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针对常规低分辨雷达无法直接在距离和方位上分辨编队目标的缺陷 ,分析了编队目标间距引起目标间多普勒频率的差异和目标多普勒频率的变化规律 ,探讨了用时频分布分辨目标的可能性。提出了一种基于编队目标回波时频分布生成的图像 ,利用图像描述技术 ,实现编队目标架次检测的方法。实测目标回波数据实验结果表明 ,该方法能可靠检测目标架数 ,具有一定的抗噪声和抗干扰能力 ,同时计算量小 ,易于实时实现 ,优于常规Radon变换方法
Aiming at the defect that conventional low-resolution radar can not distinguish formation target directly in distance and azimuth, the variation of target Doppler frequency and target Doppler frequency caused by formation target spacing are analyzed. possibility. A method based on images generated by time-frequency distribution of formation target echoes and using image description technique is proposed to realize the detection of formation targets. Experimental results of the measured target echo data show that this method can reliably detect the target frame number, has a certain anti-noise and anti-interference ability, while the amount of calculation is small, easy to real-time, better than the conventional Radon transform method