A Simple Approach for Simultaneous Measurement of Instantaneous Frequency and Angle of Arrival

• Published in: IEEE transactions on instrumentation and measurement Vol. 73; pp. 1 - 8
• Main Authors: Wang, Ruiqiong, Fan, Yangyu, Zhai, Weile, Tan, Jiajun, Pang, Xiaoyan, Gao, Yongsheng
• Format: Journal Article
• Language: English
• Published: IEEE 2024
• Subjects: Adaptive optics; Angle of arrival (AOA); Frequency measurement; instantaneous frequency measurement (IFM); microwave photonic; Optical filters; Optical modulation; Optical polarization; Optical variables measurement; Power measurement; Sagnac loop

A microwave photonic instantaneous frequency and angle of arrival (AOA) measurement method based on a Sagnac loop is proposed and demonstrated in this article. By establishing a monotonic relationship between the phase difference and the dc amplitude, an amplitude comparison function (ACF) is constr...