Results 61 to 70 of about 1,108,263 (224)

Prediction of Rice Chlorophyll Index (CHI) Using Nighttime Multi-Source Spectral Data

Agriculture
The chlorophyll index (CHI) is a crucial indicator for assessing the photosynthetic capacity and nutritional status of crops. However, traditional methods for measuring CHI, such as chemical extraction and handheld instruments, fall short in meeting the ...
Cong Liu, Lin Wang, Xuetong Fu, Junzhe Zhang, Ran Wang, Xiaofeng Wang, Nan Chai, Longfeng Guan, Qingshan Chen, Zhongchen Zhang   +9 more
doaj   +1 more source

Deep Learning-Generated Nighttime Reflectance and Daytime Radiance of the Midwave Infrared Band of a Geostationary Satellite

Remote Sensing, 2019
Midwave infrared (MWIR) band of 3.75 μm is important in satellite remote sensing in many applications. This band observes daytime reflectance and nighttime radiance according to the Earth’s and the Sun’s effects.
Yerin Kim, Sungwook Hong
doaj   +1 more source

Topology control in Heterogeneous Wireless Sensor Network [PDF]

, 2016
Topology of a Wireless Sensor Network determines the connectivity of the wireless network and topology Control is the important technique of extending network lifetime while preserving network connectivity.
Deshmukh, Prashant, Dandekar, Deepak R
core  

Environmental sensor networks [PDF]

, 2004
Sensor networks for the natural environment require an understanding of earth science, combined with sensor, communications and computer technology.
Martinez, Kirk, Ong, Royan, Hart, Jane
core   +1 more source

Self‐Powered, Ultra‐Sensitive InGaAs/ITO Nanowire Radial Junction Infrared Photodiode for Low Flux Imaging at Room Temperature

Advanced Functional Materials, EarlyView.
This study reports a self‐powered InGaAs nanowire photodetector achieving single‐photon‐level sensitivity in the shortwave infrared at non‐cryogenic temperatures. The device demonstrates high‐speed imaging capabilities even under extremely low‐flux conditions.
Kosala Dhanawansha, Chaohao Chen, Zhe Li, Tuomas Haggren, Dawei Liu, Yang Yu, Baolei Liu, Sanjay Krishna, Hark H. Tan, Chennupati Jagadish, Lan Fu   +10 more
wiley   +1 more source

A Low-Signal-to-Noise-Ratio Sensor Framework Incorporating Improved Nighttime Capabilities in DIRSIG [PDF]

, 2009
When designing new remote sensing systems, it is difficult to make apples-to-apples comparisons between designs because of the number of sensor parameters that can affect the final image.
Rizzuto, Anthony P
core  

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source

Estimation of Coupled Ocean/Atmosphere Impacts to the Satellite Detection of Nocturnal Maritime Low Clouds

Geophysical Research Letters
Accurate observations of maritime low clouds are important for air and sea transportation, understanding boundary layer processes, and measuring Earth's radiation budget.
Jesse D. Turner, Steven D. Miller, Yoo‐Jeong Noh, J. Christine Chiu, William E. Line, Christian D. Kummerow, Ryan G. Smith   +6 more
doaj   +1 more source

Satellite and Ground-Based Sensors for the Urban Heat Island Analysis in the City of Rome

Remote Sensing, 2010
In this work, the trend of the Urban Heat Island (UHI) of Rome is analyzed by both ground-based weather stations and a satellite-based infrared sensor.
Roberto Fabrizi, Stefania Bonafoni, Riccardo Biondi   +2 more
doaj   +1 more source

Measuring the Size and Growth of Cities Using Nighttime Light [PDF]

, 2020
This paper uses nighttime luminosity to estimate a globally comparable measure of the size of metropolitan areas around the world for the years 2000 and 2010. We apply recently-proposed methodologies that correct the known problems of available nighttime
Juan F. Vargas, Rafael Ch, Vargas Duque, Juan Fernando, Diego A. Martin, Ch, Rafael, Martin, Diego A., Vargas, J. F.   +6 more
core   +1 more source