Results 1 to 10 of about 35,504 (125)

Evaluation of Empirical Atmospheric Models Using Swarm-C Satellite Data [PDF]

open access: yesAtmosphere, 2022
Swarm-C satellite, a new instrument for atmospheric study, has been the focus of many studies to evaluate its usage and accuracy. This paper takes the Swarm-C satellite as a research object to verify the Swarm-C accelerometer’s inversion results.
Lirong Yin   +7 more
doaj   +5 more sources

Atmospheric Density Inversion Based on Swarm-C Satellite Accelerometer

open access: yesApplied Sciences, 2023
We used the Swarm-C accelerometer data to invert the orbital atmospheric density in this study. First, the Swarm-C satellite mission data were obtained from the ESA’s public data platform, and preliminary data error correction was performed.
Lirong Yin   +5 more
doaj   +2 more sources

IMPLEMENTASI FUZZY C-MEAN DAN ALGORITMA PARTICLE SWARM OPTIMIZATION UNTUK CLUSTERING KABUPATEN/KOTA DI INDONESIA BERDASARKAN INDIKATOR INDEKS PEMBANGUNAN MANUSIA

open access: yesE-Jurnal Matematika, 2022
This research is aimed to determine conduct clustering in accordance with the conditions of districts / cities throughout Indonesia based on the IPM indicator and to determine the performance comparison of Fuzzy C-Means using particle swarm optimization ...
I KADEK SONA DWIGUNA   +2 more
doaj   +1 more source

Tandem Observations of Nighttime Mid‐Latitude Topside Ionospheric Perturbations

open access: yesSpace Weather, 2023
Nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) have been generally observed by ground‐based instruments. However, they provide 2‐dimensional images over only a limited field of view and are not distributed globally.
Hosub Song   +6 more
doaj   +1 more source

Seasonal Variations in the Organization and Structure of Apis cerana cerana Swarm Queen Cells

open access: yesSociobiology, 2021
This paper describes the organization and structure of the swarm queen cells of Apis cerana cerana in spring, summer, and autumn in Kunming, Yunnan Province, China.
Shunhua Yang   +5 more
doaj   +1 more source

An Improved Dolphin Swarm Algorithm Based on Kernel Fuzzy C-Means in the Application of Solving the Optimal Problems of Large-Scale Function

open access: yesIEEE Access, 2020
The solution of high dimensional function has always been a hot topic. In this paper, a novel algorithm based on Kernel Fuzzy C-means and dolphin swarm algorithm are proposed to solve high-dimensional functions more accurately.
Weibiao Qiao, Zhe Yang
doaj   +1 more source

Swarm A and C Accelerometers: Data Validation and Scientific Interpretation

open access: yesEarth and Space Science, 2023
The fourth European Space Agency Earth Explorer (Swarm) was launched in 2013 and it comprises a constellation of three identical satellites. The primary mission objective is analyzing and modeling the geomagnetic field and its temporal evolution, based ...
Elisabetta Iorfida   +3 more
doaj   +1 more source

Dynamically Energy-Efficient Resource Allocation in 5G CRAN Using Intelligence Algorithm

open access: yesEmitter: International Journal of Engineering Technology, 2022
5G network is the next generation for cellular networks to overcome the challenges and limitations of the 4G network.  Cloud Radio Access Network(C-RAN) is providing solutions for cost-efficient and power-efficient solutions for the 5G network.
Prasanth Rao Adiraju, Voore Subba Rao
doaj   +1 more source

Predicting global thermospheric neutral density during periods with high geomagnetic activity

open access: yesScientific Reports, 2023
Estimating global and multi-level Thermosphere Neutral Density (TND) is important for studying coupling processes within the upper atmosphere, and for applications like orbit prediction.
Ehsan Forootan   +5 more
doaj   +1 more source

Assessment of new thermospheric mass density model using NRLMSISE-00 model, GRACE, Swarm-C, and APOD observations

open access: yesJournal of Atmospheric and Solar-Terrestrial Physics, 2020
Abstract Thermospheric mass density estimates from in-situ observations along satellite orbits are difficult to validate due to their inherent spatiotemporal sparse nature, and difficulties related to drag-force modeling and estimation of actual mass density state.
Calabia, Andres   +2 more
openaire   +3 more sources

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