Theoretical model considering optimal ranging performance and energy efficiency for photon-counting lidars with multiple detectors

2021 ◽  
Vol 60 (28) ◽  
pp. 8838
Author(s):  
Jian Yang ◽  
Yue Ma ◽  
Song Li ◽  
Xinyuan Liu ◽  
Wenhao Zhang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Photon Counting ◽  
Multiple Detectors

scholarly journals Optimization of a dual-energy contrast-enhanced technique for a photon-counting digital breast tomosynthesis system: I. A theoretical model

2010 ◽  
Vol 37 (11) ◽  
pp. 5896-5907 ◽  
Author(s):  
Ann-Katherine Carton ◽  
Christer Ullberg ◽  
Karin Lindman ◽  
Raymond Acciavatti ◽  
Tom Francke ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Photon Counting ◽  
Digital Breast Tomosynthesis ◽  
Dual Energy ◽  
Breast Tomosynthesis ◽  
Contrast Enhanced

scholarly journals Detection Probability Analysis of True Random Coding Photon Counting Lidar

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 545
Author(s):  
Yang Yu ◽  
Zhangjun Wang ◽  
Kuntai Ma ◽  
Chao Chen ◽  
Xiufen Wang ◽  
...  
Keyword(s):  
Theoretical Model ◽  
Detection Probability ◽  
Effective Means ◽  
Photon Number ◽  
Photon Counting ◽  
Sequence Length ◽  
Random Coding ◽  
Working Principle ◽  
The Impact ◽  
First Time

With the wide application of lidar in the future, the problem of crosstalk between lidars will become more serious. True random coding photon counting lidar with high anti-crosstalk ability will play an important role in solving this problem. In this paper, based on the working principle of Gm-APD, the detection probability theoretical model of true random coding photon counting lidar is built, and the impact of jitter on detection probability is considered for the first time. The influence of mean echo photon number, mean pulse count density, sequence length and pulse width on detection probability is analyzed. Monte Carlo simulation and experimental results are highly consistent with the theoretical model, which proves the correctness of the detection probability theoretical model. This theoretical model provides an effective means to evaluate the system performance.

Ghosting theoretical model of single photon counting imagers with Vernier anode

2013 ◽  
Vol 56 (8) ◽  
pp. 1472-1477
Author(s):  
Hao Yang ◽  
BaoSheng Zhao ◽  
QiuRong Yan ◽  
YongAn Liu
Keyword(s):  
Theoretical Model ◽  
Single Photon ◽  
Photon Counting ◽  
Single Photon Counting

scholarly journals Influence Mechanism of Energy Efficiency Label on Consumers’ Purchasing Behavior of Energy-Saving Household Appliances

2021 ◽  
Vol 12 ◽  
Author(s):  
Guo Si-dai ◽  
Lu Cheng-Peng ◽  
Li Hang ◽  
Zhu Ning
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Energy Saving ◽  
Purchase Intention ◽  
Cognitive Theory ◽  
Perceived Value ◽  
Equation Modeling ◽  
Purchasing Behavior ◽  
Household Appliances ◽  
The Impact

Mandatory energy efficiency label is an effective way to change consumers’ consumption habits and guide them to buy energy-saving appliances. However, few studies concerned about the impact of energy efficiency label on consumers’ purchasing behavior. Based on the theory of planned behavior (TPB), social cognitive theory and signaling theory, this paper constructs a theoretical model of the effect of the energy label on consumers’ purchasing behavior of energy-saving household appliances. The survey data of 396 household appliance consumers in Mianyang City, China, are collected by the interception method, and the theoretical model is tested by structural equation modeling (SEM). Empirical results of this study indicate that consumers’ cognition and perceived value of energy efficiency label significantly affect label trust. Perceived value has a significant impact on consumers’ purchasing behavior of energy-saving appliances, while label cognition and label trust indirectly influence consumers’ purchasing behavior through the intermediary variable of purchase intention. External environmental factors such as publicity and education as well as subjective norms affect consumers’ actual purchasing behavior through the intermediary effect of purchase intention. This study provides important insights into the policy intervention measures to promote consumers’ purchasing behavior of energy-saving appliances.

scholarly journals Theoretical ranging performance model and range walk error correction for photon-counting lidars with multiple detectors

2018 ◽  
Vol 26 (12) ◽  
pp. 15924 ◽  
Author(s):  
Yue Ma ◽  
Song Li ◽  
Wenhao Zhang ◽  
Zhiyu Zhang ◽  
Rui Liu ◽  
...  
Keyword(s):  
Error Correction ◽  
Photon Counting ◽  
Performance Model ◽  
Multiple Detectors

scholarly journals Theoretical substantiation of optimum energy efficiency of ultrasonic wet dispersing

2021 ◽  
Vol 2094 (2) ◽  
pp. 022068
Author(s):  
Roman N Golykh
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Physical Mechanism ◽  
Maximum Energy ◽  
Solid Particles ◽  
Experimental Results ◽  
Fraction Composition ◽  
Theoretical Substantiation ◽  
Dispersed Particles ◽  
Optimum Energy

Abstract The known preliminary experimental results of ultrasonic dispersing of suspension were presented and analyzed. The need for determination optimum modes providing maximum energy efficiency of ultrasonic wet dispersing is justified. The physical mechanism and the theoretical model of ultrasonic dispersing were proposed. The model allows to calculate fraction composition of dispersed particles and to evaluate, that the maximum of energy efficiency exists at fixed intensity for different materials of solid particles.

A semi-theoretical model for energy efficiency assessment of air source heat pump systems

2021 ◽  
Vol 228 ◽  
pp. 113667
Author(s):  
Zhaowei Xu ◽  
Hao Li ◽  
Shuangquan Shao ◽  
Wei Xu ◽  
Zhichao Wang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Heat Pump ◽  
Air Source Heat Pump ◽  
Efficiency Assessment

Sub-Picosecond Mode-Locked Laser Diodes

1997 ◽  
Vol 08 (03) ◽  
pp. 525-546 ◽  
Author(s):  
N. Stelmakh
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Phase Modulation ◽  
Femtosecond Lasers ◽  
Short Pulse ◽  
Laser Diodes ◽  
Mode Locking ◽  
Short Pulse Laser ◽  
Laser Systems ◽  
Power And Energy

Recent experiments have shown that laser diodes are capable generating nulses as short as 160 fs, thus approaching the performance of more conventional femtosecond lasers such as Tilsapphire lasers or dye lasers. Regular progress is also accomplished in terms of power and energy efficiency or spectral and spatial brightness with the development of novel semiconductor laser structures. In this paper, we review decisive improvements which have placed laser diodes in category of sub-picosecond lasers. A number of experimental results are used to illustrate the specific characteristics of short-pulse laser diodes as compared to other laser systems. The effects of dispersion and phase modulation are discussed on a basis of theoretical model of chirp mode locking.

On the theory of hydrate formation decomposition under thermal influence

2019 ◽  
Vol 14 (4) ◽  
pp. 243-252
Author(s):  
V.Sh. Shagapov ◽  
M.R. Davletshina
Keyword(s):  
Energy Efficiency ◽  
Theoretical Model ◽  
Heat Source ◽  
Gas Hydrate ◽  
Heat Exposure ◽  
Hydrate Formation ◽  
Gas Production ◽  
Hot Water ◽  
Time Interval ◽  
Gas Hydrate Formation

A mathematical model of the process of decomposition of gas hydrate during heat exposure is proposed and developed. Based on the proposed technological scheme and the corresponding theoretical model, the problem of the action of a heat source on a porous layer of finite length, initially saturated with methane hydrate, is considered. The task describes the heating and simultaneous extraction of gas into a combined well. According to the adopted scheme, a coolant in the form of hot water is supplied to the annular channel, and the internal well communicates with the formation and gas is produced there, which was formed during the hydrate decomposition as a result of thermal exposure. The influence of the temperature of the heat source on the evolution of thermal fields around the well, on the nature of the motion of the phase transition boundary, is studied, and the law of its motion is obtained. The heat consumption for heating the formation and the evolution of gas output over the considered time interval at various values of the heating temperature and pressure drop are analyzed. The dynamics of the gas mass flow rate and the energy efficiency of methane production at various values of the temperature difference between the reservoir and the fluid injected into the heat pipe are revealed. A quasistationary solution is obtained that corresponds to the case when a pressure is maintained in the well equal to the equilibrium value for the initial temperature of the gas hydrate formation. The dependence of the energy efficiency of the proposed method of gas production on the porosity of the formation is analyzed. It was established that with a twofold increase in the hydrate content of the formation, this value grows by about ten percent. The obtained solutions make it possible to determine the most favorable heat exposure regimes. Moreover, this solution is in good agreement with the numerical results obtained by a more general theoretical model.

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