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Effects of systematic phase errors on phase-only correlation.

R W Cohn, J L Horner

|October 12, 2010

Summary

This summary is machine-generated.

Phase errors in optical correlators reduce performance. A new model predicts correlation peak amplitude based on phase error, aligning with computer simulations for improved optical system design.

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Published on: April 12, 2014

Area of Science:

Optics and Photonics
Information Processing

Background:

Phase-only optical correlators are susceptible to performance degradation.
Deviations from ideal matched filter phase, caused by spatial light modulators and interface circuits, introduce systematic phase errors.

Purpose of the Study:

To model the impact of systematic phase errors on the correlation-peak amplitude in phase-only optical correlators.
To develop a predictive model for correlation performance under non-ideal phase conditions.

Main Methods:

Development of a mathematical model relating correlation-peak amplitude to phase error.
Approximation of correlation peak as a product of error phasors and average filter plane amplitude.
Validation of the model using computer simulations with gray-scale images.

Main Results:

The correlation peak amplitude is reasonably approximated by the developed model.
The model accurately predicts trends observed in computer simulations.
Systematic phase errors significantly impact correlator performance.

Conclusions:

The proposed model provides a valuable tool for understanding and predicting the effects of phase errors in optical correlators.
The findings can guide the design of more robust optical processing systems.
Minimizing phase errors is crucial for optimizing the performance of phase-only optical correlators.