CAJ | 학술논문

为进一步提高机载光电探测设备的激光测距能力，设计了基于制冷型雪崩管探测器激光接收电路。根据制冷型雪崩管探测器的特性，控制输出最佳的TEC制冷功率，降低探测器工作温度，使探测器稳定工作在最佳状态，从而减小探测器噪声电压，提高系统的探测灵敏度。实验结果表明：入射光功率在80μW加45.6 dB衰减时，探测器制冷前后对比，其探测虚警率从8.57%下降到0.49%。该探测电路应用于新型机载光电探测系统中，将极大提高其远程测距能力。
위진일보제고궤재광전탐측설비적격광측거능력，설계료기우제랭형설붕관탐측기격광접수전로。근거제랭형설붕관탐측기적특성，공제수출최가적TEC제랭공솔，강저탐측기공작온도，사탐측기은정공작재최가상태，종이감소탐측기조성전압，제고계통적탐측령민도。실험결과표명：입사광공솔재80μW가45.6 dB쇠감시，탐측기제랭전후대비，기탐측허경솔종8.57%하강도0.49%。해탐측전로응용우신형궤재광전탐측계통중，장겁대제고기원정측거능력。
In order to improve laser range ability of the pulse laser ranging finder system with the photoelectric detecting device in navigation system, a laser echo wave receiver circuit was designed based on cooling-APD (avalanche photodiode detector). According to the characteristics of cooling-APD, the most appropriate TEC (thermo electric cooler) cooling power was output to reduce temperature on APD, thus the APD ran in best condition with not only lower noise voltage but also higher detecting sensibility. Experiments show that when incident light power is 80μW with attenuation of 45.6 dB, false alarm rate declines from 8.57% to 0.49% after cooling of APD. So applying the circuit into new airborne photoelectric detecting device, it will promote sensitivity of the receiver system, and at the same time, it will help make a great improvement on the long-distance laser range ability, which can meet the new airborne photoelectric detection system of remote distance military requirements.