Loading...
Target Altitude Estimation in Over-the-Horizon Radar
Zhang, Yimin D. Ahmed, Ammar Himed, Braham
Zhang, Yimin D.
Ahmed, Ammar
Himed, Braham
Citations
Altmetric:
Genre
Journal article
Date
2022-01-20
Advisor
Committee member
Group
Department
Electrical and Computer Engineering
Permanent link to this record
Collections
Research Projects
Organizational Units
Journal Issue
DOI
http://dx.doi.org/10.1109/access.2022.3145023
Abstract
Doppler signatures of local multipath signals provide useful information for target altitude estimation in over-the-horizon radar surveillance. In this paper, we develop a method to improve the resolution of these multipath Doppler signatures and enable enhanced altitude estimation of aircraft target which maintains a constant altitude. Moreover, we consider the impact of ionospheric layer motion on target parameter estimation and show that target parameters can be estimated under both stationary as well as time-varying ionospheric layer conditions. In order to improve the resolution and estimation accuracy of the target parameters and ionosphere velocity with a significantly reduced complexity, we exploit a frequency focused transform to the de-chirped target signals for dimension reduction before applying a least absolute shrinkage and selection operator (LASSO)-based high-resolution spectrum estimation technique. The proposed strategy outperforms fractional Fourier transform and classical subspace-based frequency estimation methods with a much lower computational complexity. The effectiveness of the proposed approach is especially evident for challenging cases where the multipath signal components have spectrally close Doppler signatures. Simulation results confirm the effectiveness of the proposed method.
Description
Citation
Y. D. Zhang, A. Ahmed and B. Himed, "Target Altitude Estimation in Over-the-Horizon Radar," in IEEE Access, vol. 10, pp. 11260-11273, 2022, doi: 10.1109/ACCESS.2022.3145023.
Citation to related work
Institute of Electrical and Electronics Engineers (IEEE)
Has part
IEEE Access, Vol. 10
ADA compliance
For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu