A new architecture for an integrated fully coherent radar-lidar system based on a single mode-locked laser is proposed and demonstrated. The lidar exploits a multi-frequency optical signal with tunable tones separation allowing a dynamic tradeoff among robustness and sensitivity of measurements. The radar that is based on photonics technologies employs the mode-locked laser for generating the radio frequency signals in the X-band and Ku-band, simultaneously with the lidar. Velocity measurements for different tones separation are demonstrated with good agreement among the values measured with the lidar and radar.
Scotti, F., Onori, D., Scaffardi, M., Lazzeri, E., Bogoni, A., & Laghezza, F. (2015). Multi-frequency lidar/radar integrated system for robust and flexible Doppler measurements. IEEE Photonics Technology Letters, 27(21), 2268-2271. https://doi.org/10.1109/LPT.2015.2461458