Additive noise effect in digital phase detection

被引：118

作者：

Surrel, Y

机构：

[1] The Department of Mechanical and Materials Engineering, É cole des Mines de St-Étienne, St. Etienne, 42023, 158, cours Fauriel

来源：

APPLIED OPTICS | 1997年 / 36卷 / 01期

关键词：

D O I：

10.1364/AO.36.000271

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The characteristic polynomials associated with the algorithms used in digital phase detection are used to investigate the effects of additive noise on phase measurements. First, it is shown that a loss factor eta can be associated with any algorithm. This parameter describes the influence of the algorithm on the global signal-to-noise ratio (SNR). Second, the Variance of the phase error is shown to depend mainly on the global SNR. The amplitude of a modulation of this variance at twice the signal frequency depends on a single parameter beta. The material presented here extends previously published results, and as many as 19 algorithms are analyzed. (C) 1997 Optical Society of America

引用

页码：271 / 276

页数：6

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