2017
DOI: 10.1109/jphot.2017.2757960
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Angle-of-Arrival Estimation of Broadband Microwave Signals Based on Microwave Photonic Filtering

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Cited by 31 publications
(8 citation statements)
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“…(9) and (10) show the two output IF signals have the same amplitude. They also show the two output IF signal phase difference is β and is independent to ω s T. Under an ideal situation, the unwanted 1st order sidebands and the residual optical carriers are eliminated by the WDM and the FBG, i.e., α 1 and α 2 (ω o ±ω m ) are equal to 0, and for a small input microwave signal, the 2nd order sidebands have small amplitudes and can be ignored.…”
Section: Analysis and Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…(9) and (10) show the two output IF signals have the same amplitude. They also show the two output IF signal phase difference is β and is independent to ω s T. Under an ideal situation, the unwanted 1st order sidebands and the residual optical carriers are eliminated by the WDM and the FBG, i.e., α 1 and α 2 (ω o ±ω m ) are equal to 0, and for a small input microwave signal, the 2nd order sidebands have small amplitudes and can be ignored.…”
Section: Analysis and Discussionmentioning
confidence: 99%
“…Hence a calibration procedure is needed or the power of the microwave signal into the system needs to be measured prior to AOA measurement. Another AOA measurement approach is based on using a fibre optic delay line filter to produce notches in the system output electrical spectrum [9], [10]. The notch frequency, which is not affected by the power of the incoming microwave signal, can be used to obtain the microwave signal phase difference.…”
Section: Introductionmentioning
confidence: 99%
“…So far, a series of photonics systems to measure DFS [14][15][16][17][18][19][20] or AOA [21][22][23][24][25] have emerged. For example, [20] uses a parallel dual parallel Mach-Zehnder modulators (DPMZM) combing reference signal to measure DFS.…”
Section: Introductionmentioning
confidence: 99%
“…So far, a series of optical microwave DOA estimation methods have been proposed [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Among them, a classic approach is to transform the DOA estimation problem into a phase shift estimation problem by measuring the optical power.…”
Section: Introductionmentioning
confidence: 99%