We present a range-gating delayed detection super-resolution imaging lidar with high accuracy based on the signal intensities of three consecutive delay samples. The system combines the range and signal intensity information from multi-pulse detections to calculate the pulse peak position under the assumption of a Gaussian pulse shape. Experimental results indicate that the proposed algorithm effectively calculates pulse peak position and exhibits excellent accuracy with super-resolution. Accuracy analysis shows that accuracy is best improved by enhancing signal-to-noise ratio, strategically selecting samples, reducing pulse width, and appropriately choosing the delayed periods between samples.
© 2012 Chinese Optics Letters
(110.2970) Imaging systems : Image detection systems
(200.4560) Optics in computing : Optical data processing
(280.3400) Remote sensing and sensors : Laser range finder
(280.3640) Remote sensing and sensors : Lidar
Remote Sensing and Sensors
Long Wu, Yong Zhang, Lu Cao, Ning Zhao, Jie Wu, and Yuan Zhao, "Delayed range-gating super-resolution imaging lidar with high accuracy," Chin. Opt. Lett. 10, 122802-122802 (2012)