Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms
Multiple-input multiple-output (MIMO) radar equipped with a frequency diverse array (FDA) can produce a range-dependent beampattern and increase the degrees-of-freedom of the antenna array. In this paper, a new method of designing the MIMO radar beampattern with sparse frequency waveforms is propose...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/86834 http://hdl.handle.net/10220/44255 |
| _version_ | 1811682082498281472 |
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| author | Mai, Chaoyun Lu, Songtao Sun, Jinping Wang, Guohua |
| author2 | Temasek Laboratories |
| author_facet | Temasek Laboratories Mai, Chaoyun Lu, Songtao Sun, Jinping Wang, Guohua |
| author_sort | Mai, Chaoyun |
| collection | NTU |
| description | Multiple-input multiple-output (MIMO) radar equipped with a frequency diverse array (FDA) can produce a range-dependent beampattern and increase the degrees-of-freedom of the antenna array. In this paper, a new method of designing the MIMO radar beampattern with sparse frequency waveforms is proposed for the FDA, which randomly samples multiple distance points such that the MIMO radar beampattern with the both sparse frequency spectrum and constant modulus constraints are realized by the proposed beampattern design framework. The main steps are as follows. We first obtain the covariance matrix of the transmitted signal by a given ideal beampattern, and formulate the problem of designing the realizable beampattern as a nonconvex optimization problem, which includes the constraints of the both constant modulus of transmitted signals and sparse frequency spectrum. Then, a cyclic optimization algorithm is proposed, which guarantees the monotonic decrease of the objective function as the algorithm proceeds. The simulation results illustrate that the proposed method can achieve smaller errors than the traditional method, which does not consider the frequency diversity. |
| first_indexed | 2024-10-01T03:51:11Z |
| format | Journal Article |
| id | ntu-10356/86834 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:51:11Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/868342020-09-26T22:17:13Z Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms Mai, Chaoyun Lu, Songtao Sun, Jinping Wang, Guohua Temasek Laboratories Multiple-Input Multiple-Output (MIMO) Frequency Diverse Array (FDA) Multiple-input multiple-output (MIMO) radar equipped with a frequency diverse array (FDA) can produce a range-dependent beampattern and increase the degrees-of-freedom of the antenna array. In this paper, a new method of designing the MIMO radar beampattern with sparse frequency waveforms is proposed for the FDA, which randomly samples multiple distance points such that the MIMO radar beampattern with the both sparse frequency spectrum and constant modulus constraints are realized by the proposed beampattern design framework. The main steps are as follows. We first obtain the covariance matrix of the transmitted signal by a given ideal beampattern, and formulate the problem of designing the realizable beampattern as a nonconvex optimization problem, which includes the constraints of the both constant modulus of transmitted signals and sparse frequency spectrum. Then, a cyclic optimization algorithm is proposed, which guarantees the monotonic decrease of the objective function as the algorithm proceeds. The simulation results illustrate that the proposed method can achieve smaller errors than the traditional method, which does not consider the frequency diversity. Published version 2018-01-08T04:42:56Z 2019-12-06T16:29:54Z 2018-01-08T04:42:56Z 2019-12-06T16:29:54Z 2017 Journal Article Mai, C., Lu, S., Sun, J., & Wang, G. (2017). Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms. IEEE Access, 5, 17914-17926. https://hdl.handle.net/10356/86834 http://hdl.handle.net/10220/44255 10.1109/ACCESS.2017.2703647 en IEEE Access © 2017 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. 13 p. application/pdf |
| spellingShingle | Multiple-Input Multiple-Output (MIMO) Frequency Diverse Array (FDA) Mai, Chaoyun Lu, Songtao Sun, Jinping Wang, Guohua Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title | Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title_full | Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title_fullStr | Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title_full_unstemmed | Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title_short | Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms |
| title_sort | beampattern optimization for frequency diverse array with sparse frequency waveforms |
| topic | Multiple-Input Multiple-Output (MIMO) Frequency Diverse Array (FDA) |
| url | https://hdl.handle.net/10356/86834 http://hdl.handle.net/10220/44255 |
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