Marine remote target signal extraction based on 128 line-array single photon LiDAR

IF 3.1 3区 物理与天体物理 Q2 INSTRUMENTS & INSTRUMENTATION Infrared Physics & Technology Pub Date : 2024-10-23 DOI:10.1016/j.infrared.2024.105592
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Abstract

LiDAR technology has garnered significant attention in recent years due to its superior directivity, high resolution, and precise 3D information acquisition capabilities, making it indispensable in navigation systems. Among its variants, single-photon LiDAR stands out for maritime applications, owing to its reduced power consumption and extended detection range. However, the high sensitivity of single-photon detectors often results in substantial noise, necessitating effective denoising before data can be utilized for identification, tracking, and other purposes. In this study, we present a novel 128-line, 1550 nm shipborne long-range single-photon LiDAR system, with data collected and analyzed in maritime environments. This system contends with challenges such as a large dynamic range, abundant noise photons, and the complexity of sea surface conditions. To address these issues, we propose an efficient and adaptive denoising algorithm based on the k-th nearest neighbor (KNN) methodology. By examining the distribution characteristics of signal and noise photons, our approach enables target extraction even under conditions of intense noise and sparse signals. Our method exhibits robust adaptability across various detection scenarios. Experimental evaluations demonstrate its efficacy, accurately identifying targets at distances of 3.2 km in clear weather and 1.6 km in foggy conditions.
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基于 128 线阵单光子激光雷达的海洋远程目标信号提取
近年来,激光雷达技术因其卓越的指向性、高分辨率和精确的三维信息采集能力而备受关注,成为导航系统中不可或缺的技术。在各种激光雷达中,单光子激光雷达因其功耗低、探测范围大而在海事应用中脱颖而出。然而,单光子探测器的高灵敏度往往会产生大量噪声,因此在将数据用于识别、跟踪和其他用途之前,必须进行有效的去噪处理。在本研究中,我们介绍了一种新型的 128 线 1550 nm 船载长距离单光子激光雷达系统,并在海洋环境中收集和分析了数据。该系统面临的挑战包括动态范围大、噪声光子多以及海面条件复杂等。为解决这些问题,我们提出了一种基于 kth 近邻(KNN)方法的高效自适应去噪算法。通过研究信号和噪声光子的分布特征,我们的方法即使在噪声强烈和信号稀疏的条件下也能提取目标。我们的方法在各种检测场景中都表现出强大的适应性。实验评估证明了该方法的有效性,在晴朗天气下可准确识别 3.2 千米远的目标,在大雾天气下可准确识别 1.6 千米远的目标。
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来源期刊
CiteScore
5.70
自引率
12.10%
发文量
400
审稿时长
67 days
期刊介绍: The Journal covers the entire field of infrared physics and technology: theory, experiment, application, devices and instrumentation. Infrared'' is defined as covering the near, mid and far infrared (terahertz) regions from 0.75um (750nm) to 1mm (300GHz.) Submissions in the 300GHz to 100GHz region may be accepted at the editors discretion if their content is relevant to shorter wavelengths. Submissions must be primarily concerned with and directly relevant to this spectral region. Its core topics can be summarized as the generation, propagation and detection, of infrared radiation; the associated optics, materials and devices; and its use in all fields of science, industry, engineering and medicine. Infrared techniques occur in many different fields, notably spectroscopy and interferometry; material characterization and processing; atmospheric physics, astronomy and space research. Scientific aspects include lasers, quantum optics, quantum electronics, image processing and semiconductor physics. Some important applications are medical diagnostics and treatment, industrial inspection and environmental monitoring.
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