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Non-iterative aberration correction of a multiple transmitter system
David J Rabb1, Jason W Stafford, Douglas F Jameson
1Air Force Research Laboratory – Sensors Directorate, Wright Patterson Air Force Base, OH 45433-7700, USA. david.rabb@wpafb.af.mil
Optics Express
|January 26, 2012
Summary
Multi-transmitter aperture synthesis enhances imaging by using multiple transmitter locations. This method directly corrects low-order aberrations like defocus, improving image quality without iterative algorithms.
Area of Science:
- Optical imaging
- Interferometry
- Signal processing
Background:
- Aperture synthesis techniques improve imaging resolution and sensitivity.
- Aberration correction is crucial for high-fidelity optical measurements.
- Iterative algorithms for aberration correction can be computationally intensive.
Purpose of the Study:
- To introduce and validate a novel multi-transmitter aperture synthesis method for direct aberration correction.
- To demonstrate the capability of correcting low-order aberrations, specifically defocus and toric curvature.
- To reduce the reliance on iterative computational methods for aberration correction.
Main Methods:
- Development of the theoretical framework for multi-transmitter aberration correction.
- Implementation of shearing interferometry principles for aberration analysis.
- Experimental validation using a multi-transmitter system to capture and process speckle fields.
Main Results:
- Successful direct measurement of defocus and toric curvature aberrations.
- Demonstration of improved effective aperture fill factor through speckle field shifting.
- Validation of the multi-transmitter approach for aberration correction.
Conclusions:
- Multi-transmitter aperture synthesis offers a direct and efficient method for correcting optical aberrations.
- Shearing interferometry-based approaches can simplify aberration determination.
- This technique has the potential to enhance various optical sensing and imaging applications.
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