激光引信抗超低空地杂波干扰技术研究

Study on Anti-ground-clutter Techniques for Laser Fuze at Extreme Low-altitude

研究近距地物激光散射特性。叙述了激光引信地杂波干扰成因以及几类地物反射率的一般规律。对树木的激光后向散射信号特性进行了实验研究,并从回波信号幅度、波形和距离效应方面进行对比分析,获得一些实用的结论。为了定量研究树木散射信号特性,还建立了树木散射信号的数学模型。在对地杂波的干扰特征进行归纳后,综述了激光引信抗地杂波干扰技术。综合运用这些技术可以获得良好的抗地杂波干扰效果。文末还简述了激光引信的技术发展。

In this paper the characteristics of laser scattering from ground objects, the cause of ground clutter interference on the laser fuze, and general law of reflectivity of some kinds of ground objects are discussed. We have conducted experimental study on the characteristics of laser backscatter from some kinds of trees, and comparative analysis on the amplitude, waveforms, and distance effect of the echo signal. Some practical conclusions are reached. A mathematical model of scattering from trees is built up to quantitatively investigate the scattering characteristics of the trees. Based on the interference characteristics of ground clutter, the anti-ground-clutter technique for laser fuze are summarized. Combined application of these techniques can achieve satisfactory results. The development of laser fuze technology is also briefly described.