Results 1 to 10 of about 1,136,557 (404)

Quantum Radar [PDF]

open access: yesPhysical Review Letters, 2020
We propose a quantum metrology protocol for the localization of a non-cooperative point-like target in three-dimensional space, by illuminating it with electromagnetic waves. It employs all the spatial degrees of freedom of N entangled photons to achieve an uncertainty in localization that is sqrt(N) times smaller for each spatial direction than what ...
Lorenzo Maccone, Changliang Ren
openaire   +4 more sources

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

Increasing the noise immunity of radio receiving paths with automatic sensitivity control

open access: yesDoklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2021
The relevance of the study of automatic sensitivity control systems (ASC) is determined by their demand for the creation and modernization of radio receiving paths (RRP) with increased noise immunity for radar systems, radio navigation and radio ...
Р. V. Zayats, I. Y. Malevich
doaj   +1 more source

Radar: The Cassini Titan Radar Mapper [PDF]

open access: yesSpace Science Reviews, 2004
International ...
Elachi, Charles   +21 more
openaire   +7 more sources

Аdaptive broadband low-noise RF amplifier

open access: yesDoklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2020
Adaptive broadband low-noise radio frequency amplifiers (ABLNRFA) are widely used in the construction of systems for protecting radio receiving paths from nonlinear damage in a non-stationary electromagnetic environment (EME).
I. Yu. Malevich, P. V. Zayats
doaj   +1 more source

QUALITY ASSESSMENT FOR THE FIRST PART OF THE TANDEM-X GLOBAL DIGITAL ELEVATION MODEL [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
TanDEM-X is an innovative synthetic aperture radar (SAR) mission with the main goal to generate a global and homogeneous digital elevation model (DEM) of the Earth’s land masses.
B. Bräutigam   +8 more
doaj   +1 more source

The TanDEM-X Mission Phases—Ten Years of Bistatic Acquisition and Formation Planning

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
TanDEM-X is a formation flying interferometer consisting of two SAR satellites. Together they acquire bistatic SAR data of the earth in order to generate a global digital elevation model as well as individual scientific interferometric datasets on user ...
Markus Bachmann   +11 more
doaj   +1 more source

On the Derivation of Volume Decorrelation From TanDEM-X Bistatic Coherence

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
The bistatic interferometric coherence is affected by different sources of error, among which volume decorrelation, which quantifies the amount of noise caused by volume scattering mechanisms.
Paola Rizzoli   +5 more
doaj   +1 more source

Radar detection and speed estimation of high‐speed targets using phase‐modulated waveforms

open access: yesElectronics Letters, 2023
Specifying parameters of high‐speed targets as range and velocity in radar systems operating with phase‐modulated signals is a problematic process because of the serious effect of high Doppler frequency on these types of waveforms.
Alaa G. Zahra   +3 more
doaj   +1 more source

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