Results 61 to 70 of about 238,197 (181)

Noise Parameters of CW Radar Sensors Used in Active Defense Systems [PDF]

open access: yes, 2012
Active defense represents an innovative way of protecting military vehicles. It is based on the employment of a set of radar sensors which detect an approaching threat missile and activate a suitable counter-measure.
Hudec, P., Jenik, V., Panek, P.
core   +1 more source

Radar for Space Observation: Systems, Methods and Applications

open access: yesRemote Sensing
In today’s world, where near-Earth space constitutes an increasingly congested and contested theater of economic, political, and military activities for the growing number of space-faring nations, the significance of actionable situational awareness ...
Vassilis Karamanavis
doaj   +1 more source

The INSU and DMN network of ST radars [PDF]

open access: yes, 1986
Due to their capabilities of measuring wind profiles with good time and height resolution, Stratosphere-Troposphere (ST) are well adapted to carry out atmospheric research.
Baudin, F.   +5 more
core   +1 more source

Assessment of the potential of MERIS near-infrared water vapour products to correct ASAR interferometric measurements [PDF]

open access: yes, 2006
Atmospheric water vapour is a major limitation for high precision Interferometric Synthetic Aperture Radar (InSAR) applications due to its significant impact on microwave signals.
Albert, P.   +5 more
core   +1 more source

Observations of snowpack properties to evaluate ground-based microwave remote sensing [PDF]

open access: yes, 2013
Active microwave radar has been shown to have great potential for estimating snow water equivalent (SWE) globally from space. To help evaluate optimal active microwave sensor configurations to observe SWE, we evaluated ground-based Frequency Modulated ...
Emad Tajkhorshid (243146)   +5 more
core   +2 more sources

An Overview on Development of Passive Radar Based on the Low Frequency Band Digital Broadcasting and TV Signals

open access: yesLeida xuebao, 2012
Starting from the detection principle and characteristics of passive radar, this paper describes the development of passive radar based on the low frequency band (HF/VHF/UHF) digital broadcasting and TV signal.
Wan Xian-rong
doaj   +1 more source

Tri-Frequency Synthetic Aperture Radar for the Measurements of Snow Water Equivalent [PDF]

open access: yes
SWESARR (Snow Water Equivalent Synthetic Aperture Radar and Radiometer) is an airborne instrument developed at the NASA Goddard Space Flight Center for the retrieval of Snow Water Equivalent. SWESARR was specifically designed to measure co-located active
Bonds, Quenton   +7 more
core   +1 more source

Analysis of energetic radiation associated with thunderstorms in the Ebro delta region in Spain [PDF]

open access: yes, 2016
The analysis of high-energy background radiation (0.1 – 2 MeV) enhancements during eight winter thunderstorms and ¿ve summer storms in the Ebro delta region in the northeast of Spain is presented.
Argemí Ribera, Oriol   +6 more
core   +2 more sources

Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites

open access: yesSensors, 2016
The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites.
Patricia López-Rodríguez   +3 more
doaj   +1 more source

Design considerations for high-power VHF radar transceivers: Phase matching long coaxial cables using a cable radar [PDF]

open access: yes, 1983
The Poker Flat 49.92-MHz MST radar uses 64 phase-controlled transmitters in individual shelters distributed throughout the antenna array. Phase control is accomplished by sampling the transmitted pulse at the directional coupler of each transmitter and ...
Ecklund, W. L., Johnson, P. E.
core   +1 more source

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