A5012940319- Ionosphere and magnetosphere dynamics
- GNSS positioning and interference
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Geomagnetism and Paleomagnetism Studies
- Earthquake Detection and Analysis
- Atmospheric Ozone and Climate
- Spacecraft Design and Technology
- Oceanographic and Atmospheric Processes
- Meteorological Phenomena and Simulations
- Radio Wave Propagation Studies
- Big Data Technologies and Applications
- Precipitation Measurement and Analysis
- Astro and Planetary Science
RMIT University
2020-2024
ACT Government
2023
RMIT Europe
2023
MIT University
2023
Nagoya University
2016-2017
Institute of Biomedical Physics
2016-2017
Ho Chi Minh City Institute of Physics
2017
Earth and Space Research
2016
Abstract Predicting the daily variability of Equatorial Plasma Bubbles (EPBs) is an ongoing scientific challenge. Various methods for predicting EPBs have been developed, however, research community yet to scrutinize evaluating and comparing these prediction models/techniques. In this study, 12 months co‐located GPS UHF scintillation observations spanning South America, Atlantic/Western Africa, Southeast Asia, Pacific sectors are used evaluate Generalized Rayleigh‐Taylor (R‐T) growth rates...
Centimetre-level accurate ionospheric corrections are required for a high accuracy and rapid convergence of Precise Point Positioning (PPP) GNSS positioning solutions. This research aims to evaluate the local/regional delay model using linear interpolation method across Australia. The is assessed as function both different latitudinal regions number spatial density Continuously Operating Reference Stations (CORSs). Our shows that, local region 5° latitude ×10° longitude in mid-latitude...
Abstract The Hunga Tonga Volcano eruption launched a myriad of atmospheric waves that have been observed to travel around the world several times. These generated traveling ionospheric disturbances (TIDs) in ionosphere, which are known adversely impact radio applications such as Global Navigation Satellite Systems (GNSS). One GNSS application is Precise Point Positioning (PPP), can achieve cm‐level accuracy using single receiver, following typical convergence time 30 min 1 hr. A network...
Abstract For the first time, vertical rise velocities of postmidnight field‐aligned irregularities (FAIs) at low geomagnetic latitudes have been examined near June solstice by using two‐dimensional maps F region FAI echoes observed with Equatorial Atmosphere Radar in Indonesia for 3 years starting May 2010. We found 15 freshly growing FAIs between and August during years. The are smaller than postsunset, most do not exceed an altitude 450 km. Based on velocities, a lower limit creation time...
Abstract We investigated a postmidnight field‐aligned irregularity (FAI) event observed with the Equatorial Atmosphere Radar at Kototabang (0.2°S, 100.3°E, dip latitude 10.4°S) in Indonesia on night of 9 July 2010 using comprehensive data set both neutral and plasma parameters. examined rate total electron content change index (ROTI) obtained from GPS receivers Southeast Asia, airglow images detected by an all‐sky imager, thermospheric winds temperatures Fabry‐Perot interferometer...
Abstract Global Navigation Satellite System fast precise positioning can be achieved with accurate ionospheric corrections computed from an adequate number of GNSS stations in a local region. In low-latitude regions, the presence electron density gradients over short distances lead to outliers map and decrease its accuracy. this study, we explored outlier detection correction mapping through statistical residuals during four-month test 2021. Our findings indicate that model conform Laplace...
Abstract An unseasonal equatorial plasma bubble (EPB) event over South‐East Asia was observed on July 22, 2014 that has not been studied before. investigation into this is presented with the 26th July, as a comparison, non‐bubble day. The 22nd EPB occurred in late post‐sunset sector and associated small upward drift. This highlighted using new filter SCINDA S4 data. Ionosonde data show sporadic E present during growth period for event. Modeling results from Thermosphere‐Ionosphere...
The ionospheric total electron content (TEC) and scintillation (S4) over Ho Chi Minh City (HCM) was studied using the Global Positioning System (GPS). We analyzed GPS data during recent solar cycle 24 from 2009 to 2012. Some results show that both TEC in this area presented seasonal variations peaking on equinox months. vertical observed HCM is high unusually spring autumn equinoxes of 2011 but they seem agree with activity index. statistics their occurrence almost at night S4 index region...
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...
In January 2018, a Trimble NetR9 GNSS receiver was installed at International University - Vietnam National (IU-VNU), which is located 10°52'N, 106°48'E in Ho Chi Minh City (HCMC). The signals recorded from the are useful for studying ionospheric variations over this station as well magnetosphere-ionosphere coupling effects, therefore, we aim to preliminarily process and evaluate data new station. Based on obtained with receiver, first estimated total electron content (TEC) using...
The Hunga Tonga Volcano eruption launched a myriad of atmospheric waves that have been observed to travel around the world several times. These generated Traveling Ionospheric Disturbances (TIDs) in ionosphere, which are known adversely impact radio applications such as Global Navigation Satellite Systems (GNSS). One GNSS application is Precise Point Positioning (PPP), can achieve cm-level accuracy using single receiver, following typical convergence time 30 mins 1 hour. A network ionosondes...
We investigated a post-midnight Field-Aligned Irregularities (FAIs) event observed with the Equatorial Atmosphere Radar (EAR) at Kototabang (0.2°S, 100.3°E, dip lat. 10.4 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">o</sup> S) in Indonesia on night of 9 July 2010, using comprehensive dataset both neutral and plasma parameters. compared FAI echoes collocated 630 nm airglow depletion detected by an all-sky imager. The thermospheric winds...
Abstract Global Navigation Satellite System fast precise positioning can be achieved with accurate ionospheric corrections computed from an adequate number of GNSS stations in a local region. Our previous study showed that using 15 well-distributed within 5° latitude x 10° longitude region, regression model for achieve mean accuracy 5 cm. In low-latitude regions, the presence electron density gradients over short distances lead to outliers map and decrease its accuracy. this study, we...
Abstract The Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) Radio Occultation data has been previously used as a way of investigating the climatology Equatorial Plasma Bubbles (EPB). These low‐density regions can cause random phase amplitude scintillation satellite signals forecasting these is an important priority in space physics community. ability to build useful models depends on underlying sets testing validating models. Correctly identifying days EPB...