Now showing items 1-3 of 3
Impacts of solar activity on performance of the IRI-2012 model predictions from low to mid latitudes
This study investigates the impacts of solar activity on the performance of the latest release of International Reference Ionosphere (IRI) model version 2012 (IRI-2012) predictions during the ascending phase of solar ...
Validation of the IRI-2012 model with GPS-based ground observation over a low-latitude Singapore station
The ionospheric total electron content (TEC) in the low-latitude Singapore region (geographic latitude 01.37° N, longitude, 103.67° E, geomagnetic latitude 8.5° S) for 2010 to 2011 was retrieved using the data from global ...
A robust star identification algorithm with star shortlisting
A star tracker provides the most accurate attitude solution in terms of arc seconds compared to the other existing attitude sensors. When no prior attitude information is available, it operates in “Lost-In-Space (LIS)” ...