Modeling Equatorial to Mid‐Latitudinal Global Night Time Ionospheric Plasma Irregularities Using Machine Learning by Ephrem Beshir Seba, Giovanni Lapenta

“…We utilize Random Forest (RF) and a one‐dimensional Convolutional Neural Network (1D‐CNN) model, incorporating data from the Swarm A, B, and C satellites, space weather data from the OMNIWeb data center, as well as zonal and meridional wind model data. …”
Get full text

Ionospheric Turbulence: A Challenge for GPS Loss of Lock Understanding by P. De Michelis, G. Consolini, A. Pignalberi, G. Lovati, M. Pezzopane, R. Tozzi, F. Giannattasio, I. Coco, M. F. Marcucci

“…Abstract Ionospheric irregularities may affect electromagnetic signals propagating through the ionosphere and consequently contribute to the malfunctioning of the Global Navigation Satellite Systems hindering their accuracy and reliability. …”
Get full text

Internal tides off the Amazon shelf in the western tropical Atlantic: analysis of SWOT Cal/Val mission data by M. Tchilibou, L. Carrere, F. Lyard, C. Ubelmann, G. Dibarboure, E. D. Zaron, B. K. Arbic

Get full text

The Short‐Time Prediction of Thermospheric Mass Density Based on Ensemble‐Transfer Learning by Peian Wang, Zhou Chen, Xiaohua Deng, Jing‐Song Wang, Rongxing Tang, Haimeng Li, Sheng Hong, Zhiping Wu

“…Abstract Reliable short‐time prediction of thermospheric mass density along the satellite orbit is always essential but challenging for the operation of Low‐Earth orbit satellites. …”
Get full text

The 2022 Starlink Geomagnetic Storms: Global Thermospheric Response to a High‐Latitude Ionospheric Driver by D. D. Billett, K. Sartipzadeh, M. F. Ivarsen, E. Iorfida, E. Doornbos, E. C. Kalafatoglu Eyiguler, K. Pandey, K. A. McWilliams

“…Abstract In this study, we present ionospheric observations of field‐aligned currents from AMPERE and the ESA Swarm A satellite, in conjunction with high‐resolution thermospheric density measurements from accelerometers on board Swarm C and GRACE‐FO, for the third and 4 February 2022 geomagnetic storms that led to the loss of 38 Starlink internet satellites. …”
Get full text

The Short‐Time Prediction of the Energetic Electron Flux in the Planetary Radiation Belt Based on Stacking Ensemble‐Learning Algorithm by Rongxin Tang, Yuhao Tao, Jiahao Li, Zhou Chen, Xiaohua Deng, Haimeng Li

“…Abstract High energy electrons in planetary radiation belts are a major threat to satellites and communications in deep space applications. …”
Get full text

Development of Engineering Models of Nanosatellites for Student Training by V. Е. Evchik, A. A. Spiridonov, D. V. Ushakov, V. S. Baranova, I. A. Shalatonin, V. A. Saechnikov

“…They allow testing hardware and software of the onboard equipment and payload, simulating operation modes, and flight programs, and enable students to gain practical skills in working with ultra-small satellites. The complexes include ground stations, 2 ultra-small satellite simulators, BSUSAT-1 low-orbit nanosatellite, remote access laboratory, local and external servers for data storage. …”
Get full text

An Hourly Prediction Model of Relativistic Electrons Based on Empirical Mode Decomposition by Yedong Qian, Jianwei Yang, Hua Zhang, Chao Shen, Yewen Wu

“…In particular, the >2‐MeV electrons could penetrate the surface of satellites and accumulate inside. After a long period, such an electron flux effect could cause satellites to be unable to function properly or to fail completely. …”
Get full text

Global Maps of Equatorial Plasma Bubbles Depletions Based on FORMOSAT‐7/COSMIC‐2 Ion Velocity Meter Plasma Density Observations by Irina Zakharenkova, Iurii Cherniak, John J. Braun, Qian Wu

“…Abstract FORMOSAT‐7/COSMIC‐2 is the largest equatorial multi‐satellite constellation of six full‐size satellites to study the equatorial ionosphere. …”
Get full text

Comparative Performance of Sentinel-2 and Landsat-9 Data for Raw Materials’ Exploration Onshore and in Coastal Areas by Morgana Carvalho, Joana Cardoso-Fernandes, Francisco Javier González, Ana Claudia Teodoro

“…This study compares the performance of two satellites, Sentinel-2 and Landsat-9, for mineral exploration in two geologically distinct areas in northern Spain. …”
Get full text

Intersatellite Comparisons of GOES Magnetic Field Measurements by Frederick J. Rich, Samuel Califf, Paul T. M. Loto'aniu, Monica Coakley, Alexander Krimchansky, Howard J. Singer

“…Abstract GOES‐16 and GOES‐17 are the first of NOAA's Geostationary Operational Environmental Satellite (GOES)‐R series of satellites. Each GOES‐R satellite has a magnetometer mounted on the end (outboard) and one part‐way down a long boom (inboard). …”
Get full text

SAR Radiometric Cross-Calibration Based on Multiple Pseudoinvariant Calibration Sites With Extensive Backscattering Coefficient Range by Yongsheng Zhou, Xiang Chen, Qiang Yin, Fei Ma, Fan Zhang

“…Synthetic aperture radar (SAR) radiometric cross-calibration achieves the calibration of uncalibrated satellites by employing calibrated satellites to illuminate the same ground targets. …”
Get full text

Mathematical and Experimental Simulation of Operating Modes of Capillary Emitter of Electrostatic Colloidal Microthruster by S. V. Redko, E. B. Chubenko, V. P. Bondarenko, I. V. Nikiforov, M. S. Krakov

“…Such emitters can be used in the energy system of low-mass satellites as a source of jet propulsion. The dependence of the thrust of a micromotor on the electrical power supplied to it was experimentally studied, which made it possible to determine the most efficient operating modes of the microthruster. …”
Get full text

Physics‐Based Approach to Thermospheric Density Estimation Using CubeSat GPS Data by Shaylah M. Mutschler, Penina Axelrad, Eric K. Sutton, Dallas Masters

“…The current thermospheric density model used in operations, the High Accuracy Satellite Drag Model (HASDM), applies corrections to an empirical density model every 3 hr using observations of 75+ calibration satellites. …”
Get full text

From InSAR‐Derived Subsidence to Relative Sea‐Level Rise—A Call for Rigor by P. S. J. Minderhoud, M. Shirzaei, P. Teatini

“…Correct interpretation of results is essential as InSAR satellites measure reflector movement, which may not always align with land surface movement, particularly in urban areas. …”
Get full text

Research on integrated navigation systemby rubidium clock by LI Ting-jun, LIN Xue-yuan, DONG Wen-hong, QIU Jun-hai

“…On the basis of introducing the limitations of the double-star positioning system,the precision rubidium clock was put forward to be the internal clock of the RDSS receiver.If the receiver could measure the pseudo-ranges from the user to the satellites,with the help of barometer,the RDSS could be integrated with the strap-down inertial navigation system based on pseudo-range.The simulation result shows that the output navigation parameters of the integrated sys-tem have the characteristic of low error,which offers one new way to develop our country’s RDSS.…”
Get full text

Companhs de camins, Robert Lafont et le PCF by Marie-Jeanne Verny

“…Robert Lafont's relations with the PCF and its satellites took many forms between the post-war years and the early 1980s, in a variety of political and historical contexts. …”
Get full text

SOME POSSIBILITIES OF THE AERIAL DRONES USE IN PRECISION AGRICULTURE – A REVIEW by IOSIF IOJA, VALENTIN NEDEFF, MARICEL AGOP, FLORIN MARIAN NEDEFF

“…Remote sensing in agriculture is an important technology that uses data from sensors mounted on satellites, drones, and aircraft to monitor and evaluate agricultural land. …”
Get full text

Tandem Observations of Nighttime Mid‐Latitude Topside Ionospheric Perturbations by Hosub Song, Jaeheung Park, Yaqi Jin, Yuichi Otsuka, Stephan Buchert, Jaejin Lee, Yu Yi

“…In situ plasma density measurements onboard individual satellites could overcome the limited coverage of ground‐based MSTID observations. …”
Get full text

Comparative Analysis of TPA‐LSTM and Transformer Models for Forecasting GEO Radiation Belt Electron Fluxes by Mengli Tan, Xu Si, Shangchun Teng, Xinming Wu, Xin Tao

“…Abstract The geosynchronous orbit (GEO) is a region filled with energetic electrons and it hosts hundreds of satellites. Electron fluxes at GEO can change sharply within hours, making high‐time‐resolution prediction crucial. …”
Get full text