Frequency Diversity Array for Doa Estimation.

Nauman Anwar Baig; Mohammad Bilal Malik; Muhammad Zeeshan

Author(s)

Nauman Anwar Baig Department of Electrical Engineering, College of Electrical & Mechanical Engineering, National University of Sciences & Technology, Pakistan

Mohammad Bilal Malik Department of Electrical Engineering, College of Electrical & Mechanical Engineering, National University of Sciences & Technology, Pakistan

Muhammad Zeeshan Department of Electrical Engineering, College of Electrical & Mechanical Engineering, National University of Sciences & Technology, Pakistan

Abstract

The localization of targets has been presented in this article. DOA (Direction of Arrival) is an important parameter to be determined by radar. The MLE (Maximum Likelihood Estimator) has been widely used to accurately and efficiently estimate the DOAs of multiple targets. The targets at different ranges result in a variation in amplitude of the received signals, so an MLE estimator has to operate at all ranges. For accurate results of DOA, the complex amplitudes of multiple targets should not be much different and also the prior information of Doppler and number of targets is required. In this paper, an approach is proposed which uses the classical 2D algorithm to estimate range, Doppler and number of targets and then FDA (Frequency Diversity Array) is used to focus power in a particular range. As a result, the MLE can get data from a particular range cell where all targets have almost same amplitude and thus MLE can accurately estimate the DOAs of multiple targets. Simulations and results have confirmed the effectiveness of proposed approach.

Publication Details

Page(s) 797-806

DOI DOI not available

Published Journal: Mehran University Research Journal of Engineering and Technology, Volume: 36, Issue: 4, Year: 2017

Request the full text from PASTIC

References

Chen , J.,Zhao , H.,Sun , X., 2014.“Joint 2D Direction-of-Arrival and Range Estimation for Nonstationary Sources”,International Journal of Antennas & Propagation, July -

Lee , C.M.,Yoon , K.S.,Lee , J.H.,Lee , K.K., 2001.Efficient Algorithm for Localising 3D Narrowband Multiple Sources”,IEE Proceedings in Radar, Sonar and Navigation 148 23 -26

Krim , H.,Viberg , M., 1996.,IEEE Signal Processing Magazine 13 67 -94

Bekkerman , I.,Ben-Gurion,Tabrikian, 2006.Target Detection and Localization Using MIMO Radars and Sonars”,IEEE Transactions on Signal Processing 10 -

Zhang , X.,Huang , Y.P.,Chen , C.,Li , J.,Xu , D., 2012.Reduced-Complexity Capon for Direction of Arrival Estimation in a Monostatic Multiple-Input MultipleOutput Radar”,Sonar & Navigation 6 796 -801

Chevalier , P.,Ferréol , A.,Albera , L., 2006.“HighResolution Direction Finding from Higher Order Statistics: The 2Q-MUSIC Algorithm”,IEEE Transactions on Signal Processing 54 2986 -97

Ober , P.B.,Deprettere , E.F.,A.J., 1991.Efficient Methods to Compute Azimuth and Elevation in High Resolution DOA Estimation”,International Conference on Acoustics, Speech, and Signal Processing 3349 -3352

Zhou , Q.C.,Gao , H.,Wang , F., 2012.“A High Resolution DOA Estimating Method Without Estimating the Number of Sources”, 25 233 -247

Schell , S.V.,Gardner , W.A., 1993., 10 -

Chevalier , P.,Ferréol , A.,Albera , L.,August, 2006.“HighResolution Direction Finding From Higher Order Statistics: The 2Q-MUSIC Algorithm”,IEEE Transactions on Signal Processing 54 -

Skolnik , M.,McGraw-Hill, 2001.Introduction to RADAR Systems”,3rd Edition -

Wang , Z.,Sinha , A.,Willett , P.,Bar-Shalom , Y.,July, 2004.Angle Estimation for Two Unresolved Targets with Monopulse Radar”,IEEE Transactions on Aerospace and Electronic Systems 40 -

Jun , W.,Jian , Y.,Xiaolin , Q., 2009.“A Practical Approach of Monopulse DOA Estimation for Multiple Unresolved Targets”, -

Blair , W.D.,Brandt-Pearce , M.,April, 2001.Monopulse DOA Estimation of Two Unresolved Rayleigh Targets”,IEEE Transactions on Aerospace and Electronic Systems 37 -

Tullsson , B.E., 1991.Monopulse Tracking of Rayleigh Targets: A Simple Approach”,IEEE Transactions on Aerospace and Electronics Systems 27 520 -531

Sherman , S.M.,Barton , D.K., 1984., -

Swindlehurst , A.L.,Stoica , P.,February, 1998.Maximum Likelihood Methods in Radar Array Signal Processing”,Proceedings of IEEE 86 -

Joe , C.,Chen , Ralph, E.H.,Kung , Y.,August, 2002.“MaximumLikelihood Source Localization and Unknown Sensor Location Estimation for Wideband Signals in the NearField”,IEEE Transactions on Signal Processing 50 -

October,Swerling , P., 1956.Maximum Angular Accuracy of a Pulsed Search Radar”,Proceedings of IRE 44 1146 -1155

Farina , A.,Gini , F.,Greco , M., 2002.DOA Estimation by Exploiting the Amplitude Modulation Induced by Antenna Scanning”,IEEE Transactions on Aerospace and Electronic Systems 38 1276 -1286

Richards , M.A., 2005.,McGraw Hill -

Antonik , P.,Wicks , M.C.,Grifûths , H.D.,Baker , C.J., 2006.,Proceedings of IEEE RADAR Conference -

Baizert , P.,Hale , T.B.,Temple , M.A.,Wicks , M.C., 2006.Forward-Looking Radar GMTI Beneûts using a Linear Frequency Diverse Array”,Electronics Letters, 26th October -

Wang , W.Q.,Shao, 2012.“A Flexible Phased-MIMO Array Antenna with Transmit Beamforming”,International Journal of Antennas and Propagation -

Farooq , J.,Temple , M.A.,Saville , M.A., 2008.Exploiting Frequency Diverse Array Processing to Improve SAR Image Resolution”,IEEE Radar Conference -

Greco , M.,Fortunati , S.,Gini , F., 2014.Maximum Likelihood Covariance Matrix Estimation for Complex Elliptically Symmetric Distributions under Mismatched Conditions”,Signal Processing 381 -386

Kay , S.M.,EnglewoodCliffs, 1993., -

Jones , A.M., 2007.,MS Thesis -