数字混沌激光雷达

Digital Chaos LiDAR

混沌激光雷达具有分辨率高、抗干扰和隐蔽性强的优点,然而受限于混沌光源的功率、线性探测器的灵敏度以及硬件带宽,其在远距离探测方面存在瓶颈。为解决这一问题,该文提出了数字混沌激光雷达(digital chaos LiDAR)的概念,并进行了理论分析与仿真验证。通过蒙特卡洛(Monte Carlo)仿真,该文研究了连续混沌激光雷达(continuous-wave chaos LiDAR)、脉冲混沌激光雷达(pulsed chaos LiDAR)与数字混沌激光雷达的探测概率、虚警概率与探测距离。仿真结果表明,在探测概率大于95%,虚警概率小于5%的置信区间内,数字混沌激光雷达的探测距离相比连续混沌激光雷达与脉冲混沌激光雷达分别提高了约35倍与8倍。得益于单光子探测器的超高灵敏度与数字化输出,数字混沌激光雷达有望在远距离目标探测成像方面获得广泛应用。

Chaos LiDAR has attracted significant attention due to its high resolution,inherent anti-interference capability,and stealth characteristics.However,the performance of chaos LiDAR in long-range target detection and imaging is quite limited by the power of chaotic light sources,sensitivity of linear detectors,and hardware bandwidth.To overcome the bottleneck of chaos LiDAR,this paper proposes the concept of digital chaos LiDAR and conducts theoretical analysis and simulation verification.Through Monte Carlo simulation,this paper studied the detection probability,false probability,and detection range of continuous-wave chaos LiDAR,pulsed chaos LiDAR,and digital chaos LiDAR.The simulation results show that,within the confidence interval where the detection probability is greater than 95%and the false alarm probability is less than 5%,the detection range of digital chaos LiDAR is approximately 35 times and 8 times higher than that of continuous-wave chaos LiDAR and pulsed chaos LiDAR,respectively.With the advantages of ultra-high sensitivity of single-photon detectors and digital output,digital chaos LiDAR is expected to be widely used in the field of long-range target detection and imaging.