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The Over-the-Horizon Radar (OTHR) is an effective approach for long-range target detection. However, most existing OTHR systems resort to receive array with quite large aperture, which makes them difficult to deploy. Based on the small aperture receive array, this paper presents a new architecture of long-range target detection system. The shortage of small aperture receive array on echo signal-to-noise...
Multiple-input Multiple-output (MIMO) radar is a new radar system which utilizes multiple antennas at both the transmitting side and the receiving side. In order to suppress the spread-Doppler sea clutter and eliminate the multipath and multimode clutter when detecting slow-moving ships, some OTHR researchers began to propose that applying the technology of MIMO radar to the next generation of sky-wave...
In communications, radar, sonar, and so forth, perfect arrays play fairly important roles. In this paper, we will investigate the construction methods of such arrays over the 8-QAM+ constellation. More clearly, for a given existing perfect ternary array (PTA), we will present two methods to convert it into an 8-QAM+ perfect array, depending on the existence of odd number in its size or not, respectively...
In order to overcome the cross polarization effect of conformal arrays, dual polarized array elements are used in this paper to optimize both the two orthogonal polarization components of the array pattern, simultaneously. The dual polarized antenna has two individual feed points to excite or receive the local co-polarized component and the cross-polarized component separately. Based on this feature,...
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