Photonic Angle-of-arrival Measurement of a Microwave Signal with Range Selectivity and SNR Enhancement
Abstract
A novel parallel optical delay detector (PODD) is proposed for angle-of-arrival (AOA) measurement of a microwave signal with selective measurement range and signal-to-noise (SNR) enhancement. The PODD is experimentally demonstrated by using a dual parallel Mach-Zehnder modulator. The noise robustness enhancement is experimentally investigated. Based on the proposed PODD, the measurement error for the full range can be less than 0.02 radian (0.71% of full measured range).
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