Airborne Near Infrared Three-Dimensional Ghost Imaging LiDAR via Sparsity Constraint

Abstract

Three-dimensional ghost imaging LiDAR via sparsity constraint (3D GISC LiDAR), as a staring imaging method, can obtain both the range information and spatial distribution of a remote target with a single-pixel time-resolved detector. However, previous demonstrations mainly focused on the relatively static scene in visible light. Here we propose an airborne near infrared 3D GISC LiDAR system and airborne high-resolution imaging is implemented. Experimental results show that an image with 0.48 m horizontal resolution as well as 0.5 m range resolution at approximately 1.04 km height can be achieved. Some considerations on the improvement of this LiDAR system are also discussed.

A Review of Ghost Imaging via Sparsity Constraints

“…where µ is the unknow constant speed of the target, A(µ) is the measurement matrix dependent on the relative speed µ of the target. With the techniques mentioned above, an airborne 3D GISC LiDAR image with 0.48 m horizontal resolution as well as 0.5 m range resolution at approximately 1.04 km height is experimentally demonstrated in 2016 [57] (Figure 2). As shown in Figure 2c, this system has the capability of motion deblurring and it realizes successful 3D reconstruction on a high-speed platform.…”

“…As shown in Figure 2c, this system has the capability of motion deblurring and it realizes successful 3D reconstruction on a high-speed platform. In the past decade, GISC LiDAR has experienced leapfrogging development from principle demonstration, static platforms and static targets to moving platforms and moving targets [19,57], and is promising to be applied in many fields such as high resolution airborne remote sensing, underwater detection and imaging, traffic monitoring, and so on. However, further theoretical and experimental researches in many aspects still need to be performed.…”

“…The result of the 3D GISC LiDAR reconstruction, the color bar denotes the distance to the GISC LiDAR: (a) the airborne 3D GISC LiDAR system, (b) a photo of the target, (c) the structured 3D GISC reconstruction[57].…”

High-Visibility Pseudothermal Light Source Based on a Cr4+ : YAG Passively Q-Switched Single-Longitudinal-Mode Laser

“…[4] and again attracts people attention recently. e development of the airborne three-dimensional ghost imaging LiDAR imaging motional targets require high energy, high visibility and brightness, and high-stability pseudothermal light source to avoid the attenuation during the propagation, the influence from the background radiation, and the unstable air environment [10][11][12][13]. erefore, nanosecond laser pulse with high energy becomes an ideal choice.…”

Up-Conversion Imaging Processing With Field-of-View and Edge Enhancement

“…Optical imaging systems using NIR illumination have a broad application in biomedicine, surveillance and military [1][2][3]. The wavelength around 1550nm, an eye-safe spectral region, becomes special interests in lidar imaging systems [4]. However, Charge-coupled devices (CCDs) in this spectral domain, commonly based on InGaAs material, suffer from lower efficiency and speed, higher readout noise and more rigorous cooling attachment than CCD in visible spectrum based on silicon.…”