ASTRA - Atmospheric & Space Technology Research Associates, LLC

Space Physics Research &Development

Atmospheric Modeling of Earth and Mars

ASTRA’s world class modeling capabilities include two global first-principles fully-coupled ionosphere-thermosphere models, one for Earth ( TIME-GCM) and one for Mars ( ASPEN-Mars). In addition, ASTRA also uses IRI, MSIS, radio raytracing packages, and trajectory analysismodels.

Assimilative Mapping of Ionospheric Electrodynamics

ASTRA routinely runs two data assimilation models. The AMIE (Assimilative Mapping of Ionospheric Electrodynamics)model, ingests electrodynamics data from a wide range of sources to produce a realistic representation of the high latitude electrodynamic state for a given time. IDA4Dis a procedure which combines model output with actual measurement data and organizes the data into spatial maps of electron density via an objective analysis technique.

Click to review TIMED information

TIMED, GRACE and CHAMP Satellite Data Analysis

At the center of ASTRA’s research is high quality data analysis on a wide range of data sets, including neutral and electron density data from the TIMED, GRACE, and CHAMP satellites. ASTRA is also involved in the data processing and analysis of doppler shift data (from TIDDBIT) for the study of TIDs. We are also working with Field Aligned Currentdata to better understand magnetosphere ionosphere coupling.

Satellite Remote Sensing

ASTRA is involved in the development of various kinds of instrumentation including HF radars, HF radio and GPS systems, and satellite remote sensing. These systems are being used to understand and specify the ionosphere and thermosphere.

TIDDBIT HF Doppler Radar

ASTRA is using the TIDDBIT (Traveling Ionospheric Disturbance Detector Built in Texas) radar to investigate the sources, propagation and dissipation of gravity waves, and their effects on the ionosphere.

Mars Data Analysis

ASTRA is analyzing data from several Mars satellite missions, including Mars Global Surveyor, Mars Pathfinder, Viking, and Mars Odyssey.