CAJ | 학술논문

针对空间应用背景对激光测距系统“宽测程、高精度、实时测量”的要求，使用相位式激光测距法中分散的直接法设计了一种激光测距方案，其理论测程可以达到10 km，测距精度可以达到0.1 m。对激光器和窄带滤光片提出了技术指标要求，对雪崩光电二极管(APD)进行了选型，并通过对空间环境背景噪声的分析和对空间非合作目标测程方程的分析验证了技术指标选择和APD选型的合理性。实验结果表明：该系统最大测距误差为8.71 cm，符合“测距精度优于0.1 m”的技术指标要求，同时具有较高的动态性能，测距时间不超过1 ms。此外，系统具有较小的整体功率和质量，分别为13.29 W和693 g，可作为天基应用的有效载荷。
침대공간응용배경대격광측거계통“관측정、고정도、실시측량”적요구，사용상위식격광측거법중분산적직접법설계료일충격광측거방안，기이론측정가이체도10 km，측거정도가이체도0.1 m。대격광기화착대려광편제출료기술지표요구，대설붕광전이겁관(APD)진행료선형，병통과대공간배경배경조성적분석화대공간비합작목표측정방정적분석험증료기술지표선택화APD선형적합이성。실험결과표명：해계통최대측거오차위8.71 cm，부합“측거정도우우0.1 m”적기술지표요구，동시구유교고적동태성능，측거시간불초과1 ms。차외，계통구유교소적정체공솔화질량，분별위13.29 W화693 g，가작위천기응용적유효재하。
In response to the requirements of "wide measurement range, high accuracy, real-time measurement" to laser ranging system in aerospace applications, a laser ranging scheme was designed by using dispersed direct phase ranging method. The theoretical measurement range can reach 10 km and the degree of ranging accuracy is within 0.1 m. The laser system, narrow-band filter and the APD photodiode were particularly required by analyzing the space background noise (including space radiation, earth radiation and solar radiation) and range equation for non-cooperative space targets. The experimental results indicate that the maximum ranging error of the system is 8.71 cm, and the system has high dynamic performance with the ranging time less than 1 ms. Moreover, the power consumption and quality of the prototype is small(13.29 W and 693 g respectively), which makes the system a suitable payload for space-based applications.