Ghost image in enhanced self-heterodyne synthetic aperture imaging ladar

Zhang, Guo; Sun, Jianfeng; Zhou, Yu; Lü, Zhiyong; Li, Guangyuan; Xu, Mengmeng; Zhang, Bo; Lao, Chenzhe; He, Hongyu

doi:10.1016/j.optcom.2017.10.079

Cited by 8 publications

(2 citation statements)

References 21 publications

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“…Types Solution References mutual interference pulsed ToF random pulse trains [35] generate random sequence of double pulses by binary chaos generator [42] constitute CPPM by algorithm to generate random sequence [33] generate random signal sequence by LED+CMOS SPAD [36,[54][55][56] develop a multi-pulse detection algorithm [57] FMCW the interference signal can be extracted from the low-pass filter with wavelet denoising [58] few-mode frequency-modulated LiDAR receivers [40] frequency-Hopping modulator [39] RMCW use ASE laser to generate chaos signals [41] random signals generated by external optical perturbation [43][44][45][46][47][48][49] ghost image optic rotate the angle of the polarizing beam splitter to reduce the reflections of mirrors [52] adjust optical polarization to defocus unwanted stray light reflections [59][60][61] add anti-reflection mode and filter to suppress ghost reflection [62] enhance self-heterodyne synthetic aperture Imaging radar (Coherent Radar Architecture) [63] a higher gain length and a more powerful output from a single diode. However, the active region's vertical thickness is small compared to the horizontal width due to the designed geometry, producing an asymmetric elliptical beam profile rather than an ideal circular Gaussian beam.…”

Section: Challengesmentioning

confidence: 99%

Recent Advances in Light Detection and Ranging: Optical Modulation Solutions and Novel Nanotechnologies

Chen,

Miao,

Hong

et al. 2023

Adv Quantum Tech

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Light detection and ranging (LiDAR) sensor is widely recognized as a critical component for accurate perception. However, there are a host of challenges that impede their performance, including low spatial resolution, high costs, large size, low reliability, and susceptibility to interference. It is challenging to overcome these issues using a single LiDAR module, necessitating the need for a review of current LiDAR technologies. The paper commences by introducing the fundamental principles of various laser rangefinders and discussing the optical modulation technologies used to prevent interference and ghost images. Next, the paper delves into the latest developments in laser technology, with a focus on enhancing the switching rate, compliance with eye safety regulations, miniaturization, and improving stability. One highly promising innovation is the photonic crystal surface emitting laser (PCSEL), a novel light source that boasts high‐speed, small divergence angles, and high‐power output. Finally, the paper discusses the advancements made in non‐solid‐state scanning and solid‐state scanning, such as improving stability, increasing scanning angles, and optimizing the manufacturing of mechanical and micro‐electromechanical systems (MEMS). Additionally, the paper highlights the recent advancements in nanotechnology, specifically metasurface technology, which offers superior capabilities such as beam deflection, enhanced field‐of‐view (FOV), and dynamic modulation.

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Section: Challengesmentioning

confidence: 99%

Recent Advances in Light Detection and Ranging: Optical Modulation Solutions and Novel Nanotechnologies

Chen,

Miao,

Hong

et al. 2023

Adv Quantum Tech

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show abstract

“…Ghost imaging (GI), as a non-local imaging technique that retrieves the imaging object by quantum entanglement, was first performed in 1995 [1,2]. Since then, GI has been reported continuously due to its advantages in spatial resolution and strong anti-interference [3][4][5][6][7][8]. In the early study of GI, the beams usually propagated through the transmission media without considering and eliminating the environmental disturbances, which results in the poor quality of reconstruction.…”

Section: Introductionmentioning

confidence: 99%

Ghost imaging in a Rician fading channel with additive random noise

Wu¹,

Tan²,

Huang³

et al. 2020

J. Opt.

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The stability of the spatial information transmission in communication is very important, and the ghost imaging mechanism has shown advantages in resistance to the external interference factors and in the low-light detection. A Rician fading channel typically describes the environment with a direct path and an infinite number of multi-path scatters, and the channel quality could be directly reflected by the estimation of the Rician factor. We propose a theoretical model of ghost imaging in a Rician fading channel with additive random noise. By calculating the peak signal-to-noise ratio and the resolution, the impact of the path loss and the Rician distribution on the imaging quality are numerically investigated. In addition, the comparative studies between the traditional non-correlated imaging and ghost imaging under the same conditions are also discussed, and it is shown that ghost imaging technique presents higher robustness and longer transmission distance. Our results establish a link between communication channels and ghost imaging, and provide reference and guidance for the spatial information transmission through a Rician fading channel.

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Neural network based synthetic aperture ladar imaging through marine atmosphere

Huang

2020

Optik

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Ghost image in enhanced self-heterodyne synthetic aperture imaging ladar

Cited by 8 publications

References 21 publications

Recent Advances in Light Detection and Ranging: Optical Modulation Solutions and Novel Nanotechnologies

Recent Advances in Light Detection and Ranging: Optical Modulation Solutions and Novel Nanotechnologies

Ghost imaging in a Rician fading channel with additive random noise

Neural network based synthetic aperture ladar imaging through marine atmosphere

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