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Related Experiment Video

Updated: Jun 12, 2026

Video-oculography in Mice

Video-oculography in Mice

Published on: July 19, 2012

Optical spatial tracking using coherent detection in the pupil plane.

E A Swanson, G M Carter, D J Bernays

|June 18, 2010

Summary

This summary is machine-generated.

This study details a heterodyne spatial tracking system using pupil plane processing, offering advantages over focal plane methods. Experimental results validate a closed-loop tracking system, demonstrating its effectiveness.

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Area of Science:

Optical Engineering
Signal Processing
Aerospace Technology

Background:

Traditional focal plane processing in spatial tracking systems faces limitations.
Heterodyne detection offers potential improvements in sensitivity and accuracy.
Pupil plane processing presents an alternative approach for spatial tracking system design.

Purpose of the Study:

To describe design considerations for a heterodyne spatial tracking system employing pupil plane processing.
To compare the advantages of pupil plane processing over traditional focal plane processing.
To present experimental verification of the proposed system.

Main Methods:

Analysis of noise performance bounds.
Investigation of optimal and suboptimal local oscillator distributions.
Evaluation of pull-in performance characteristics.
Design and implementation of a one-axis closed-loop tracking system.

Main Results:

The heterodyne spatial tracking system utilizing pupil plane processing demonstrates significant advantages.
Noise performance is analyzed, and optimal local oscillator distributions are identified.
Pull-in performance is evaluated for various conditions.
Experimental verification confirms the system's capability in closed-loop spatial tracking.

Conclusions:

Pupil plane processing in heterodyne spatial tracking systems offers superior design considerations compared to focal plane methods.
The developed system shows promise for accurate and efficient spatial tracking.
Further applications beyond spatial tracking are identified, highlighting system versatility.