Optical Communication Technology, Volume. 47, Issue 3, 62(2023)
Two-dimension angle-of-arrival estimation scheme based on microwave photonic de-chirping reception
In order to overcome the influence of phase and noise on the current angle of arrival(AOA) measurement in the microwave photon field, and to achieve a wide range of AOA measurement in a two-dimensional plane, a two-dimension AOA estimation scheme based on microwave photonic de-chirping reception is proposed and experimentally demonstrated in this paper. At the receiver of this scheme, an L-shaped antenna with a fixed delay time method is used to estimate the one-dimensional AOA. The elevation angle and azimuth angle of two-dimension AOA can be obtained by using the one-dimensional AOA. The experimental results show that when the antenna spacing is 5 m and the signal-to-noise ratio of the input linear frequency modulation continuous signal is 10 dB or -7.8 dB, the estimation results of one-dimensional AOA of the proposed scheme have a wide range of characteristics, and the estimation error is less than 2° in the range of -79°~74°, at the same time, the calculated elevation angle and azimuth angle have high accuracy in a large range.
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YANG Shiming, LI Shangyuan, TAN Yixuan, DENG Huanjian, XIE Wei, LIU Qiang, ZHANG Zhenrong, GENG Minming. Two-dimension angle-of-arrival estimation scheme based on microwave photonic de-chirping reception[J]. Optical Communication Technology, 2023, 47(3): 62
Received: Aug. 8, 2022
Accepted: --
Published Online: Jan. 28, 2024
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