Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20713607p&link_type=abstract
American Astronomical Society Meeting 207, #136.07; Bulletin of the American Astronomical Society, Vol. 37, p.1389
Astronomy and Astrophysics
Astronomy
Scientific paper
The Long Wavelength Array (LWA) will consist of banks of 256 crossed dipole antennas whose signals are phased together into a single antenna "station" analogous to an individual VLA antenna. The arrangement of dipole elements within the station area is an important design issue as the configuration determines the power pattern of the station. Many different station configurations were studied including grids, spirals, random layouts, and designs that had been sidelobe optimized. The effects of varying station parameters such as the station size, minimum element seperation, number of elements, and positioning errors, were also examined. Configurations were evaluated through the use of metrics that quantify the power pattern, such as the beam efficiency, peak sidelobe level, and maximum effective area. A design minimizing the peak sidelobe level for all pointing angles of the station was recommended as the configuration for the LWA stations. The Long Wavelength Demonstrator Array (LWDA) station will be populated in two test and evaluation stages. The problem of finding an optimum subset for the initial 128 elements was also addressed. Basic research in radio astronomy at the Naval Research Laboratory is supported by the Office of Naval Research.
Cohen Seth A.
Kogan Leonid
Polisensky E. J.
No associations
LandOfFree
Station Configuration Studies for the The Long Wavelength Array does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Station Configuration Studies for the The Long Wavelength Array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Station Configuration Studies for the The Long Wavelength Array will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1286121