Ronald Maj

ORCID: 0000-0002-0402-1517
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About
Contact & Profiles
Research Areas
  • Spacecraft Design and Technology
  • Ionosphere and magnetosphere dynamics
  • Earthquake Detection and Analysis
  • Solar and Space Plasma Dynamics
  • Advanced Frequency and Time Standards
  • Atmospheric Ozone and Climate
  • Laser-induced spectroscopy and plasma
  • Seismology and Earthquake Studies
  • Electromagnetic Compatibility and Measurements
  • Satellite Communication Systems
  • Advanced Battery Technologies Research
  • Space exploration and regulation
  • Remote Sensing and LiDAR Applications
  • Geophysics and Gravity Measurements
  • Geological Studies and Exploration
  • Dust and Plasma Wave Phenomena
  • Bluetooth and Wireless Communication Technologies
  • Seismic Waves and Analysis
  • Hydrocarbon exploration and reservoir analysis
  • GNSS positioning and interference
  • Space Satellite Systems and Control
  • Advanced Antenna and Metasurface Technologies
  • Geological formations and processes
  • Space Technology and Applications
  • Geochemistry and Geologic Mapping

RMIT University
2020-2022

Geoscience Australia
2022

ACT Government
2022

The University of Sydney
2017-2021

Mount Stromlo Observatory
2021

MIT University
2020

Space weather is a key component in the daily operation of many technological systems and applications, including large-scale power grids, high-frequency radio systems, satellite systems. As international space sector continues to boom, accessible products, tools education are increasingly important ensure that actors (both old new) equipped with knowledge how influences their activities applications. At RMIT University, initiative was taken develop Weather Prediction Laboratory exercise for...

10.1051/swsc/2022025 article EN cc-by Journal of Space Weather and Space Climate 2022-01-01

Ginan is a GNSS (Global Navigation Satellite System) analysis centre software that currently being developed by Geoscience Australia in partnership with industry and academic partners. fully open-source based on the SSR (State Space Representation), PPP (Precise Point Positioning) model capable of computing precise positioning products, delivering real-time correction services, as well operating user-driven engine. modern, multi-threaded C++ application utilises standard high-performance...

10.33012/2024.19598 article EN Proceedings of the ION ... Pacific PNT Meeting/Proceedings of the Institute of Navigation Pacific PNT 2024-05-08

Abstract Dust detection is an important area of research, especially for determining the space environment in Earth orbit. Satellites such as GPS constellation are vital millions people everyday and dust impacts on spacecraft can lead to catastrophic failure when particles large enough (Caswell et al., 1995, https://doi.org/10.1016/0734-743X(95)99843-G ). However, micron‐sized or smaller be detected due plasma cloud that released from their impact (Meyer‐Vernet, 1983,...

10.1029/2018ja025546 article EN Journal of Geophysical Research Space Physics 2018-09-01

Abstract We investigate the practicality of using quasi‐thermal noise (QTN) and shot spectroscopy on a CubeSat in Earth's ionosphere constrain satellite antenna length for optimal detection these signals. The voltage spectra predicted thermal Langmuir waves particle “shot noise” are modeled, it is shown that signals detected can provide two very good, independent, passive, situ methods measuring plasma density temperature ionosphere. impact potential ϕ also discussed, we show negative...

10.1002/2016ja023832 article EN Journal of Geophysical Research Space Physics 2017-02-25

Atmospheric mass density (AMD) plays a vital role in the drag calculation for space objects low Earth orbit (LEO). Many empirical AMD models have been developed and used prediction efforts continue to improve their accuracy forecasting high-altitude atmospheric conditions. Previous studies assessed these at height of 200 km 600 km. A new model, dubbed as SERC was by accounting ion contribution based on International Reference Ionosphere 2016 including many more ions that are not accounted...

10.1002/essoar.10502170.1 preprint EN cc-by-nc-nd 2020-02-09

The impedance for a monopole antenna is derived and compared with the cases wire dipole double-sphere antennas. This derivation produces new expression response function, $F_{m1}(x)$. monopole, dipole, functions are by modeling an in Earth's ionospheric plasma (i.e. electrostatic collisionless) predicting capacitance voltage power spectra quasi-thermal noise (QTN) shot noise. current distribution assumed to be half-triangular (considering only positive half of triangular distribution)....

10.1029/2019rs006956 article EN Radio Science 2020-03-20

Atmospheric mass density (AMD) plays a vital role in the drag calculation for space objects low-Earth orbit. Many empirical AMD models have been developed and used orbit prediction (OP) efforts continue to improve their accuracy forecasting high-altitude atmospheric conditions. Previous studies assessed these at height of 200 km 600 km. In this article, four state-of-the-art models, i.e., Mass Spectrometer Incoherent Scatter extended model (MSISE90), MSISE00, Jacchia–Bowman 2008, Drag...

10.1109/maes.2021.3125101 article EN IEEE Aerospace and Electronic Systems Magazine 2021-12-20
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