Results 121 to 130 of about 1,166 (180)

Principles of Mode-Selective MIMO OTHR

IEEE Transactions on Aerospace and Electronic Systems, 2013
In over-the-horizon radar (OTHR) the need to preferentially select propagation mode arises when one or more modes are perturbed by ionospheric disturbances. Due to mixed-mode propagation and range-elevation coupling, such control is only implementable using noncausal beamforming via MIMO radar architectures.
Ben Johnson, Gordon J Frazer, Yuri I Abramovich   +2 more
exaly   +3 more sources

The application of HBF in small aperture OTHR

2015 8th International Congress on Image and Signal Processing (CISP), 2015
Due to the decrease of azimuth resolution and array gain, the performance of small aperture over the horizon radar (OTHR) is not as good as the conventional OTHR. Therefore, it is necessary to find a new method to improve array performance of small aperture OTHR to satisfy the requirements of target detection.
Yu Jia
exaly   +2 more sources

An EM Algorithm for Multipath State Estimation in OTHR Target Tracking

IEEE Transactions on Signal Processing, 2014
Multi-path tracks of a single target exist in skywave over-the-horizon radar (OTHR) surveillance, due to the availability of multiple signal propagation paths through the ionosphere. Different from the traditional multipath data association and estimation methods for OTHR target tracking, a novel scheme for joint multipath data association and state ...
Hua Lan
exaly   +2 more sources