Abstract:
Sky-wave over-the-horizon (OTH) radar uses ionosphere reflection and refraction to detect and estimate targets under the effects of multipath propagation and ionospheric ...Show MoreMetadata
Abstract:
Sky-wave over-the-horizon (OTH) radar uses ionosphere reflection and refraction to detect and estimate targets under the effects of multipath propagation and ionospheric contamination. In this paper we present an analysis of joint estimation of target state (ground range and velocity) and ionospheric contamination in an OTH radar which employs multi-input multi-output (MIMO) technique, called MIMO-OTH radar. MIMO-OTH radar bears severe multipath effect since it transmits multiple orthogonal waveforms with various carrier frequencies, resulting in multiple propagation paths as well as ionospheric contamination. The sophisticated multi-quasi-parabolic (MQP) model is employed to characterize the ionosphere and deduce multipath propagation. We develop receive signal model for a complex Gaussian target moving on the sea, in two-dimensional plane of elevation. The maximum-likelihood (ML) estimate is analyzed for jointly estimating target state and ionospheric contamination, and the joint CRB is derived.
Published in: 2014 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
Date of Conference: 15-17 December 2014
Date Added to IEEE Xplore: 26 October 2015
ISBN Information:
Print ISSN: 2162-7843