Author Affiliations
Abstract
State Key Laboratory of Modern Optical Instrument, National Engineering Research Center for Optical Instrument, Optical Engineering Department, Zhejiang University, Hangzhou 310027, China
Distance resolutions and noises are analyzed experimentally for long-range three-dimensional (3D) active imaging systems that have signal-to-noise ratios (SNRs) more optimal than 30:1. Findings indicate that the photon shot noise primarily determines the SNR. However, the active imaging method, which has a relatively low SNR, generates a relatively high distance resolution. To explain this phenomenon, a theory in which the distance resolution of 3D active imaging systems is determined by both the photon shot noise and the subinterval width is developed. Theoretical and experimental results differ by less than 4%.
三维 主动成像 散粒噪声 子区间 110.6880 Three-dimensional image acquisition 120.0280 Remote sensing and sensors Chinese Optics Letters
2011, 9(6): 061101