CAJ | 학술논문

激光高度计的探测视场角是影响系统性能的一个重要参数,论述了视场角对系统探测性能的影响.受到回波杂散光和探测器响应不均匀性的影响,激光高度计的探测视场会随回波能量的改变而发生变化,而回波能量随探测距离发生变化.本文提出了测试激光高度计整机探测视场角的方法,并且模拟了系统在实际工作状态时的情况;对于有近程延时保护的系统,给出了测试的解决方案.对设计视场角为1.5mrad的激光高度计进行了测试,调节模拟回波信号能量至5×10~(-8)W,模拟其工作距离为200km时的工作状态,得出系统的探测视场角为1.46mrad.
격광고도계적탐측시장각시영향계통성능적일개중요삼수,논술료시장각대계통탐측성능적영향.수도회파잡산광화탐측기향응불균균성적영향,격광고도계적탐측시장회수회파능량적개변이발생변화,이회파능량수탐측거리발생변화.본문제출료측시격광고도계정궤탐측시장각적방법,병차모의료계통재실제공작상태시적정황;대우유근정연시보호적계통,급출료측시적해결방안.대설계시장각위1.5mrad적격광고도계진행료측시,조절모의회파신호능량지5×10~(-8)W,모의기공작거리위200km시적공작상태,득출계통적탐측시장각위1.46mrad.
Laser altimeter' s field of view (FOV) is an important parameter affecting system' s performance.The effect of the field of view on the detection performance of system was discussed.Because of the straylight and the sensor' s nonunifor-mity, the FOV changes as the echo' s power changes.At the same time the echo' s power will be varied with the detecting distance.The testing way of detecting FOV was put forward, and the factual working status was simulated.For system with inner short-range delay protecting circuit, a new method was brought forward.A laser altimeter with the FOV of 1.5mrad was tested.The FOV of the system is 1.46mrad when its detecting distance is 200km and the echo's power is 5 ×10~(-8)W.