Results 31 to 40 of about 2,797,347 (234)
Performance Analysis of Sensor Systems for Space Situational Awareness [PDF]
Journal of Astronomy and Space Sciences, 2017 With increased human activity in space, the risk of re-entry and collision between space objects is constantly increasing. Hence, the need for space situational awareness (SSA) programs has been acknowledged by many experienced space agencies.
Eun-Jung Choi +8 more
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Photonic based Radar: Characterization of 1x4 Mach-Zehnder Demultiplexer [PDF]
, 2012 This work is based on a research activity which aims to implement an optical transceiver for a photonic-assisted fully–digital radar system based on optic miniaturized optical devices both for the optical generation of the radiofrequency (RF) signal and ...
SHAHZAD, UMAR
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Advances in entomological laser radar
The Journal of Engineering, 2019 During the past decade, the authors have developed and applied optical remote sensing instrumentation for in situ remote surveillance and quantification of the aerofauna.
Mikkel Brydegaard, Samuel Jansson
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Remote Sensing, 2020 Monitoring the expansion of commodity crops in the tropics is crucial to safeguard forests for biodiversity and ecosystem services. Oil palm (Elaeis guineensis) is one such crop that is a major driver of deforestation in Southeast Asia.
Thuan Sarzynski +3 more
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Moving target detection based on velocity compensation methods in a coherent continuous wave lidar
The Journal of Engineering, 2019 Light Detection and Ranging (lidar) technology has been applied in military and civil areas and shows great potential. However, in coherent lidar detection, significant Doppler Effect and velocity uncertainty result a bad influence on moving target ...
Huixin Huang +3 more
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Optical High-Capacity Satellite Downlinks via High-Altitude Platform Relays [PDF]
, 2007 Earth-observation (EO) satellite missions produce a large amount of data using high-resolution optical or radar sensors. During the last decades the amount of data has steadily increased due to improved sensor technologies with increased temporal ...
Florian Moll +13 more
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Optical Butting of Plane Array Sensors for PA-LiDAR
IEEE Access, 2021 In order to expand the field of view and improve the resolution, a method of optical butting was proposed for two plane array sensors using beam splitter prism in this paper.
Shuo Zhang +3 more
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Arthritis Care &Research, EarlyView.Objective Obesity, defined by body mass index (BMI) ≥30 kg/m2, is a risk factor for functional limitations in people with knee osteoarthritis (OA). However, function varies among such individuals. Our objective was to evaluate the implications of obesity subtypes on longitudinal patterns of physical functioning in people with or at risk for knee OA ...
Kristine Godziuk +7 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Sustainability assessment requires methodologies that appropriately distinguish between additive and non‐additive material properties. A toxicity‐weighted scoring system is developed and applied that accounts for the disproportionate influence of highly toxic constituents through nonlinear weighting functions, providing more realistic estimates than ...
Seth Mehalic +2 more
wiley +1 more source
Earth and Planetary Physics, 2018 Meteoroids entering the Earth's atmosphere can create meteor trail irregularity seriously disturbing the background ionosphere. Although numerous observations of meteor trail irregularities were performed with VHF/UHF coherent scatter radars in the past,
GuoZhu Li +6 more
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