Occluded target detection of streak tube imaging lidar using image inpainting

Li, Wenhao; Guo, Shangwei; Zhai, Yuan‐Qi; Han, Song; Liu, Fei; Lai, Zhengchao

doi:10.1088/1361-6501/abd1b6

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…Cao Xinbin designed a multi-slit streak tube with an effective photocathode area of Φ 17 mm and a spatial resolution of 25 lp/mm. Otherwise, the MS-STIL by Wenhao Li et al uses a streak tube whose photocathode can accommodate 16 slits, but no specific information on spatiotemporal resolution has been reported [16]- [17]. In 2021, Shangwei Guo et al reported a multispectral polarization streak tube imaging lidar with the number of photocathode slits being 16.…”

Section: Introductionmentioning

confidence: 99%

3-D Imaging Lidar Based on Miniaturized Streak Tube

Tian¹,

Shen²,

Xue³

et al. 2023

Measurement Science Review

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Streak Tube Imaging Lidar (STIL), with advantages of non-scanning working mode, small distortion, high image framing rate, high resolution in low contrast environment, compact structure, easy miniaturization and high reliability, has a wide range of applications in military, aerospace, space confrontation, attack and defense, and marine law enforcement. This article introduces the principle of single-slit and multi-slit streak tube imaging lidar. It also introduces a single-slit general streak camera that can be used for imaging lidar. In addition, a multi-slit miniaturized streak tube with a single-lens focusing system with a total length of about 200 mm has been designed. The results of the 3D electromagnetic simulation show that the effective photocathode area of this streak tube reaches 36 mm × 36 mm, the temporal resolution is better than 50 ps, the dynamic spatial resolution can reach 12 lp/mm, and the whole photocathode can accommodate at least 19 slits in the effective detection range. The streak tube has a meshless structure, which is highly reliable. The streak tube can be used to increase the field of view of the imaging lidar system, improve the reliability, and achieve system miniaturization.

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Section: Introductionmentioning

confidence: 99%

3-D Imaging Lidar Based on Miniaturized Streak Tube

Tian¹,

Shen²,

Xue³

et al. 2023

Measurement Science Review

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“…With the development of different types of lidar, the three-dimensional (3D) lidar technique has been widely used in a variety of fields, including city construction, topographic mapping, underwater detection, and robotics [1][2][3][4][5]. Streak tube imaging lidar (STIL) has attracted great interest in recent years because of its wide field of view and fast data rate [6][7][8][9], which can be attributed to the detection system's ability to obtain hundreds of returns in one laser pulse.…”

Section: Introductionmentioning

confidence: 99%

A Calibration Method for Time Dimension and Space Dimension of Streak Tube Imaging Lidar

Chen,

Shao,

Fan

et al. 2023

Applied Sciences

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Owing to the special working systems of streak tube imaging lidar (STIL), the time and space dimensions are coupled together on the streak images. This coupling can cause measurement errors in 3D point clouds and can make measurement results more complicated to calibrate than other kinds of lidars. This paper presents a method to generate a time calibration array and an angle calibration array to separate the offset of the streak into time dimension and space dimension. The time and space information of the signal at any position on the streak image can be indexed through these two arrays. A validation experiment on aircraft was carried out, and the range error of the 3D point cloud was improved from 0.41 m to 0.27 m using the proposed calibration method. Thus, using the proposed calibration method can improve the accuracy of the point cloud produced by STIL.

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