Results 21 to 30 of about 10,454 (157)

Can GNSS reflectometry detect precipitation over oceans? [PDF]

open access: yes, 2018
For the first time, a rain signature in Global Navigation Satellite System Reflectometry (GNSS‐R) observations is demonstrated. Based on the argument that the forward quasi‐specular scattering relies upon surface gravity waves with lengths larger than ...
Asgarimehr, Milad   +3 more
core   +1 more source

Bistatic Experiment Using TerraSAR-X and DLR’s new F-SAR System [PDF]

open access: yes, 2008
A bistatic X-band experiment was successfully performed early November 2007. TerraSAR-X was used as transmitter and DLR’s new airborne radar system F-SAR, which was programmed to acquire data in a quasi-continuous mode to avoid echo window ...
Baumgartner, Stefan   +11 more
core  

Fundamental Radar Properties: Hidden Variables in Spacetime [PDF]

open access: yes, 2001
A derivation of the properties of pulsed radiative imaging systems is presented with examples drawn from conventional, synthetic aperture, and interferometric radar.
Altes   +5 more
core   +2 more sources

WiFi-based PCL for monitoring private airfields [PDF]

open access: yes, 2017
In this article, the potential exploitation of WiFi-based PCL systems is investigated with reference to a real-world civil application in which these sensors are expected to nicely complement the existing technologies adopted for monitoring purposes ...
BONGIOANNI, CARLO   +4 more
core   +1 more source

Capabilities of Earth-based radar facilities for near-Earth asteroid observations

open access: yes, 2016
We evaluated the planetary radar capabilities at Arecibo, the Goldstone 70-m DSS-14 and 34-m DSS-13 antennas, the 70-m DSS-43 antenna at Canberra, the Green Bank Telescope, and the Parkes Radio Telescope in terms of their relative sensitivities and the ...
Benner, Lance. A. M.   +4 more
core   +1 more source

Sidelobe Contamination in Bistatic Radars

open access: yesJournal of Atmospheric and Oceanic Technology, 2000
Abstract The problem of sidelobe contamination in a bistatic network is explored. The McGill bistatic network consists of one S-band Doppler radar and two low-gain passive receivers at remote sites. Operational experience with the bistatic network indicated many cases in which sidelobe contamination seemed nonnegligible.
Isztar Zawadzki, Ramón de Elía
openaire   +2 more sources

A New Age of SAR: How Can Commercial Smallsat Constellations Contribute to NASA's Surface Deformation and Change Mission?

open access: yesEarth and Space Science, Volume 12, Issue 1, January 2025.
Abstract In response to the 2017 Decadal Survey, NASA conducted a five‐year study on the Surface Deformation and Change (SDC) designated observable to study potential mission concepts. As part of the SDC mission study, the Commercial Synthetic Aperture Radar (ComSAR) subgroup was tasked with evaluating the current landscape of the SAR and ...
Stacey A. Huang   +9 more
wiley   +1 more source

Using Ground‐Penetrating Radar to Infer Ice Wedge Characteristics Proximal to Water Tracks

open access: yesJournal of Geophysical Research: Earth Surface, Volume 130, Issue 1, January 2025.
Abstract Massive ground ice in Arctic regions underlain using continuous permafrost influences hydrologic processes, leading to ground subsidence and the release of carbon dioxide and methane into the atmosphere. The relation of massive ground ice such as ice wedges to water tracks and seasonally saturated hydrologic pathways remains uncertain.
Rachel H. Harris   +4 more
wiley   +1 more source

Impact of beacon interval on the performance of WiFi-based passive radar against human targets [PDF]

open access: yes, 2018
The capability of WiFi-based passive radar to detect, track and profile human targets in both indoor and outdoor environment has been widely demonstrated.
BONGIOANNI, CARLO   +3 more
core   +1 more source

Bistatic and Stereoscopic Configurations for HF Radar [PDF]

open access: yesRemote Sensing, 2020
Most HF radars operate in a monostatic or quasi-monostatic configuration. The collocation of transmit and receive facilities simplifies testing and maintenance, reduces demands on communications networks, and enables the use of established and relatively straightforward signal processing and data interpretation techniques.
openaire   +3 more sources

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