Results 61 to 70 of about 27,633 (255)
Communications Earth & EnvironmentSynthetic aperture radar is an invaluable tool for monitoring lake ice. This study utilizes synthetic aperture radar to analyze the 2019-2023 backscatter time series of perennially ice-covered Lake Untersee in East Antarctica.
Adam Gaudreau +2 more
doaj +1 more source
Temporal Survey of P- and L-Band Polarimetric Backscatter in Boreal Forests
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2018 Environmental conditions and seasonal variations affect the backscattered radar signal from a forest. This potentially causes errors in a biomass retrieval scheme using data from the synthetic aperture radar (SAR) data.
Albert R. Monteith, Lars M. H. Ulander
doaj +1 more source
Weather, EarlyView.Lowest‐layer cloud base height (CBH) measurements obtained between July 2018 and December 2019 from four ceilometers at the Korea Standard Meteorological Observatory were compared to determine how ceilometer installation angle differentially affects CBH measurements.
Jaewon Kim +3 more
wiley +1 more source
Environmental Research Letters, 2015 Mapping anthropogenic forest disturbances has largely been focused on distinct delineations of events of deforestation using optical satellite images.
Neha Joshi +8 more
doaj +1 more source
Improving the altimetric rain record from Jason-1 & Jason-2 [PDF]
, 2010 Dual-frequency rain-flagging has long been a standard part of altimetric data analysis, both for quality control of the data and for the study of rain itself, because altimeters can provide a finer spatial sampling of rain than can passive microwave ...
Amarouche +37 more
core +1 more source
High Voltage, EarlyView.ABSTRACT Power lines in synthetic‐aperture radar (SAR) images are reflected as point signatures, which fluctuate annually in both the azimuth and range directions. A novel framework is proposed in this paper to evaluate the four‐dimensional dynamic status of power line sag using those point signatures in time‐series SAR images.
Sijie Ma +4 more
wiley +1 more source
Characterization of the Amazon Rainforest Backscatter at X-Band Using TanDEM-X Data
IEEE Journal of Selected Topics in Applied Earth Observations and Remote SensingThe radiometric calibration of spaceborne SAR products plays a key role for ensuring a good performance of the whole end-to-end system and requires a precise knowledge of both the radar system and the illuminated target on ground.
Luca Dell'Amore +4 more
doaj +1 more source
Erosion of granular sediments by submerged impinging jets: Particle size effects and cohesion onset
AIChE Journal, Volume 72, Issue 6, June 2026.Abstract This study investigates the erosion behavior and modeling of glass particle beds under impinging jet conditions, with a focus on particle size effects and the onset of cohesion. Ultrasonic profiling is implemented to scan and measure static crater profiles.
Ahmad Mohamadiyeh +4 more
wiley +1 more source
Backscatter Transponder Based on Frequency Selective Surface for FMCW Radar Applications [PDF]
, 2014 This paper describes an actively-controlled frequency selective surface (FSS) to implement a backscatter transponder. The FSS is composed by dipoles loaded with switching PIN diodes. The transponder exploits the change in the radar cross section (RCS) of
Girbau, D. +3 more
core +1 more source
A near real-time algorithm for flood detection in urban and rural areas using high resolution Synthetic Aperture Radar images [PDF]
, 2011 A near real-time flood detection algorithm giving a synoptic overview of the extent of flooding in both urban and rural areas, and capable of working during night-time and day-time even if cloud was present, could be a useful tool for operational flood ...
Bates, Paul +4 more
core +1 more source