Signal extraction algorithm of Gm-APD lidar with low SNR return

Ma, Longhua; Sun, Jianfeng; Jiang, Peng; Liu, Di; Zhou, Xin; Wang, Qi

doi:10.1016/j.ijleo.2020.164340

Cited by 13 publications

(6 citation statements)

References 8 publications

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“…3.1. Evaluation Index K, the target recovering degree, was adopted in this study [30] as an objective evaluation indicator. The PSNR was used to evaluate the denoising performance of the algorithm cited in this paper and the range image of the algorithm proposed.…”

Section: Evaluation Index and Simulation Verificationmentioning

confidence: 99%

Fractional-Order Total Variation Geiger-Mode Avalanche Photodiode Lidar Range-Image Denoising Algorithm Based on Spatial Kernel Function and Range Kernel Function

Wei,

Wang,

Xie

et al. 2023

Fractal Fract

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A Geiger-mode avalanche photodiode (GM-APD) laser radar range image has much noise when the signal-to-background ratios (SBRs) are low, making it difficult to recover the real target scene. In this paper, based on the GM-APD lidar denoising model of fractional-order total variation (FOTV), the spatial relationship and similarity relationship between pixels are obtained by using a spatial kernel function and range kernel function to optimize the fractional differential operator, and a new FOTV GM-APD lidar range-image denoising algorithm is designed. The lost information and range anomalous noise are suppressed while the target details and contour information are preserved. The Monte Carlo simulation and experimental results show that, under the same SBRs and statistical frame number, the proposed algorithm improves the target restoration degree by at least 5.11% and the peak signal-to-noise ratio (PSNR) by at least 24.6%. The proposed approach can accomplish the denoising of GM-APD lidar range images when SBRs are low.

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Section: Evaluation Index and Simulation Verificationmentioning

confidence: 99%

Fractional-Order Total Variation Geiger-Mode Avalanche Photodiode Lidar Range-Image Denoising Algorithm Based on Spatial Kernel Function and Range Kernel Function

Wei,

Wang,

Xie

et al. 2023

Fractal Fract

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show abstract

“…When the APD works at the Geiger‐mode, it has a particularly high capability to detect photons and a single photon can trigger an avalanche that is self‐sustaining to produce a digital pulse 122–124 . Therefore, the Geiger‐mode APD has high sensitivity, low energy requirements of the laser pulse, and a compact size for system integration 52,68,125,126 . Moreover, because the output signal of the Geiger‐mode APD is a digital pulse, the readout circuitry required no amplification and no analog processing module.…”

Section: Pulsed‐laser Three‐dimensional Imaging Flash Lidar Using Apd Arrays Based On the Geiger‐modementioning

confidence: 99%

“…[122][123][124] Therefore, the Geiger-mode APD has high sensitivity, low energy requirements of the laser pulse, and a compact size for system integration. 52,68,125,126 Moreover, because the output signal of the Geiger-mode APD is a digital pulse, the readout circuitry required no amplification and no analog processing module. Additionally, the readout noise can be effectively eliminated.…”

Section: Pulsed-laser Three-dimensional Imaging Flash Lidar Using Apd...mentioning

confidence: 99%

Development of pulsed‐laser three‐dimensional imaging flash lidar using APD arrays

Hao

Tao

Cao

et al. 2021

Micro & Optical Tech Letters

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Over the past two decades, pulsed‐laser three‐dimensional imaging flash lidar using avalanche photodiode (APD) arrays has attracted extensive research interest due to its great potential for both military and civilian applications. This invited paper gives a brief review of the state‐of‐art pulsed‐laser three‐dimensional imaging flash lidar using APD arrays. The principle of the pulsed‐laser three‐dimensional imaging flash lidar using APD arrays is briefly introduced. According to the working mode of the APD arrays, we divide the current flash lidar into two types: the linear‐mode and the Geiger‐mode. The performances of the pulsed‐laser three‐dimensional imaging flash lidar using APD arrays working at linear‐mode and the Geiger‐mode are summarized. The opportunities and challenges in this field are also discussed. This review is expected to provide a snapshot of the current landscape of flash lidar using APD arrays to attract more interest in this field.

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“…The laser wavelength is 1570nm, the pulse energy is 2mJ, the pulse width is less than 10ns, and the measurement distance can reach 3.9 kilometers. Later, in 2020, the team's Ma Le used a 64×64 pixel Gm-APD array LiDAR device to propose the bump hunting combination algorithm to achieve effective noise suppression and image recovery 12 .…”

Section: Introductionmentioning

confidence: 99%

Experimental research of 256×128 InGaAs Gm-APD arrays laser imaging

Yang,

Ma,

Sun

et al. 2024

Sixth Conference on Frontiers in Optical Imaging and Technology: Novel Imaging Systems

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In recent years, the array Geiger-mode avalanche photodiode (Gm-APD) has become a research hotspot in the world due to its advantages of detection sensitivity, spatial resolution and range resolution. A set of 1064 nm laser active imaging experiment platform is built with the core device of 256×128 pixel domestic self-developed InGaAs material Gm-APD. The data of 500m and 350m targets in external field are obtained, and the three-dimensional distance image, intensity image and photon counting image are reconstructed by using single photon echo signal detection method. Through the experiment, the range resolution of the detector is 0.3m, and the contrast of the photon count intensity image are larger than the intensity image. It is proved that the self-develop array Gm-APD detector with 1064nm lase has good performance, and it can demonstrate the field laser active imaging function, which lays a good research foundation for future practical application.

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Signal extraction algorithm of Gm-APD lidar with low SNR return

Cited by 13 publications

References 8 publications

Fractional-Order Total Variation Geiger-Mode Avalanche Photodiode Lidar Range-Image Denoising Algorithm Based on Spatial Kernel Function and Range Kernel Function

Fractional-Order Total Variation Geiger-Mode Avalanche Photodiode Lidar Range-Image Denoising Algorithm Based on Spatial Kernel Function and Range Kernel Function

Development of pulsed‐laser three‐dimensional imaging flash lidar using APD arrays

Experimental research of 256×128 InGaAs Gm-APD arrays laser imaging

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