Results 1 to 10 of about 1,345,323 (375)

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
The Cassini RADAR instrument is a multimode 13.8 GHz multiple-beam sensor that can operate as a synthetic-aperture radar (SAR) imager, altimeter, scatterometer, and radiometer. The principal objective of the RADAR is to map the surface of Titan. This will be done in the imaging, scatterometer, and radiometer modes. The RADAR altimeter data will provide
Elachi, Charles   +21 more
openaire   +5 more sources

Joint radar-communication waveform designs using signals from multiplexed users [PDF]

open access: yes, 2020
Joint radar-communication designs are exploited in applications where radar and communications systems share the same frequency band or when both radar sensing and information communication functions are required in the same system.
Cao, Ning   +3 more
core   +1 more source

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

Camille Drevet : Les Annamites chez eux (1928) ou l’écriture de l’urgence

open access: yesViatica, 2018
Les Annamites chez eux, published in 1928 by Camille Drevet, has a strong link with what is called here “emergency writing”. Sketching a portrait of this feminist, the article examines the theoretical viewpoints surrounding the specific case of female ...
Emmanuelle Radar
doaj   +1 more source

Radar spectrum opportunities for cognitive communications transmission [PDF]

open access: yes, 2008
In relation to opportunistic access to radar spectrum, the impact of the radar on a communication system is investigated in this paper. This paper illustrates that by exploring the spatial and temporal opportunities in the radar spectrum and therefore ...
Doufexi, A   +3 more
core   +3 more sources

Estimation and Adjustment of Polarization Errors in Conical Scan Method

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2018
The article proposes a solution of a problem of polarization error compensation for radar object direction finding by means of conical scan method.
A. A. Bludov   +3 more
doaj   +1 more source

Circulation Retrieval of Wake Vortices under Rainy Conditions with an X Band Radar

open access: yesLeida xuebao, 2017
At airports, runway operation is the limiting factor for the overall throughput; specifically the fixed and overly conservative ICAO wake turbulence separation minima.
Jean-Yves Schneider   +2 more
doaj   +1 more source

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