Helicopter-based lidar system for monitoring the upper ocean and terrain surface

Lee, Kwi Joo; Park, Young-Sik; Бункин, А. Ф.; Nunes, R.A.; Першин, С. М.; Voliak, K. I.

doi:10.1364/ao.41.000401

Cited by 23 publications

(9 citation statements)

References 6 publications

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“…1 Multiple airborne bathymetric lidar systems have been developed for looking into seawater, primarily for profiling the seafloor surface and, sometimes, also for measuring the optical properties of the water column. [2][3][4][5][6][7][8] Lidars also have been developed for airborne or shipborne measurements of water clarity and attenuation, [9][10][11] spatial and temporal variations in oceanic scattering layers and plankton distributions, [12][13][14] internal waves, 15 chlorophyll content, [16][17][18] and fish. 19 Recently, a space-based lidar was used for producing global maps of phytoplankton biomass and total particulate organic carbon.…”

Section: Introductionmentioning

confidence: 99%

Dual-polarization airborne lidar for freshwater fisheries management and research

et al. 2017

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Abstract. The design of a compact, dual-polarization, nonscanning lidar system intended to fly in a small, singleengine aircraft for airborne study of freshwater marine ecosystems and mapping of fish schools in mountain lakes is discussed. Design trade-offs are presented with special attention paid to selecting the field of view and telescope aperture diameter. Example results and a comparison with a similar existing lidar system are presented.

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Section: Introductionmentioning

confidence: 99%

Dual-polarization airborne lidar for freshwater fisheries management and research

et al. 2017

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“…Fluorescence analysis is a widely used high-sensitivity method that is applied in many scientific and technical fields. A viable application of the technique is the analysis of plant state [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. External factors can cause plants stress and make their growth abnormal.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of Reliability of Plant Stress State Detection by Laser-Induced Fluorescence Method

Fedotov

Bullo

Белов

et al. 2016

International Journal of Optics

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Experimental laboratory investigations of the laser-induced fluorescence spectra of watercress and lawn grass were conducted. The fluorescence spectra were excited by YAG:Nd laser emitting at 532 nm. It was established that the influence of stress caused by mechanical damage, overwatering, and soil pollution is manifested in changes of the spectra shapes. The mean values and confidence intervals for the ratio of two fluorescence maxima near 685 and 740 nm were estimated. It is presented that the fluorescence ratio could be considered a reliable characteristic of plant stress state.

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“…Conventionally, aural and visual information monitoring is performed using pre-installed infrastructure [17], for instance, via cameras mounted on lampposts, buildings' walls, etc., connected to the Internet access points using wired or wireless technology. Besides, in the areas where no fixed infrastructure is available and/or in case of spontaneous gatherings, helicopters are conventionally used for crowd monitoring [10]. And to have crossover the shorting coming of helicopter-based systems, recently, unmanned aerial vehicles (UAV), particularly, quadrocopters or drones have been proposed for flash-crowd monitoring [3].…”

Section: Introductionmentioning

confidence: 99%

Coverage and Network Requirements of a “Big Data” Flash Crowd Monitoring System Using Users’ Devices

Nguyen

Komarov

Moltchanov

2016

Lecture Notes in Computer Science

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Over the past few decades, aural and visual monitoring of massive people gatherings has become a critical problem of national security. In order to tackle this problem, a fixed infrastructure is used whenever possible. The aim of this thesis is to propose the system for spontaneous "flash crowd" monitoring in areas with no fixed infrastructure. The basic concept is to engage users with their mobile devices to participate in the monitoring process. The system takes on characteristics of "big data" generators. We analyze the proposed system for coverage metrics and estimate the rate imposed on the wireless network. Our results show that given a certain level of participation the LTE network can support aural monitoring with prescribed guarantees. However, the modern LTE system cannot fully support visual monitoring, as much more capacity is required. This capacity may potentially be provided by forthcoming millimeter wave and terahertz communication systems.The analysis is conducted mainly using own custom-build simulation environment in C programming language to simulate the formalized problem. The processes and experiments run by using many resources to reduce the time consumption due to large number of calculations. And the graphs are sketched from the numerical results by using MATLAB.ii PREFACE This Master of Science thesis had been done under the guidance of Prof.

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Helicopter-based lidar system for monitoring the upper ocean and terrain surface

Cited by 23 publications

References 6 publications

Dual-polarization airborne lidar for freshwater fisheries management and research

Dual-polarization airborne lidar for freshwater fisheries management and research

Experimental Research of Reliability of Plant Stress State Detection by Laser-Induced Fluorescence Method

Coverage and Network Requirements of a “Big Data” Flash Crowd Monitoring System Using Users’ Devices

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