Results 11 to 20 of about 6,842 (203)

Cramer–Rao Lower Bound for SoOp-R-Based Root-Zone Soil Moisture Remote Sensing

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Signals of opportunity (SoOp) reflectometry (SoOp-R) is a maturing field for geophysical remote sensing as evidenced by the growing number of airborne and spaceborne experiments.
Dylan Ray Boyd   +7 more
doaj   +1 more source

Dipsticks with Reflectometric Readout of an NIR Dye for Determination of Biogenic Amines

open access: yesChemosensors, 2020
Electrospun nanofibers (ENFs) are remarkable analytical tools for quantitative analysis since they are inexpensive, easily produced in uniform homogenous mats, and provide a high surface area-to-volume ratio.
Sarah N. Mobarez   +4 more
doaj   +1 more source

Space-Borne GNSS-R Ionospheric Delay Error Elimination by Optimal Spatial Filtering

open access: yesSensors, 2020
Global Navigation Satellite System Reflectometry (GNSS-R) technology is a new and promising remote sensing technology, especially satellite-based GNSS-R remote sensing, which has broad application prospects. In this work, the ionospheric impacts on space-
Qiuyang Zhang, Yang Liu, Junming Xia
doaj   +1 more source

Design and Characterization of the Multi-Band SWIR Receiver for the Lunar Flashlight CubeSat Mission

open access: yesRemote Sensing, 2019
Lunar Flashlight (LF) is an innovative National Aeronautics and Space Administration (NASA) CubeSat mission that is dedicated to quantifying and mapping the water ice harbored in the permanently shadowed craters of the lunar South Pole.
Quentin Vinckier   +6 more
doaj   +1 more source

A Spectroscopic Reflectance-Based Low-Cost Thickness Measurement System for Thin Films: Development and Testing

open access: yesSensors, 2023
The requirement for alternatives in roll-to-roll (R2R) processing to expand thin film inspection in wider substrates at lower costs and reduced dimensions, and the need to enable newer control feedback options for these types of processes, represents an ...
Néstor Eduardo Sánchez-Arriaga   +4 more
doaj   +1 more source

Spaceborne GNSS Reflectometry

open access: yesRemote Sensing, 2022
This article presents a review on spaceborne Global Navigation Satellite System Reflectometry (GNSS-R), which is an important part of GNSS-R technology and has attracted great attention from academia, industry and government agencies in recent years. Compared with ground-based and airborne GNSS-R approaches, spaceborne GNSS-R has a number of advantages,
Kegen Yu   +7 more
openaire   +3 more sources

Incoherent Optical Frequency-Domain Reflectometry Based on Homodyne Electro-Optic Downconversion for Fiber-Optic Sensor Interrogation

open access: yesSensors, 2019
Fiber-optics sensors using interrogation based on incoherent optical frequency-domain reflectometry (I-OFDR) offer benefits such as the high stability of interference in the radio-frequency (RF) domain and the high SNR due to narrowband RF detection. One
Juan Clement   +3 more
doaj   +1 more source

Investigation of the Optical Properties of Silicon-on-Insulator Microring Resonators Using Optical Backscatter Reflectometry

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2022
Introduction. Optical backscatter reflectometry is one of the most promising methods used to examine characteristic parameters relevant to the design of microring resonators.
I. A. Ryabcev   +8 more
doaj   +1 more source

Snow Depth Measurements by GNSS-IR at an Automatic Weather Station, NUK-K

open access: yesRemote Sensing, 2022
Studies have shown that geodetic Global Navigation Satellite System (GNSS) stations can be used to measure snow depths using GNSS interferometric reflectometry (GNSS-IR).
Trine S. Dahl-Jensen   +5 more
doaj   +1 more source

Fault Detection in Multi-Core C&I Cable via Machine Learning Based Time-Frequency Domain Reflectometry

open access: yesApplied Sciences, 2019
The integrity and functionality of the control and instrumentation (C&I) cable systems are essential when it comes to ensuring the reliability and safety of system operations, especially in vehicles or power plants. Whenever a fault occurs in a multi-
Chun-Kwon Lee, Seung Jin Chang
doaj   +1 more source

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