仿真验证了该波形抗距离模糊的有效性。

A new high pulse repetition frequency (HPRF) signal to mitigate the range ambiguity problem faced by the traditional HPRF signal in airborne radar is proposed in this paper. By introducing quadratic interpulse phase coding, the new HPRF signal can move target echoes with different range ambiguity numbers to different Doppler areas after pulse Doppler processing. The target’s range ambiguity can be resolved in Doppler domain. By deriving the signal processing process, the principle of the proposed signal in resolving range ambiguity is shown. The range ambiguity mitigation effect is verified by the simulation.

TN911.7