Acta Optica Sinica, Volume. 40, Issue 4, 0428001(2020)
Synthetic Aperture Lidar Imaging Detection Based on Conformal Diffractive Optical System
Synthetic aperture lidar (SAL) can obtain high-resolution and high-data-rate images for remote target with small optical aperture under large forward squint angle condition. Thus, SAL can be an important mode of optic imaging detection. In this study, the working mode, system scheme, performance parameters, and key technologies of SAL with 100 mm diameter, 20 km detection range, and 0.05 m resolution are analyzed. A concept of a diffractive optical system conforming to the dome is proposed to reduce the aerodynamic influence and volume and weight of the equipment. The laser beam broadening and one-dimensional beam scanning method based on frequency scanning change is studied, and the beam pattern simulation results are presented by using the model of microwave phased array antenna. The results show that the SAL imaging detection technology based on curved-conformal diffractive optical system is feasible.
Get Citation
Copy Citation Text
Daojing Li, Xuan Hu, Kai Zhou, Yuan Yao, Ming Qiao. Synthetic Aperture Lidar Imaging Detection Based on Conformal Diffractive Optical System[J]. Acta Optica Sinica, 2020, 40(4): 0428001
Category: Remote Sensing and Sensors
Received: Aug. 23, 2019
Accepted: Oct. 21, 2019
Published Online: Feb. 17, 2020
The Author Email: Li Daojing (lidj@mail.ie.ac.cn)