电-光寻的器是从第二次世界大战时发展起来的,它是制导史上最古老的方法之一。早期的电-光寻的器,主要应用于空地制导武器系统,以攻击船舰目标。这是因为寻的器采用了性能良好的图像敏感器,例如工作在可见光频谱范围的光导摄像管。另一方面,“热点”寻的器采用了由硒化铝制成的造价低廉、灵敏度高的近红外和中红外探测头,所以尽管它是非成像器件,但在对付具有强 Electro-optical finder was developed from the Second World War, which is one of the oldest methods in the history of guidance. Early electric-light finder, mainly used in ground-guided weapons systems to attack the ship’s target. This is because the finder uses a well-performing image sensor, such as a photoconductor operating in the visible spectral range. On the other hand, the “hot spot” finder uses low cost, high sensitivity near-infrared and mid-infrared probes made of aluminum selenide, so that although it is a non-imaging device,