Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique
A new algorithm for improving Direction of Arrival Estimation (DOAE) accuracy has been carried out. Two contributions are introduced. First, Doppler frequency shift that resulted from the target movement is estimated using the displacement invariance technique (DIT). Second, the effect of Doppler f...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/135753 |
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| author | Youssef Fayad Caiyun Wang Qunsheng Cao Alaa El-Din Sayed Hafez |
| author_facet | Youssef Fayad Caiyun Wang Qunsheng Cao Alaa El-Din Sayed Hafez |
| author_sort | Youssef Fayad |
| collection | DOAJ |
| description | A new algorithm for improving Direction of Arrival Estimation (DOAE) accuracy has been carried out. Two contributions are introduced. First, Doppler frequency shift that resulted from the target movement is estimated using the displacement invariance technique (DIT). Second, the effect of Doppler frequency is modeled and incorporated into ESPRIT algorithm in order to increase the estimation accuracy. It is worth mentioning that the subspace approach has been employed into ESPRIT and DIT methods to reduce the computational complexity and the model’s nonlinearity effect. The DOAE accuracy has been verified by closed-form Cramér-Rao bound (CRB). The simulation results of the proposed algorithm are better than those of the previous estimation techniques leading to the estimator performance enhancement. |
| format | Article |
| id | doaj-art-572164fe328e4742a8d4629f9d2552f7 |
| institution | Kabale University |
| issn | 1687-5869 1687-5877 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Antennas and Propagation |
| spelling | doaj-art-572164fe328e4742a8d4629f9d2552f72025-02-03T01:12:07ZengWileyInternational Journal of Antennas and Propagation1687-58691687-58772015-01-01201510.1155/2015/135753135753Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance TechniqueYoussef Fayad0Caiyun Wang1Qunsheng Cao2Alaa El-Din Sayed Hafez3College of Electronic and Information Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Astronautics, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaCollege of Electronic and Information Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, ChinaFaculty of Engineering, Alexandria University, Alexandria 21615, EgyptA new algorithm for improving Direction of Arrival Estimation (DOAE) accuracy has been carried out. Two contributions are introduced. First, Doppler frequency shift that resulted from the target movement is estimated using the displacement invariance technique (DIT). Second, the effect of Doppler frequency is modeled and incorporated into ESPRIT algorithm in order to increase the estimation accuracy. It is worth mentioning that the subspace approach has been employed into ESPRIT and DIT methods to reduce the computational complexity and the model’s nonlinearity effect. The DOAE accuracy has been verified by closed-form Cramér-Rao bound (CRB). The simulation results of the proposed algorithm are better than those of the previous estimation techniques leading to the estimator performance enhancement.http://dx.doi.org/10.1155/2015/135753 |
| spellingShingle | Youssef Fayad Caiyun Wang Qunsheng Cao Alaa El-Din Sayed Hafez Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique International Journal of Antennas and Propagation |
| title | Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique |
| title_full | Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique |
| title_fullStr | Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique |
| title_full_unstemmed | Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique |
| title_short | Direction of Arrival Estimation Accuracy Enhancement via Using Displacement Invariance Technique |
| title_sort | direction of arrival estimation accuracy enhancement via using displacement invariance technique |
| url | http://dx.doi.org/10.1155/2015/135753 |
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