Results 21 to 30 of about 11,654,989 (317)

Study of a Strong L-Band RFI Source [PDF]

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
CN006 is the name given by the European Space Agency (ESA) in their reports on radio frequency interference (RFI) to an instance of RFI in the L-band spectral window at 1.413 GHz protected for passive use only. The source of the interference is located east of the Chinese city of Hangzhou in an area with radar installations.
Paolo de Matthaeis, David M. Le Vine, Yan Soldo, Álvaro Llorente   +3 more
openaire   +2 more sources

Сonceptual design of small spacecraft with a high resolution P-VHF band bistatic SAR system

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
Spatial resolution is one of the most important characteristics of a radar image. Significant limitations in communication regulations should be taken into account concerning radar facilities in long-wave frequency ranges (P or VHF). These limitations do
O. V. Goryachkin, I. V. Maslov, B. G. Zhengurov   +2 more
doaj   +1 more source

Remote sensing of sea surface salinity: challenges and research directions

GIScience & Remote Sensing, 2023
Salinity is a key parameter that affects the surface, deep circulations, and heat transport of oceans. Sea surface salinity (SSS) represents the salinity at the ocean surface and impacts atmosphere – ocean interactions and vertical ocean circulation.
Young Jun Kim, Daehyeon Han, Eunna Jang, Jungho Im, Taejun Sung   +4 more
doaj   +1 more source

Photochemical activity in Dalbergia nigra (Vell.) Fr. Allem. seedlings submitted to water deficit

Journal of Forest Science, 2018
In this study, we evaluated the influence of the daily variation of both intensity of photosynthetically active radiation (PAR) and temperature on chlorophyll a fluorescence parameters in Jacarandá-da-Bahia seedlings submitted to two treatments: T1 ...
Natiele SANDRINI CELOVANE, Jadson BONINI ZAMPIROLLO, Thais SILVA COSTA, Clodoaldo LEITES PINHEIRO, Diolina MOURA SILVA, Elisa MITSUKO AOYAMA, Antelmo RALPH FALQUETO   +6 more
doaj   +1 more source

Special issue in honour of Prof. Reto J. Strasser - Revisiting JIP-test: An educative review on concepts, assumptions, approximations, definitions and terminology

Photosynthetica, 2020
The aim of this educative review is, by revisiting the JIP-test as introduced and further elaborated and extended by Professor Reto J. Strasser and his research group, to clarify concepts, assumptions, and approximations on which it is based, as well as ...
M. TSIMILLI-MICHAEL
doaj   +1 more source

Ionospheric Sounding Based on Spaceborne PolSAR in P-Band

Atmosphere, 2022
The signal of spaceborne low-frequency full-polarization synthetic aperture radar (full-pol SAR) contains abundant ionospheric information. Phased Array L-band Synthetic Aperture Radar (PALSAR) working in the L-band has been verified as an emerging ...
Wulong Guo, Cheng Wang, Haisheng Zhao, Shaodong Zhang, Le Cao, Peng Xiao, Lu Liu, Liang Chen, Yuanyuan Zhang   +8 more
doaj   +1 more source

The SARSense Campaign: Air- and Space-Borne C- and L-Band SAR for the Analysis of Soil and Plant Parameters in Agriculture

Remote Sensing, 2021
With the upcoming L-band Synthetic Aperture Radar (SAR) satellite mission Radar Observing System for Europe L-band SAR (ROSE-L) and its integration into existing C-band satellite missions such as Sentinel-1, multi-frequency SAR observations with high ...
David Mengen, Carsten Montzka, Thomas Jagdhuber, Anke Fluhrer, Cosimo Brogi, Stephani Baum, Dirk Schüttemeyer, Bagher Bayat, Heye Bogena, Alex Coccia, Gerard Masalias, Verena Trinkel, Jannis Jakobi, François Jonard, Yueling Ma, Francesco Mattia, Davide Palmisano, Uwe Rascher, Giuseppe Satalino, Maike Schumacher, Christian Koyama, Marius Schmidt, Harry Vereecken   +22 more
doaj   +1 more source

Modified Zebra Optimization Algorithm via Design Operators for Modern Power System Planning Problem Solution

IEEE Access
Transmission Expansion Planning (TEP) is a key aspect in securing the reliability and efficiency of current-day power systems when dealing with the growing energy needs and energy security.
Yunus Balci, Serhat Duman
doaj   +1 more source

Comparing C- and L-band SAR images for sea ice motion estimation [PDF]

The Cryosphere, 2015
Pairs of consecutive C-band synthetic-aperture radar (SAR) images are routinely used for sea ice motion estimation. The L-band radar has a fundamentally different character, as its longer wavelength penetrates deeper into sea ice.
J. Lehtiranta, S. Siiriä, J. Karvonen
doaj   +1 more source

Investigating Remote Work Trends in Post-COVID-19: A Twitter-Based Analysis

IEEE Access
This study explores the evolving trends and public perceptions of remote work that have emerged in the aftermath of the COVID-19 pandemic, with a particular focus on identifying key themes and sentiments expressed on Twitter in 2022.
Adem Korkmaz, Selma Bulut, Selahattin Kosunalp, Teodor Iliev   +3 more
doaj   +1 more source