Results 61 to 70 of about 429,305 (296)

Improved Clutter Suppression and Detection of Moving Target with a Fully Polarimetric Radar

open access: yesRemote Sensing
Remote sensing of moving targets, particularly pedestrians on the road, is crucial for advanced driver assistance systems. However, pedestrian detection using the radar system remains an ongoing challenge due to the radar cross section (RCS) of ...
Zhilong Zhao   +9 more
doaj   +1 more source

On Parameter Estimation for Bandlimited Optical Intensity Channels

open access: yesComputation, 2019
Parameter estimation is of paramount importance in every digital receiver. This is not only true for radio, but also for optical links; otherwise, subsequent processing stages, like detector units or error correction schemes, could not be operated ...
Wilfried Gappmair
doaj   +1 more source

Design of an Image Motion Compenstaion (IMC) Algorithm for Image Registration of the Communication, Ocean, Meteorolotical Satellite (COMS)-1 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2006
This paper presents an Image Motion Compensation (IMC) algorithm for the Korea's Communication, Ocean, and Meteorological Satellite (COMS)-1. An IMC algorithm is a priority component of image registration in Image Navigation and Registration (INR) system
Taek Seo Jung   +4 more
doaj   +1 more source

Chemically Doped Conductive Polymers for Wearable Health Monitoring

open access: yesAdvanced Materials Technologies, EarlyView.
Among conductive polymers, poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) are the most studied and applied. Chemical doping significantly boosts intrinsic conductivity and mechanical robustness.
Mengdi Zuo   +5 more
wiley   +1 more source

A Fast High-Resolution Imaging Algorithm for Helicopter-Borne Rotating Array SAR Based on 2-D Chirp-Z Transform

open access: yesRemote Sensing, 2019
In view of the azimuth resolution of the helicopter-borne rotating array synthetic aperture radar (RoASAR) depending on the azimuth reconstruction angle and the sector distortion caused by the azimuth Deramp processing, this paper proposes an efficient ...
Mengyi Qin   +5 more
doaj   +1 more source

Design and development of a solar array drive [PDF]

open access: yes, 1977
The design and development of a dry lubricated direct drive solar array pointing mechanism is discussed for use on the Orbital Test Satellite (OTS), MAROTS, European Communication Satellite (ECS), and others.
Rees, T., Standing, J. M.
core   +2 more sources

Topography‐Regulated Screening Platform for Myoblast Contact Guidance

open access: yesAdvanced Materials Technologies, EarlyView.
This study develops a topography‐regulated screening platform (12 gradients in 96‐topography‐well plate) enabling analysis of skeletal muscle morphogenesis. The topography‐induced cell morphology changed, cell polarization, and myotube differentiation, establishing an evaluative framework for generating pathologically relevant myotube phenotypes to ...
Tianqi Feng   +6 more
wiley   +1 more source

Multichannel demultiplexer/demodulator technologies for future satellite communication systems [PDF]

open access: yes
NASA-Lewis' Space Electronics Div. supports ongoing research in advanced satellite communication architectures, onboard processing, and technology development.
Abramovitz, Irwin   +4 more
core   +1 more source

Highly Anisotropic Quasi‐Direct Organic Metal Halide Hybrids: A Platform for Polarization‐Sensitive Optoelectronics

open access: yesAdvanced Materials Technologies, EarlyView.
One‐dimensional C4N2H14PbBr4 is shown to have a quasi‐direct electronic band structure and strongly anisotropic transport with polarized broadband emission. A GW/Bethe–Salpeter excited‐state force formalism, supported by polarized Raman and temperature‐dependent photoluminescence, identifies low–frequency Pb–Br phonons that drive ultrafast exciton self‐
Rijan Karkee   +7 more
wiley   +1 more source

Communication satellite systems for Alaska [PDF]

open access: yes
Technical and cost factors for implementation of Alaskan communication satellite ...
Gubin, S., Lavanhar, H., Whalen, A.
core   +1 more source

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