Results 51 to 60 of about 2,974 (210)

A Comprehensive Review of ns‐3‐Based Simulation Frameworks for LEO Satellite Constellations: Capabilities and Limitations

Software: Practice and Experience, Volume 55, Issue 10, Page 1657-1675, October 2025.
ABSTRACT Background Low Earth Orbit (LEO) satellite constellations are redefining the concept of global connectivity, opening up a new world of opportunities for communication services and applications. Purpose The emergence of LEO satellites (SATs) is ushering in a new era of innovation, where new complex technologies are being developed, and the use ...
Pilar Manzanares‐Lopez, Juan Pedro Muñoz‐Gea, Josemaria Malgosa‐Sanahuja   +2 more
wiley   +1 more source

The Effect of Water Vapor and Solar Zenith Angle on Oceanic Diurnal Warming

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract Oceanic diurnal warm layers have been extensively studied over the years due to their important role in a variety of geophysical disciplines. Much of this research has been dedicated to the development of predictive models of varying complexity to calculate the spatiotemporal magnitude of the effect. This manuscript presents results which show
Andrew Harris, Gary Wick, Sandra Castro
wiley   +1 more source

Preliminary Products of Precise Orbit Determination Using Satellite Laser Ranging Observations for ILRS AAC [PDF]

Journal of Astronomy and Space Sciences, 2012
In this study, we present preliminary results of precise orbit determination (POD) using satellite laser ranging (SLR) observations for International Laser Ranging Service (ILRS) Associate Analysis Center (AAC).
Young-Rok Kim, Sang-Young Park, Eun-Seo Park, Hyung-Chul Lim   +3 more
doaj   +1 more source

Magnetospheric Cold Plasma Diagnostics Using High Altitude GNSS Signals

Journal of Geophysical Research: Space Physics, Volume 130, Issue 3, March 2025.
Abstract The plasmasphere is a key component of Earth's magnetosphere, regulating numerous energy transfer processes. The plasmasphere is also a cold multi‐species plasma. Tracing differences in dynamics between low and high mass cold ions is important for identifying the processes that drive plasmaspheric evolution.
D. M. Malaspina, P. Axelrad, J. Goldstein, R. Nikoukar, D. Rowland, S. Fantinato, E. Miotti   +6 more
wiley   +1 more source

Seasonal and Local Time Variation in the Observed Peak of the Meteor Altitude Distributions by Meteor Radars

Journal of Geophysical Research: Atmospheres, Volume 129, Issue 21, 16 November 2024.
Abstract Meteoroids of sub‐milligram sizes burn up high in the Earth's atmosphere and cause streaks of plasma trails detectable by meteor radars. The altitude at which these trails, or meteors, form depends on a number of factors including atmospheric density and the astronomical source populations from which these meteoroids originate.
E. C. M. Dawkins, D. Janches, G. Stober, J. D. Carrillo‐Sánchez, R. S. Lieberman, C. Jacobi, T. Moffat‐Griffin, N. J. Mitchell, N. Cobbett, P. P. Batista, V. F. Andrioli, R. A. Buriti, D. J. Murphy, J. Kero, N. Gulbrandsen, M. Tsutsumi, A. Kozlovsky, M. Lester, J.‐H. Kim, C. Lee, A. Liu, B. Fuller, D. O’Connor, S. E. Palo, M. J. Taylor, J. Marino, N. Rainville   +26 more
wiley   +1 more source

A sixth-order accurate scheme for solving two-point boundary value problems in astrodynamics

, 2006
A sixth-order accurate scheme is presented for the solution of ODE systems supplemented by two-point boundary conditions. The proposed integration scheme is a linear multi-point method of sixth-order accuracy successfully used in fluid dynamics and ...
Topputo, F, Armellin, Roberto, Armellin, R, Topputo, Francesco   +3 more
core   +2 more sources

A Learning Approach To Sampling Optimization: Applications in Astrodynamics [PDF]

, 2013
A new, novel numerical optimization algorithm is developed, tested, and used to solve difficult numerical problems from the field of astrodynamics. First, a brief review of optimization theory is presented and common numerical optimization techniques ...
Henderson, Troy Allen
core   +3 more sources

Influence of Ocean Currents on Wave Modeling and Satellite Observations: Insights From the One Ocean Expedition

Journal of Geophysical Research: Oceans, Volume 129, Issue 11, November 2024.
Abstract This study investigates the influence of ocean currents on wave modeling and satellite observations using in situ wave measurements from the One Ocean Expedition 2021–2023. In January 2023, six OpenMetBuoy drifters were deployed in the Agulhas Current region.
Ourania Altiparmaki, Øyvind Breivik, Lotfi Aouf, Patrik Bohlinger, Johnny A. Johannessen, Fabrice Collard, Craig Donlon, Gaute Hope, Pieter N. A. M. Visser, Marc Naeije   +9 more
wiley   +1 more source

GPS-Based Relative Navigation for Laser Crosslink Alignment in the VISION CubeSat Mission

Aerospace
As the demand for high-speed space-borne data transmission grows, CubeSat-based Free-Space Optical Communication (FSOC) offers a viable solution for achieving a Gbps-speed optical intersatellite link on low-cost platforms.
Yeji Kim, Pureum Kim, Han-Gyeol Ryu, Youngho Eun, Sang-Young Park   +4 more
doaj   +1 more source

Evaluation of Modeled Diurnal Warming Estimates for Application to Producing Sea Surface Temperature Analyses

Earth and Space Science, Volume 11, Issue 9, September 2024.
Abstract Accurate knowledge of the amount of diurnal warming present in sea surface temperature (SST) observations at different times and effective depths is important for multiple applications including the production of blended SST analyses. This work explores the ability of a modified Kantha‐Clayson‐type one‐dimensional mixed layer ocean model with ...
Gary A. Wick, Sandra L. Castro, Andrew Harris, Jonathan Mittaz   +3 more
wiley   +1 more source