A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements
A microwave photonic approach for measuring the angle of arrival (AOA) and frequency is proposed and experimentally demonstrated. The AOA-dependent phase difference and frequency of two received signals were mapped to intensity information through subtractive and differential operations, which were...
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| Format: | Article |
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MDPI AG
2025-04-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/5/423 |
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| author | Yunkun Luo Yang Jiang Jing Xu Xiaohong Lan Jinjian Feng Jiancheng Yu Qianyou Long Tingyi Jiang Hui Zhang Yu Wu |
| author_facet | Yunkun Luo Yang Jiang Jing Xu Xiaohong Lan Jinjian Feng Jiancheng Yu Qianyou Long Tingyi Jiang Hui Zhang Yu Wu |
| author_sort | Yunkun Luo |
| collection | DOAJ |
| description | A microwave photonic approach for measuring the angle of arrival (AOA) and frequency is proposed and experimentally demonstrated. The AOA-dependent phase difference and frequency of two received signals were mapped to intensity information through subtractive and differential operations, which were achieved by a delayed superposition structure with phase inversion. By measuring the output signal powers, both the phase difference and frequency of the two signals could be determined. The theoretical analysis results are given in detail. In this proof-of-concept experiment, the system had a phase difference measurement range of 340 degrees, with a maximum error of 2.9 degrees. The frequency measurement covered 1–10 GHz, with a maximum error of 2.2%. The proposed approach offers a straightforward method for measuring the AOA and frequency under the same configuration, which provides new insight into AOA- and frequency-measurement techniques. |
| format | Article |
| id | doaj-art-b83d4ba004494b78bd51e01e0ec2f332 |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-b83d4ba004494b78bd51e01e0ec2f3322025-08-20T01:56:35ZengMDPI AGPhotonics2304-67322025-04-0112542310.3390/photonics12050423A Flexible Photonic Method for Angle-of-Arrival and Frequency MeasurementsYunkun Luo0Yang Jiang1Jing Xu2Xiaohong Lan3Jinjian Feng4Jiancheng Yu5Qianyou Long6Tingyi Jiang7Hui Zhang8Yu Wu9College of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaCollege of Physics, Guizhou University, Guiyang 550025, ChinaA microwave photonic approach for measuring the angle of arrival (AOA) and frequency is proposed and experimentally demonstrated. The AOA-dependent phase difference and frequency of two received signals were mapped to intensity information through subtractive and differential operations, which were achieved by a delayed superposition structure with phase inversion. By measuring the output signal powers, both the phase difference and frequency of the two signals could be determined. The theoretical analysis results are given in detail. In this proof-of-concept experiment, the system had a phase difference measurement range of 340 degrees, with a maximum error of 2.9 degrees. The frequency measurement covered 1–10 GHz, with a maximum error of 2.2%. The proposed approach offers a straightforward method for measuring the AOA and frequency under the same configuration, which provides new insight into AOA- and frequency-measurement techniques.https://www.mdpi.com/2304-6732/12/5/423microwave photonicsangle of arrivalfrequency measurementdifferential operation |
| spellingShingle | Yunkun Luo Yang Jiang Jing Xu Xiaohong Lan Jinjian Feng Jiancheng Yu Qianyou Long Tingyi Jiang Hui Zhang Yu Wu A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements Photonics microwave photonics angle of arrival frequency measurement differential operation |
| title | A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements |
| title_full | A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements |
| title_fullStr | A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements |
| title_full_unstemmed | A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements |
| title_short | A Flexible Photonic Method for Angle-of-Arrival and Frequency Measurements |
| title_sort | flexible photonic method for angle of arrival and frequency measurements |
| topic | microwave photonics angle of arrival frequency measurement differential operation |
| url | https://www.mdpi.com/2304-6732/12/5/423 |
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