Ionospheric Structure from GPS and Radar Observations for Radio Array Calibration.

Details Ionospheric Structure from GPS and Radar Observations for Radio Array Calibration. Ionospheric Structure from GPS and Radar Observations for Radio Array Calibration.

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsa13a1062s&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SA13A-1062

Other

2435 Ionospheric Disturbances, 2441 Ionospheric Storms (7949), 2443 Midlatitude Ionosphere, 2481 Topside Ionosphere, 2494 Instruments And Techniques

Scientific paper

As part of the development of the Murchison Widefield Array (MWA) for solar, heliospheric and ionospheric observations, GPS receivers will be deployed at the site in Western Australia to assist in the calibration of the array. The MWA will operate in the frequency range of 80 to 300 MHz where ionospheric effects are the primary limiting factor for the array's measurement accuracy of Faraday rotation and other remote sensing techniques that will be applied. In preparation for the deployment, three GPS receivers (Model GSV4004B) were operated at Haystack Observatory during the month of December 2006 in conjunction with the Millstone Hill Incoherent Scatter Radar (ISR). High resolution time variations of total electron content (TEC) from GPS and ISR for a geomagnetically-quiet period (Dec 7, 2006) and during storm conditions (Dec 14, 2006) have been compared revealing excellent agreement between the instruments as well as providing estimates of plasmaspheric content and small scale structure induced by gravity wave and auroral disturbance effects. In the analysis of the GPS data, initial estimates were made of the effects of temperature on GPS receiver calibration and will be reported in this paper. This research was supported by NSF; the GPS receivers were provided courtesy of AFRL/AFOSR.

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