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一、微波雷达到激光雷达微波雷达是到目前为止使用最普遍、技术最成熟的雷达技术之一,往往也称其为电雷达或常规雷达.微波雷达是人们相当熟悉的,它已经广泛应用于军事、国民经济以及航空、航天等各个科学技术领域里.但是,微波雷达往往不能给出令人满意的速度、距离以及空间分辨率,特别是在距目标很近时(如几米至几十米之间)微波雷达往往进入盲区,完成不了某些要求,即所谓的“失灵”.即便是在常规时,由于微波的波长较长,对同一目标的信息量获得的少,影响雷达系统的灵敏度.进入二十世纪六十年代,激光器的研制获得成功.于是以激光器为辐射源的激光雷达的研究,引起许多科学家的重视.
Microwave Radar to Laser Radar Microwave radar is one of the most prevalent and most technologically sophisticated radar technologies so far, often referred to as electric radars or conventional radars. Microwave radars are quite familiar to people and have been widely used in Military, national economy, aeronautics and astronautics, etc. However, microwave radars often can not give satisfactory speed, range and spatial resolution, especially when they are close to the target (for example, a few meters to tens of meters ), Microwave radars often enter the dead zone and do not fulfill certain requirements, the so-called “failure.” Even at conventional times, due to the longer wavelength of the microwaves, the information gain on the same target is less and the sensitivity of the radar system is affected In the 1960s, the development of lasers was successful, so the research on laser radar with laser as the source of radiation attracted many scientists’ attention.