Design and Performance Analysis of Aircraft Wake Vortex Coherent Laser Detection System

Abstract

1 脉冲功率激光技术国家重点实验室(电子工程学院), 安徽 合肥 230037 2 电子制约技术安徽省重点实验室, 安徽 合肥 230037 摘要 为保证飞行安全， 并尽可能地提高机场跑道容量， 对飞机尾涡相干激光探测系统进行了设计。从飞机尾涡激 光探测的总体要求出发， 提出相干激光探测系统结构， 同时针对激光光源参数以及平衡探测光路结构进行设计， 给出 整个系统的设计参数。通过对所设计系统的探测信噪比以及测速精度的仿真分析表明， 所设计的飞机尾涡相干激光 探测系统能够满足尾涡探测的需求， 当脉冲能量达到 25 mJ 以上时， 雷达在探测距离 7 km 内的探测信噪比大于 3 dB； 在 2 km 内测速精度优于 0.2 m/s。 关键词 飞机尾涡; 激光雷达; 相干探测; 飞行安全; 跑道容量 中图分类号 V328.3 文献标识码 AAbstract In order to ensure flight safety and to improve the capability of the airport runway as far as possible, an aircraft wake vortex coherent laser detection system is designed. Begin with the requirements of wake vortex laser detection, the structure of the system is proposed. The parameters of the laser source and the optical path of the double balance detection are designed at the same time. The performance simulation proves that this detection system can meet the detection requirements. When the output energy is higher than 25 mJ, the detection signal-to-noise-ratio (SNR) can be up to 3 dB at the distance of 7 km and the detection accuracy is better than 0.2 m/s within 2 km.