Echo Characteristics Model of Cat-Eye Effect Based on Matrix Optics

Dongsheng, 武东生 Wu; Bingqi, 刘秉琦 Liu; Wengang, 胡文刚 Hu; Jie, 刘杰 Liu; jiaju, 应家驹 Ying

doi:10.3788/aos201636.0608001

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This condition is called as a 'cat-eye effect' of optical target [1][2][3][4]. By using an active laser-detection technique based on this effect, optical targets can be efficiently distinguished from a background.…”

Section: Introductionmentioning

confidence: 99%

Influence of atmosphere turbulence and laser coherence on the identification method based on interference multiple-beam scanning of optical targets

Zhao¹,

He²,

Shan³

et al. 2017

Ukr. J. Phys. Opt.

View full text Add to dashboard Cite

Abstract. Using an extended Huygens-Fresnel diffraction integral, we have derived analytical formulae that describe a partially coherent array of Gaussian beams passing through an optical target and going back along the entrance way in a turbulent atmosphere. These formulae include the light intensity distribution at the return place, as well as the light intensity distribution and the spatial correlation at the target place. Using numerical calculations, we have studied the effects of laser coherence length and turbulence strength on the interference fringe contrast and the spatial coherence degree at the target place, together with the light intensity distribution at the return place and the system operating range. We have found that the fringe contrast and the spatial coherence degree at the target place decrease with increasing turbulence strength and decreasing laser coherence length. Then the contrast of light intensity distribution at the return place decreases and the difficulties of identification of optical targets grow. The operating range can be as large as hundred kilometres under a weak-turbulence condition, decreasing rapidly to a kilometre level at strong turbulence.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence of atmosphere turbulence and laser coherence on the identification method based on interference multiple-beam scanning of optical targets

Zhao¹,

He²,

Shan³

et al. 2017

Ukr. J. Phys. Opt.

View full text Add to dashboard Cite

show abstract

Analysis of Received Power in Laser Communication Based on Cat's eye Modulating Retro-reflector

Duan

Liu

Fan

et al. 2019

2019 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

View full text Add to dashboard Cite

Three-dimensional echo light field analysis for dual-band laser active detection of a cat-eye optical system

Lv¹,

zhang²,

Bao³

et al. 2023

Opt. Express

View full text Add to dashboard Cite

Laser active detection technology utilizing the cat-eye effect provides rapid response, precise positioning, and long detection distances. However, current research mainly focuses on active detection within a single visible or near-infrared band, lacking quantitative analyses of the echo spot. In this paper, a four-interval theoretical model for dual band cat-eye target echo detection was constructed using matrix optics theory and Collins diffraction integration method. Dual-band echo detection experiments were conducted using 10.6 um far-infrared waves and 532 nm visible light waves, also the power, radius, and target-missing quantities of the echo spots were collected and quantitatively compared with the theoretical results. Results indicate that, due to the diffraction limit's effect on the distribution of the echo field, the echo power of far-infrared band detection is smaller than that of visible light band detection. The impact on the light spot caused by the positive and negative defocus values is asymmetric, with positive defocus having a lower impact on the echo spot than negative defocus at the same value. A weak positive defocus value that minimizes the radius of the echo spot and maximizes the echo power exists, with the value of weak positive defocus varying between detection bands. A linear relationship exists between the incident angle of the detection laser and the deviation of the echo spot. These findings provide a foundation for extracting working band details, predicting the motion trajectory of moving cat-eye targets, and achieving real-time tracking and detection recognition during laser active detection.

show abstract

Echo Characteristics Model of Cat-Eye Effect Based on Matrix Optics

Cited by 4 publications

References 0 publications

Influence of atmosphere turbulence and laser coherence on the identification method based on interference multiple-beam scanning of optical targets

Influence of atmosphere turbulence and laser coherence on the identification method based on interference multiple-beam scanning of optical targets

Analysis of Received Power in Laser Communication Based on Cat's eye Modulating Retro-reflector

Three-dimensional echo light field analysis for dual-band laser active detection of a cat-eye optical system

Contact Info

Product

Resources

About