Microwave Photonic Direction-Finding Spectrometer
| Author(s) | Beardell, William L. | |
| Author(s) | Ryan, Conor J. | |
| Author(s) | Schneider, Garrett J. | |
| Author(s) | Murakowski, Janusz | |
| Author(s) | Prather, Dennis W. | |
| Date Accessioned | 2023-06-02T17:05:52Z | |
| Date Available | 2023-06-02T17:05:52Z | |
| Publication Date | 2023-05-15 | |
| Description | This article was originally published in Journal of Lightwave Technology. The version of record is available at: https://doi.org/10.1109/JLT.2023.3242627 | |
| Abstract | In this paper, we propose an architecture wherein the radio-frequency (RF) field at the antenna array is up-converted to an optical carrier and passed through an array of optical fibers, after which an analog Fourier transform is taken in a free-space optical processor. Through the use of multiple temporal dispersion projections, implemented through varied-length optical fiber segments, the locations of RF sources in three-dimensional space spanning angle-of-arrival (AoA) and instantaneous frequency may be determined on a millisecond time scale using commercial computing hardware after detection by a charge-coupled device (CCD) camera. We present a mathematical formulation of the problem, followed by simulated and experimental results showing three-dimensional spatial-spectral localization through the solution to a system of equations brought forth through the use of Fourier optics to process the RF field. | |
| Sponsor | This work was supported by the Air Force Research Laboratory contract under Grant FA8750-18-C-0182. | |
| Citation | W. L. Beardell, C. J. Ryan, G. J. Schneider, J. Murakowski and D. W. Prather, "Microwave Photonic Direction-Finding Spectrometer," in Journal of Lightwave Technology, vol. 41, no. 10, pp. 3057-3064, 15 May, 2023, doi: 10.1109/JLT.2023.3242627. | |
| ISSN | 1558-2213 | |
| URL | https://udspace.udel.edu/handle/19716/32818 | |
| Language | en_US | |
| Publisher | Journal of Lightwave Technology | |
| dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
| Keywords | optical signal processing | |
| Keywords | microwave photonics | |
| Keywords | millimeter wave communication | |
| Keywords | multispectral imaging | |
| Keywords | spatial diversity | |
| Title | Microwave Photonic Direction-Finding Spectrometer | |
| Type | Article |
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