Title :
Spatially Waveform Diverse Radar: Perspectives for High Frequency OTHR
Author :
Frazer, Gordon J. ; Abramovich, Yuri I. ; Johnson, Bruce A.
Author_Institution :
Defence Sci. & Technol. Organ., Edinburgh
Abstract :
The application of multi-input multi-output (MIMO) radar concepts to HF over-the-horizon radar is considered to improve radar timeline management flexibility and to permit adaptivity on transmit. MIMO radar concepts in the literature are inconsistent and in this paper the taxonomy of MIMO radar is clarified and distinctions between different MIMO radar types drawn. The term "spatially waveform diverse radar" is introduced, and performance equivalences between element-space and beamspace orthogonality discussed. Finally, we outline significant constraints on the design of waveform sets for the case of transmit arrays where (at least for some part of the operational regime) the array inter-element spacing is less than one half wavelength.
Keywords :
MIMO systems; adaptive signal processing; diversity reception; radar signal processing; MIMO radar; adaptive processing algorithm; array inter-element spacing; beamspace orthogonality; element-space orthogonality; high-frequency OTHR; multiinput multioutput radar; over-the-horizon radar; radar timeline management flexibility; spatially waveform diverse radar; transmit arrays; Adaptive arrays; Australia; Frequency conversion; Frequency diversity; Hafnium; MIMO; Radar applications; Radar clutter; Resource management; Surveillance;
Conference_Titel :
Radar Conference, 2007 IEEE
Conference_Location :
Boston, MA
Print_ISBN :
1-4244-0284-0
Electronic_ISBN :
1097-5659
DOI :
10.1109/RADAR.2007.374247
