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一、引言激光是一种方向性强、能量集中和发散角小的单色光,和电磁波一样,可对之进行调制,放大和探测。此外,辐射的波束几乎是圆柱形的。例如,一个发散角为0.5毫弧度的激光束,发射到距离为2公里的目标上,激光斑直径为1米。正是这些特性,激光在制导方面应用具有优异性能。激光制导较之电视制导、红外制导和无线电制导等具有抗干扰能力强、能主动进攻和较电视制导炸弹成本低等优点。因此,国外尤其是美帝对于激光制导给予很大重视。
I. INTRODUCTION Laser is a kind of monochromatic light with strong directivity, concentrated energy and small divergence angle. Like the electromagnetic wave, the laser can be modulated, amplified and probed. In addition, the beam of radiation is almost cylindrical. For example, a laser beam with a divergence angle of 0.5 milliradian radiates to a target of 2 km at a laser spot diameter of 1 meter. It is these characteristics, the application of laser guidance has excellent performance. Compared with television guidance, infrared guidance and radio guidance, laser guidance has the advantages of strong anti-interference ability, active attack and low cost compared with TV guidance bombs. Therefore, foreign countries, especially the US imperialism, attach great importance to laser guidance.