Open AccessLong range detection of line-array multi-pulsed coding lidar by combining the Accumulation coherence and Subpixel-energy detection method
Author(s) -
Jinshan Su,
Yuanqing Wang,
Dongdong Liang
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.015174
Subject(s) - subpixel rendering , optics , lidar , detector , coherence (philosophical gambling strategy) , photon counting , laser , optical coherence tomography , physics , pixel , computer science , quantum mechanics
This paper presents a multi-pulsed line-array push broom lidar, the pixel array scale reaches Geiger mode detectors in time-of-flight (TOF) depth imaging: by using time and space correlation between array elements of array avalanche photo detector (APD), light coding technology and a diode pumped solid-state laser with 10kHz repetition rate and 5µJ per pulses. Two signal enhancement methods, accumulation-coherence and high accuracy energy detection were combined improves the decode effect and realizes further long detection range. Experimental results and theory analysis indicating that the retrieval and denoising results of both simulated and real signals demonstrate that our method is practical and effective; what's more, the increasing scale of array sensor and the code bits can further improve system performance.