Microwave Photonic Reconfigurable High Precision Instantaneous Frequency Measurement System Assisted by Stacking Ensemble Learning Method

This paper reports a microwave photonic reconfigurable high precision simple instantaneous frequency measurement system. With the first assistance of stacking ensemble learning method, it can achieve high measurement accuracy over a wide bandwidth. For introducing electrical and optical delays, the range and accuracy of the instantaneous frequency measurement method can be flexibly adjusted to suit the needs of various scenarios. Sufficient and systematic experimental results show that from 11 GHz to 17 GHz, the average measurement error is 4.39 MHz. This simple system acquits reconfigurability and on-chip integration possibilities without dispersion elements, which reveals great potential in the future integrated array radar, detection, and other fields.