Results 31 to 40 of about 378,510 (233)

Environmental assessment for the Satellite Power System (SPS): Studies of honey bees exposed to 2.45 GHz continuous wave electromagnetic energy [PDF]

open access: yes, 1980
Post treatment brood development was normal and teratological effects were not detected at exposures of 3 to 50 mw sq cm for 30 minutes. Post treatment survival, longevity, orientation, navigation, and memory of adult bees were also normal after ...
Gary, N. E., Westerdahl, B. B.
core   +2 more sources

Multi-Temporal Sentinel-1 Backscatter and Coherence for Rainforest Mapping

open access: yesRemote Sensing, 2020
This paper reports recent advancements in the field of Synthetic Aperture Radar (SAR) for forest mapping by using interferometric short-time-series.
Andrea Pulella   +4 more
doaj   +1 more source

Single Cooper pair tunneling induced by non-classical microwaves

open access: yes, 1996
A mesoscopic Josephson junction interacting with a mode of non-classical microwaves with frequency $\omega$ is considered. Squeezing of the electromagnetic field drastically affects the dynamics of Cooper tunneling.
A Vourdas   +9 more
core   +1 more source

Resonance-like Goss-Haenchen Shift induced by nano-metal films

open access: yes, 2008
The influence of nano-metal films on the Goos-Haenchen shift (GHS) is investigated. The films deposited at the total reflecting surface of a perspex prism/air have a sheet resistance varying between Z = 25 and 3 000 Ohm.
Agudin   +10 more
core   +1 more source

Resonant photon absorption and hole burning in Cr7Ni antiferromagnetic rings [PDF]

open access: yes, 2005
Presented are magnetization measurements on a crystal of Cr7Ni antiferromagnetic rings. Irradiation with microwaves at frequencies between 1 and 10 GHz leads to observation of very narrow resonant photon absorption lines which are mainly broadened by ...
A. Abragam   +5 more
core   +1 more source

Range-Doppler Based CFAR Ship Detection with Automatic Training Data Selection

open access: yesRemote Sensing, 2019
Ship detection is an essential maritime security requirement. Current state-of-the-art synthetic aperture radar (SAR) based ship detection methods employ fully focused images.
Sushil Kumar Joshi   +3 more
doaj   +1 more source

Approaches for Road Surface Roughness Estimation Using Airborne Polarimetric SAR

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The road surface roughness is an important parameter that determines the quality of a road network. It has a direct influence on the grip and skid resistance of the vehicles.
Arun Babu   +2 more
doaj   +1 more source

Characterization of the Amazon Rainforest Backscatter at X-Band Using TanDEM-X Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The radiometric calibration of spaceborne SAR products plays a key role for ensuring a good performance of the whole end-to-end system and requires a precise knowledge of both the radar system and the illuminated target on ground.
Luca Dell'Amore   +4 more
doaj   +1 more source

Geometric Accuracy of Sentinel-1A and 1B Derived from SAR Raw Data with GPS Surveyed Corner Reflector Positions

open access: yesRemote Sensing, 2018
The geometric accuracy of synthetic aperture radar (SAR) data is usually derived from level-1 products using accurately surveyed corner reflector positions.
Kersten Schmidt   +3 more
doaj   +1 more source

3D Printed Hemispherically Radiating Antenna for Broadband Millimeter Wave Applications

open access: yesIEEE Open Journal of Antennas and Propagation, 2023
Nowadays, additive manufacturing provides far-reaching possibilities for use in radio frequency components. In addition to almost unlimited freedom of design as compared to conventional manufacturing, the absence of further assembly steps is a key aspect
Lukas Engel   +7 more
doaj   +1 more source

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