Results 61 to 70 of about 19,438 (271)

SWOT Water Surface Elevation in Herbaceous Wetlands of Florida's Everglades

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Observing water level variations in wetlands is important for tracking global water and carbon cycles. The Surface Water and Ocean Topography (SWOT) mission was launched to measure Earth's surface waters, but its performance in vegetated wetlands was unknown.
Solomon Kica, Tamlin M. Pavelsky, Jessica V. Fayne, Brent A. Williams   +3 more
wiley   +1 more source

Feasibility, Design, and Deployment Requirements of TCR for Bistatic SAR Radiometric Calibration

Remote Sensing, 2018
The trihedral corner reflector (TCR) is widely used as the calibration device in monostatic synthetic aperture radar (SAR) calibration, and the performance of the TCR in radiometric calibration has been studied and verified in depth.
Qiaona Zheng, Yu Wang, Jun Hong, Aichun Wang   +3 more
doaj   +1 more source

Moon Imaging Performance of FAST Radio Telescope in Bistatic Configuration with Other Radars

Remote Sensing, 2023
Ground-based radar has been used for Moon imaging for more than 60 years. Five-hundred-meter Aperture Spherical radio Telescope (FAST), as the largest radio telescope on Earth, holds significant potential for celestial imaging missions with its ...
Yan Yin, Jinghai Sun, Lijia Huang, Peng Jiang, Xiaochen Wang, Chibiao Ding   +5 more
doaj   +1 more source

WiFi-based PCL for monitoring private airfields [PDF]

, 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, COLONE, Fabiola, LOMBARDO, Pierfrancesco, MARTELLI, TATIANA, PASTINA, Debora   +4 more
core   +1 more source

Satellite Traces: Ionogram Signatures of Bottom‐Side Upwelling Structures ‐ A Simulation Study

Geophysical Research Letters, Volume 52, Issue 7, 16 April 2025.
Abstract Satellite Traces (STs) are the important ionogram signatures for the presence of upwellings in the bottom‐side ionosphere, which provide the necessary seed perturbation for the development of equatorial plasma bubbles (EPBs). In this study, a virtual ionosonde experiment is simulated to investigate the various ST signatures under the presence ...
M. Ankita, S. Tulasi Ram, T. Yokoyama, R. T. Tsunoda, A. P. Dimri, S. Mondal, Chinmaya Nayak   +6 more
wiley   +1 more source

MODELING OF BISTATIC RADAR CLUTTER

Perner’s Contacts, 2012
The bistatic radar forms a basic part of multistatic radar systems for Air Traffic Control. The effort in this article is to provide the inside and make basis for future research of the bistatic radar clutter.
Marek Pola, Pavel Bezoušek
doaj  

Bistatic full-wave radar tomography detects deep interior voids, cracks and boulders in a rubble-pile asteroid model [PDF]

, 2019
In this paper, we investigate full-wave computed radar tomography (CRT) using a rubble-pile asteroid model in which a realistic shape (Itokawa) is coupled with a synthetic material composition and structure model. The aim is to show that sparse bistatic radar measurements can distinguish details inside a complex-structured rubble-pile asteroid.
arxiv   +1 more source

Cosmic Rays and the Askaryan Effect Reveal Subsurface Structure and Buried Ice on the Moon

Geophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract We present the first full‐wavelength numerical simulations of the electric field generated by cosmic ray impacts into the Moon. Billions of cosmic rays fall onto the Moon every year. Ultra‐high energy cosmic ray impacts produce secondary particle cascades within the regolith and subsequent coherent, wide‐bandwidth, linearly‐polarized radio ...
E. S. Costello, R. R. Ghent, A. Romero‐Wolf, P. W. Gorham, P. G. Lucey, C. J. Tai Udovicic, P. Linton, A. Ludwig, K. McBride, C. Miki, E. Oberla, J. Rolla, A. Jung   +12 more
wiley   +1 more source

Passive bistatic radar probes of the subsurface on airless bodies using high energy cosmic rays via the Askaryan effect [PDF]

arXiv, 2022
We present a new technique to perform passive bistatic subsurface radar probes on airless planetary bodies. This technique uses the naturally occurring radio impulses generated when high-energy cosmic rays impact the body's surface. As in traditional radar sounding, the downward-beamed radio emission from each individual cosmic ray impact will reflect ...
arxiv  

Construction of dense CMP data from sparsely collected GPR CMP data for the improved estimation of soil dielectric constant profile

Vadose Zone Journal, Volume 24, Issue 1, January/February 2025.
Abstract A multichannel ground‐penetrating radar unit, which consists of multiple fixed transmitters and receivers, allows one to obtain time‐lapse multi‐offset gathers (MOG) by fixing the unit in one place at the expense of spatial resolution. When applying common semblance analysis for dielectric constant estimation, it is important that MOG, such as
Koki Oikawa, Hirotaka Saito, Seiichiro Kuroda, Kazunori Takahashi   +3 more
wiley   +1 more source