Infrared and Laser Engineering, Volume. 47, Issue 10, 1030001(2018)
Self-compensation high-speed spatial wavefront modulator of down-looking synthetic aperture ladar
A high-speed phase modulation of down-looking synthetic aperture ladar was proposed. The spatially polarized beam was divided into two coaxial and polarization-orthogonal beams. In the orthogonal direction of travel, the two beams were modulated to sinusoidal phases, whose changing directions were contrary; in the travel direction, these two beams were modulated with different curvatures to a quadratic phase history, which was associated with position of the targets in slow-time axis. This modulation method has the function of automatic jitter compensation in the azimuthal direction, and can effectively prevent the platform jitter effects on imaging.
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Li Guangyuan, Sun Jianfeng, Zhou Yu, Lu Zhiyong, Zhang Guo, Xu Mengmeng, Zhang Bo. Self-compensation high-speed spatial wavefront modulator of down-looking synthetic aperture ladar[J]. Infrared and Laser Engineering, 2018, 47(10): 1030001
Category: 激光雷达技术
Received: May. 11, 2018
Accepted: Jun. 12, 2018
Published Online: Nov. 25, 2018
The Author Email: Guangyuan Li (ligy1990@163.com)