Shot noise statistics and information theory of sensitivity limits in frequency-modulated continuous-wave ladar

被引：23

作者：

Barber, Zeb W. ^{[1
]}

Dahl, Jason R. ^{[1
]}

Sharpe, Tia L. ^{[1
]}

Erkmen, Baris I. ^{[2
]}

机构：

[1] Montana State Univ, Spectrum Lab, Bozeman, MT 59717 USA

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2013年 / 30卷 / 07期

关键词：

LASER; LIDAR;

D O I：

10.1364/JOSAA.30.001335

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A theoretical analysis and experimental verification of the sensitivity limits of frequency-modulated continuous-wave (FMCW) ladar in the limit of a strong local oscillator is presented. The single-photon sensitivity of coherent heterodyne detection in this shot-noise dominated limit is verified to extend to linearly chirped waveforms. An information theoretic analysis is presented to estimate the information efficiency of received photons for the task of locating the range to single and multiple targets. It is found that the optimum receive signal level is proportional to the logarithm of the number of resolvable range locations and the maximum theoretical photon information efficiency for FMCW ranging with coherent fields is log(e) approximate to 1.44 bits per received photon. (C) 2013 Optical Society of America

引用

页码：1335 / 1341

页数：7

共 18 条

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