Results 41 to 50 of about 27,405 (212)

A new calibration technique for microwave moisture sensors [PDF]

Proceedings of the 17th IEEE Instrumentation and Measurement Technology Conference [Cat. No. 00CH37066], 2001
A new calibration technique was developed for implementation with microwave moisture sensors. The calibration permittivity function used for this purpose allows computation of moisture content in granular materials with significant differences in shape, dimensions, and composition, independent of bulk density and with temperature compensation.
Samir Trabelsi, Andrzej W. Kraszewski, Stuart O. Nelson   +2 more
openaire   +1 more source

Understanding the polarization signal of spherical particles for microwave limb radiances

, 2006
This paper presents a simple conceptual model to explain that even spherical scatterers lead to a polarization difference signal for microwave limb radiances.
S.A. Buehler, Emde, C.,, Teichmann, C.,, Emde, Claudia, C. Teichmann, Emde, C., Teichmann, C., C. Emde, Teichmann, Claas, Buehler, Stefan Alexander, Buehler, Stefan   +10 more
core   +1 more source

A sensor for stiffness change sensing based on three weakly coupled resonators with enhanced sensitivity [PDF]

, 2015
This paper reports on a novel MEMS resonant sensing device consisting of three weakly coupled resonators that can achieve an order of magnitude improvement in sensitivity to stiffness change, compared to current state-of-the-art resonator sensors with ...
Chun Zhao, Zhao, C, Honglong Chang, Xie, Jianbing, Xie, J, Chang, H, Pu, SH, Kraft, M, Kraft, Michael, Chang, Honglong, Pu, Suan-Hui, Michael Kraft, ,, Graham S. Wood, Suan Hui Pu, Zhao, Chun, Wood, GS, Jianbing Xie, Wood, Graham S., Chong, HMH, Chong, Harold M.H., Harold M. H. Chong   +21 more
core   +1 more source

Time Series Consistency of Passive Microwave Sensors (1978–2023) Brightness Temperature Data for Snow Depth Estimation

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Passive microwave remote sensing offers all-weather, all-day observations, but sensor inconsistencies hinder long-term continuity and multisensor integration for surface parameters estimation. This study proposed methods to improve brightness temperature
Min Wu, Lingmei Jiang, Jianwei Yang, Shengli Wu, Guangjin Liu, Cheng Zhang   +5 more
doaj   +1 more source

High responsive microwave resonator sensor for material characterization [PDF]

This work describes the planning and execution of a planar microwave resonator sensor for a sensing application based on the perturbation idea, in which the quality factor (QF) and the resonance frequency are affected by the resonator's dielectric ...
Meor Said, Maizatul Alice, Mohammed Ba Amer, Rayan Ahmed, Othman, Mohd Azlishah, Misran, Mohamad Harris, Hassan, Nurmala Irdawaty, Suhaimi, Shadia, Mohideen Ghani, Muhammad Syaheer   +6 more
core   +1 more source

An Electrically Small Patch Antenna Sensor for Salt Concentration Measurement of NaCl Solution

Sensors
In this paper, a complementary split-ring resonator (CSRR)-based patch antenna is proposed as a microwave sensor to measure the salt concentration of NaCl solution. The microwave sensor consists of an RF-4 substrate, where a small copper disc is attached
Jinfeng Zhu, Cheng Chen, Xiao Sun, Guowen Ding, Shenyun Wang   +4 more
doaj   +1 more source

New Structure for High-Sensitivity Coaxial Thermal Power Sensor in the Frequency Range from DC–50 GHz [PDF]

EPJ Web of Conferences
This paper presents the design and development of a new thermal microwave power sensor for a frequency range spanning from DC to 50 GHz. The purpose of this new design is to propose a high-sensitivity thermoelectric power sensor suitable for ...
Ba Doudou, Lerat Jean-Marie
doaj   +1 more source

A New Approach to Determining Liquid Concentration Using Multiband Annular Ring Microwave Sensor and Polarity Correlator

, 2020
This article presents a new approach to determining liquid concentration using a new microwave sensor and polarity correlator. The sensor design incorporates an annular ring resonator having inside three parallel lines, a trapezoid ground plane and a co ...
Waleed Sethi, Khaled Issa, Ahmed Ibrahim, Saleh Alshebeili, Ali Albishi   +4 more
core   +1 more source

Radiowave technology of resonant gas-sensor microwave telemetry

Российский технологический журнал, 2021
The possibility of using microstrip reflector microwave resonators in solving problems of resonant gas-sensor telemetry on layered dielectric substrates with gas-sensitive sputtering was investigated.
M. S. Kostin, A. D. Yarlykov
doaj   +1 more source

Historical and real-time estimation of snow depth in Eurasia based on multiple passive microwave data

Advances in Climate Change Research, 2023
Current snow depth datasets demonstrate large discrepancies in the spatial pattern in Eurasia, and the lagging updates of datasets do not meet the operational requirements of the meteorological service department. This study developed a dynamic retrieval
Li-Yun Dai, Li-Juan Ma, Su-Ping Nie, Si-Yu Wei, Tao Che   +4 more
doaj   +1 more source