Stereo CUTLASS - A new capability for the SuperDARN HF radars
1Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK
2Department of Communications Systems, Lancaster University, Bailrigg, Lancaster, LA1 4YR, UK
3now at: Space Science Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, UK
4Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan, S7N 5E2, Canada
5Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, Maryland, 20723-6099, USA
Abstract. The Super Dual Auroral Radar Network (SuperDARN), which consists of networks of HF radars surrounding the northern and southern poles, has proven to be an extremely successful experimental technique in a wide range of scientific areas. The basic design of the radars, which contributes to SuperDARN, has remained virtually unchanged since the first radar was built in the early 1980s. This paper presents the first results of a significant new development of the basic system. Termed "Stereo", this development involves the addition of a duplicate receive channel and makes use of the spare duty cycle available in the current transmitters. The Stereo system has been implemented on the two radars that form the Co-operative UK Twin Located Auroral Sounding System (CUTLASS), which are the easternmost pair of radars in the Northern Hemisphere SuperDARN chain. Instead of the standard 7 pulse sequence normally employed by the radars, two such pulse sequences are interleaved and transmitted at different frequencies separated by more than 15kHz. This development allows for the radar to run two entirely different experimental modes simultaneously. Here we describe the basic Stereo system and some of the early results. We also identify potential new experiments which could be run with Stereo to complement the existing standard SuperDARN radar.
Key words. Ionosphere (ionosphere-magnetosphere interactions; ionospheric irregularities; instruments and techniques)
Lester, M., Chapman, P. J., Cowley, S. W. H., Crooks, S. J., Davies, J. A., Hamadyk, P., McWilliams, K. A., Milan, S. E., Parsons, M. J., Payne, D. B., Thomas, E. C., Thornhill, J. D., Wade, N. M., Yeoman, T. K., and Barnes, R. J.: Stereo CUTLASS - A new capability for the SuperDARN HF radars, Ann. Geophys., 22, 459-473, doi:10.5194/angeo-22-459-2004, 2004.