Results 31 to 40 of about 870,217 (377)
Radiometric Performance of the TerraSAR-X Mission over More Than Ten Years of Operation
Remote Sensing, 2018 The TerraSAR-X mission, based on two satellites, has produced SAR data products of high quality for a number of scientific and commercial applications for more than ten years.
Marco Schwerdt +8 more
doaj +1 more source
Antenna Array Calibration Using a Sparse Scene
IEEE Open Journal of Antennas and Propagation, 2021 In radar systems, antenna arrays acquire direction-dependent information to localize targets or create images of the environment. However, because of unknown complex amplitudes per channel and mutual coupling, a calibration is necessary for good ...
Johanna Geiss +3 more
doaj +1 more source
High-Fidelity Trapped-Ion Quantum Logic Using Near-Field Microwaves. [PDF]
Physical Review Letters, 2016 We demonstrate a two-qubit logic gate driven by near-field microwaves in a room-temperature microfabricated surface ion trap. We introduce a dynamically decoupled gate method, which stabilizes the qubits against fluctuating energy shifts and avoids the ...
T. Harty +5 more
semanticscholar +1 more source
Statistical Regularization for Enhanced TomoSAR Imaging
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 One of the main topics in synthetic aperture radar (SAR) tomography (TomoSAR) is the estimation of the vertical structures' location, which scatter the field back toward the sensor, constrained to a reduced number of passes. Moreover, the introduction of
Gustavo Martin del Campo +2 more
doaj +1 more source
Retrieval of Firn Thickness by Means of Polarisation Phase Differences in L-Band SAR Data
Remote Sensing, 2021 The knowledge of glacier zones’ extent and their temporal variations is fundamental for the retrieval of surface mass balance of glaciers and ice sheets.
Giuseppe Parrella +2 more
doaj +1 more source
TomoSAR Mapping of 3D Forest Structure: Contributions of L-Band Configurations
Remote Sensing, 2021 Synthetic Aperture Radar (SAR) measurements are unique for mapping forest 3D structure and its changes in time. Tomographic SAR (TomoSAR) configurations exploit this potential by reconstructing the 3D radar reflectivity.
Matteo Pardini +2 more
doaj +1 more source
Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity [PDF]
Physical Review Applied, 2017 In this Letter, we demonstrate the generation of multimode entangled states of propagating microwaves. The entangled states are generated by parametrically pumping a multimode superconducting cavity.
C. W. S. Chang +10 more
semanticscholar +1 more source
Huygens’ metasurfaces from microwaves to optics: a review
Nanophotonics, 2018 In this article, the basic principles and the main applications of Huygens’ metasurfaces (HMSs) are reviewed from microwaves to optics. In general, HMSs comprise a thin layer of orthogonal electric and magnetic dipoles, which form an array of Huygens ...
Michael Chen +3 more
semanticscholar +1 more source
IEEE Journal of Microwaves, 2022 Surface acoustic wave (SAW) radio-frequency identification (RFID) has high potential for industrial applications, where automated identification and localization of assets represent the backbone of process controlling and logistics.
Pau Caldero +2 more
doaj +1 more source
Multi-Temporal Sentinel-1 Backscatter and Coherence for Rainforest Mapping
Remote 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