Results 51 to 60 of about 4,121,317 (291)

Electronically tuned 23 GHz Gunn oscillators for a microwave datalink [PDF]

open access: yes, 1988
Includes bibliographical references.A market has been identified for 23 GHz, short-haul, low-capacity, digital radio. The dissertation presents the development of the varactor controlled Gunn oscillators that constitute the crystal locked microwave ...
Kratzenstein, L
core   +1 more source

Lunar heat flow from the observation of Chinese Chang’E 2 and LRO diviner radiometers

open access: yesAIP Advances
Lunar heat flow within 75°N to 65°S and 60°W to 100°E regions is retrieved from microwave brightness temperature observed by Chang’E-2 (CE-2) Lunar Microwave Radiometers and infrared brightness temperature observed by Lunar Reconnaissance Orbiter (LRO ...
Dan Zhang, Cui Li
doaj   +1 more source

Comparing firn temperature profile retrieval based on the firn densification model and microwave data over the Antarctica [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The firn temperature is a crucial parameter for understanding firn densification processes of the Antarctic Ice Sheet (AIS). Simulations with firn densification models (FDM) can be conceptualized as a function that relies on forcing data, comprising ...
X. Wang   +6 more
doaj   +1 more source

Theoretical study of ice cover phenology at large freshwater lakes based on SMOS MIRAS data [PDF]

open access: yesThe Cryosphere, 2018
The paper presents a theoretical analysis of seasonal brightness temperature variations at a number of large freshwater lakes: Baikal, Ladoga, Great Bear Lake (GBL), Great Slave Lake (GSL), and Huron, retrieved from Microwave Imaging Radiometer with ...
V. Tikhonov   +4 more
doaj   +1 more source

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

open access: yesAdvances 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   +4 more
doaj   +1 more source

Influence of surface topography on brightness temperature of the regions along the road [PDF]

open access: yesE3S Web of Conferences, 2020
Internal temperature of the road is one of the important indicators to evaluate the safety of the road, and the microwave radiometer data is only efficient way to acquire the internal temperatures.
Xu Gang, Yang Ying, Meng Zhiguo
doaj   +1 more source

Hydrogel‐Based 3D‐Printed Anthropomorphic Breast Phantom for Emulating Mechanical and Dielectric Properties of Mammary Tissue. Applications in Microwave Imaging

open access: yesAdvanced Functional Materials, EarlyView.
A 3D‐printable breast phantom is developed using patient‐derived MRI data and hydrogels that replicate the dielectric properties of healthy and cancerous tissues. Mechanical and dielectric characterization confirm its suitability for microwave imaging.
Carlos M. Andreu   +5 more
wiley   +1 more source

Observation of a Lunar Eclipse at 89, 150, and 183 GHz

open access: yesThe Planetary Science Journal, 2023
We describe the measurement of the brightness temperature of the Moon from space during a total lunar eclipse by using a microwave sounder aboard a weather satellite.
Martin J. Burgdorf   +3 more
doaj   +1 more source

Optical Detection of Cellular Signals at Material Interfaces

open access: yesAdvanced Healthcare Materials, EarlyView.
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren   +5 more
wiley   +1 more source

Correction of the SMAP Sea Surface Brightness Temperature and Retrieval of Sea Surface Salinity Incorporating CYGNSS Observables

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The correction of sea surface brightness temperature is crucial for improving the accuracy of sea surface salinity (SSS) retrieval by L-band microwave radiometer.
Zheng Li   +3 more
doaj   +1 more source

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