Frequency Diversity Array for DOA Estimation
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...
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Mehran University of Engineering and Technology
2017-10-01
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doaj-3822d9c7c89946c9851cf609f82743842020-11-25T00:56:26ZengMehran University of Engineering and TechnologyMehran University Research Journal of Engineering and Technology0254-78212413-72192017-10-013647978061609Frequency Diversity Array for DOA EstimationNAUMAN ANWAR BAIGMOHAMMAD BILAL MALIKMUHAMMAD ZEESHANThe 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.http://publications.muet.edu.pk/research_papers/pdf/pdf1609.pdfRadarDirection of ArrivalFrequency Diversity ArrayMaximum Likelihood Estimate, Range |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
NAUMAN ANWAR BAIG MOHAMMAD BILAL MALIK MUHAMMAD ZEESHAN |
spellingShingle |
NAUMAN ANWAR BAIG MOHAMMAD BILAL MALIK MUHAMMAD ZEESHAN Frequency Diversity Array for DOA Estimation Mehran University Research Journal of Engineering and Technology Radar Direction of Arrival Frequency Diversity Array Maximum Likelihood Estimate, Range |
author_facet |
NAUMAN ANWAR BAIG MOHAMMAD BILAL MALIK MUHAMMAD ZEESHAN |
author_sort |
NAUMAN ANWAR BAIG |
title |
Frequency Diversity Array for DOA Estimation |
title_short |
Frequency Diversity Array for DOA Estimation |
title_full |
Frequency Diversity Array for DOA Estimation |
title_fullStr |
Frequency Diversity Array for DOA Estimation |
title_full_unstemmed |
Frequency Diversity Array for DOA Estimation |
title_sort |
frequency diversity array for doa estimation |
publisher |
Mehran University of Engineering and Technology |
series |
Mehran University Research Journal of Engineering and Technology |
issn |
0254-7821 2413-7219 |
publishDate |
2017-10-01 |
description |
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. |
topic |
Radar Direction of Arrival Frequency Diversity Array Maximum Likelihood Estimate, Range |
url |
http://publications.muet.edu.pk/research_papers/pdf/pdf1609.pdf |
work_keys_str_mv |
AT naumananwarbaig frequencydiversityarrayfordoaestimation AT mohammadbilalmalik frequencydiversityarrayfordoaestimation AT muhammadzeeshan frequencydiversityarrayfordoaestimation |
_version_ |
1725227307467014144 |