Results 1 to 10 of about 26,972 (241)

Micro-CT Study of Mongolian Gerbil Humeral Bone After Prolonged Spaceflight Based on a New Algorithm for Delimitation of Long-Bone Regions

open access: yesFrontiers in Physiology, 2021
The Mongolian gerbil displays unique physiological and anatomical features that make this species an attractive object for biological experiments in space.
Yuri S. Krivonosov   +8 more
doaj   +1 more source

Characterization of Laser Frequency Stability by Using Phase-Sensitive Optical Time-Domain Reflectometry

open access: yesPhotonics, 2023
A new method to measure laser phase noise and frequency stability based on the phase-sensitive optical time-domain reflectometry is proposed. In this method, the laser under test is utilized in a phase-sensitive optical time-domain reflectometer, which ...
Danil M. Bengalskii   +5 more
doaj   +1 more source

Lake Altimetry Using Long Coherent Integration Carrier Phase Measurements from Airborne GNSS Reflectometry

open access: yesRemote Sensing, 2023
Today, land and ocean observations are crucial for monitoring climate change. The method of GNSS reflectometry is an opportunistic way to provide low-cost observations of many geophysical parameters.
Nolan Varais   +3 more
doaj   +1 more source

Low-Cost BDS Reflectometry for Real-Time Water Surface Retrieval

open access: yesRemote Sensing, 2023
The official launch of the Chinese BeiDou Navigation Satellite System with global coverage (BDS-3) presents significant opportunities for various applications, including precision agriculture and autonomous driving, among others.
Ken Deng   +4 more
doaj   +1 more source

External Modulation Optical Coherent Domain Reflectometry with Long Measurement Range

open access: yesSensors, 2021
Optical coherent domain reflectometry (OCDR) can achieve a high spatial resolution that is independent of the bandwidth of the receiver, but the measurement range is usually very limited.
Yinghong Xue   +2 more
doaj   +1 more source

GNSS-IR Measurements of Inter Annual Sea Level Variations in Thule, Greenland from 2008–2019

open access: yesRemote Sensing, 2021
Studies of global sea level often exclude Tide Gauges (TGs) in glaciated regions due to vertical land movement. Recent studies show that geodetic GNSS stations can be used to estimate sea level by taking advantage of the reflections from the ocean ...
Trine S. Dahl-Jensen   +4 more
doaj   +1 more source

A New Insight on the “S” Shape Pattern of Soft Faults in Time-Domain Reflectometry

open access: yesSensors, 2023
This paper proposes a new interpretation of the commonly observed, very specific, time-domain response associated with a soft defect in an electrical line under test using time-domain reflectometry.
Florent Loete
doaj   +1 more source

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

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