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Target location measurement by optical correlators: a performance criterion.

M Fleisher, U Mahlab, J Shamir

|August 19, 2010

Summary

Optical correlators used for target tracking can experience positioning errors due to noise and clutter. This study evaluates how spatial filter capabilities, correlation function shape, and noise influence these errors.

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Area of Science:

Optics
Signal Processing
Image Analysis

Background:

Optical correlators are crucial for target location and tracking applications.
Position estimation accuracy can be compromised by environmental factors like noise and interfering objects.

Purpose of the Study:

To analyze the factors contributing to positioning errors in optical correlator-based tracking.
To quantify the variance of positioning error based on system and environmental parameters.

Main Methods:

Evaluation of positioning error variance.
Analysis of spatial filter discrimination capabilities.
Assessment of correlation function shape impact.
Investigation of noise effects on estimation accuracy.

Main Results:

Positioning error variance is directly influenced by the spatial filter's ability to distinguish targets from background.
The shape of correlation functions significantly affects the precision of target localization.
Increased noise levels lead to a higher variance in position estimation.

Conclusions:

Understanding these dependencies is vital for improving the robustness of optical correlator systems.
Optimizing spatial filters and managing noise are key strategies for enhancing target tracking accuracy.