适用于抗高频突发性冲击干扰的有效算法

提出了一种抗突发性冲击干扰的处理算法。该算法主要用于抑制高频雷达探测飞机目标时随机出现的冲击干扰对目标谱线产生的遮盖。由于时域海面回波一般情况下绝对占优 ,因此 ,该算法利用海杂波谱分布结构上的特点 ,通过常规的频域处理滤除海杂波谱 ,从而使滤除海杂波并反变换到时域的信号中突发冲击干扰能够占优 ,进而利用野值判别与剔除方法将幅度较突出的冲击干扰予以剔除 ,达到抑制突发冲击干扰的目的 ,使雷达在突发干扰情况下也能有效地发现和跟踪目标

An Effective Anti-Impulsive-Disturbance Algorithm for High Frequency Radar

This paper presents an effective processing algorithm against impulsive disturbances. It is mainly used to reduce the masking action of the randomly occurred impulsive disturbances on aircraft target spectra during HF radar detection. Since the sea clutter in time domain is dominant with large amplitude, this algorithm has to extract the spectra of sea clutter in frequency domain and cancel them by using the constant distribution of sea clutter spectra. Further, the impulsive disturbances would be dominant in the time domain signals by inverse Fourier transform after the cancellation of sea clutter. These disturbances with large amplitude, compared with the background noise and target echoes, may be eliminated by means of wild value judgment and elimination. By effective elimination of impulsive disturbances, radar can detect and track targets well in environment of randomly-occurred impulsive disturbances.