CAJ | 학술논문

在深空或空间小目标的探测中，需要利用脉冲式激光雷达测量与目标之间的距离。当距离目标由几十千米到几十米范围变化时，探测器接收到的光通量动态范围达60 dB以上。要确保在整个量程范围内信号不饱和，需要采用复合型的自动增益控制技术。除了采用电子学的自动增益方法外，提出了一种自动调整接收光学通光口径的方式，通过对直流电机驱动的电动镜头光圈调整环的逐级调整，实现各级之间2倍光通量的变化。设计并实现了光圈、焦距、聚焦均由直流电机控制的电动镜头的驱动及控制电路，并搭建光路对孔径光阑进行标定，结果表明可以分为8级，且具有很好的重复性，使得全量程范围内准确度达厘米精度测距功能的实现成为可能。
재심공혹공간소목표적탐측중，수요이용맥충식격광뢰체측량여목표지간적거리。당거리목표유궤십천미도궤십미범위변화시，탐측기접수도적광통량동태범위체60 dB이상。요학보재정개량정범위내신호불포화，수요채용복합형적자동증익공제기술。제료채용전자학적자동증익방법외，제출료일충자동조정접수광학통광구경적방식，통과대직류전궤구동적전동경두광권조정배적축급조정，실현각급지간2배광통량적변화。설계병실현료광권、초거、취초균유직류전궤공제적전동경두적구동급공제전로，병탑건광로대공경광란진행표정，결과표명가이분위8급，차구유흔호적중복성，사득전량정범위내준학도체전미정도측거공능적실현성위가능。
It was necessary to use the Pulsed Laser Radar to measure the distance with the deep space target or space small target. When the distance varied from tens of kilometers to tens meters, the energy range that photoelectric detector received reaches above 60 dB. To assure the detector not saturated, the multiplex AGC (Automatic Gain Control) technology was required. Except for the electronics method, a method of adjusting aperture of receive optical automatically was put forward, which made the luminous flux of detector changes 2 times by adjustment of Motorized lens' aperture regulation ring step by step, which was driven by direct current motor. The driven and control circuits of motorized lens were designed and realized to adjust aperture, zoom and focusing through FPGA software. Optical path was established to calibrate the aperture. The result showed that aperture can be divided into 8 levels, which have good repetition characteristic. This make it is impossible to realize laser ranging with centimeter grade precision in the whole detecting field.