Results 61 to 70 of about 1,247,246 (231)
Multiphoton microwave photoresistance in a high-mobility two-dimensional electron gas
, 2011 We report on experimental and theoretical studies of microwave-induced resistance oscillations in a two-dimensional electron gas over a wide range of microwave intensities.
Hatke, A. T. +4 more
core +1 more source
Microwave Surveillance based on Ghost Imaging and Distributed Antennas
, 2015 In this letter, we proposed a ghost imaging (GI) and distributed antennas based microwave surveillance scheme. By analyzing its imaging resolution and sampling requirement, the potential of employing microwave GI to achieve high-quality surveillance ...
Lin, Zihuai, Wang, Xiaopeng
core +1 more source
UAV-Based SAR-Imaging of Objects From Arbitrary Trajectories Using Weighted Backprojection
IEEE Journal of MicrowavesSynthetic aperture radars (SARs) based on uncrewed aerial vehicles (UAVs) are advantageous in comparison to existing airborne systems. Apart from cost, their main advantage is the flexibility of their flight path.
Alexander Grathwohl +3 more
doaj +1 more source
Near-Field Microwave Microscopy of Materials Properties
, 2000 Near-field microwave microscopy has created the opportunity for a new class of electrodynamics experiments of materials. Freed from the constraints of traditional microwave optics, experiments can be carried out at high spatial resolution over a broad ...
Anlage, Steven M. +5 more
core +2 more sources
High order fractional microwave induced resistance oscillations in 2D systems
, 2009 We report on the observation of microwave-induced resistance oscillations associated with the fractional ratio n/m of the microwave irradiation frequency to the cyclotron frequency for m up to 8 in a two-dimensional electron system with high electron ...
A. K. Bakarov +8 more
core +1 more source
, 2010 We show that the probability of the collision-induced absorption of non-resonant microwave photons by a gas of ultracold molecules is dramatically enhanced near a Feshbach scattering resonance.
Alyabyshev, Sergey V., Krems, Roman V.
core +1 more source
Weak target detection technology of passive radar on the navigation satellite signal
The Journal of Engineering, 2019 The passive radar detection system receives secondary reflection signal by the navigation satellite signal. The secondary reflection signal is too weak to detect the target.
Xiaoyan Fan +4 more
doaj +1 more source
A fiber based diamond RF B-field sensor and characterization of a small helical antenna
, 2018 We present a microwave B-field scanning imaging technique using diamond micro-crystal containing nitrogen vacancy center that is attached to a fiber tip. We propose a pulsed modulation technique, enabling the implementation of a variety of pulsed quantum
Dong, M. M. +5 more
core +1 more source
Airborne SAR Imaging Algorithm for Ocean Waves Based on Optimum Focus Setting
Remote Sensing, 2019 Ocean waves are the richest texture on the sea surface, from which valuable information can be inversed. In general, the Synthetic Aperture Radar (SAR) images of surface waves will inevitably be distorted due to the intricate motion of surface waves ...
Xiangfei Wei +4 more
doaj +1 more source
Remote Sensing, 2019 In synthetic aperture radar (SAR) images, azimuth ambiguity is one of the important factors that affect image quality. Generally, the azimuth ambiguity-to-signal ratio (AASR) is a measure of the azimuth ambiguity of SAR images.
Hui Meng +4 more
doaj +1 more source