Phase calibration for synthetic aperture imaging

Changwei Wang; Yuesong Jiang; Yuntao He; Li Liu

doi:10.1117/12.806451

13 October 2008 Phase calibration for synthetic aperture imaging

Changwei Wang, Yuesong Jiang, Yuntao He, Li Liu

Proceedings Volume 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment; 71280F (2008) https://doi.org/10.1117/12.806451
Event: Seventh International Symposium on Instrumentation and Control Technology, 2008, Beijing, China

Abstract

High-resolution imaging can be achieved by optical aperture synthesis. Using a sparse array of smaller aperture, one can synthesize an aperture with the resolution of the equivalent filled aperture while reducing the size and weight of system. The environment and vibration factors of synthetic aperture arrays lead to errors in phase measurement and cause a severe degradation in the image quality. Real time phase calibration of synthetic aperture arrays is very important to produce images of consistently good quality. Redundant spacings calibration allows continuous calibration of the instrument with errors without requiring the model of the source.

Citation Download Citation

Changwei Wang, Yuesong Jiang, Yuntao He, and Li Liu "Phase calibration for synthetic aperture imaging", Proc. SPIE 7128, Seventh International Symposium on Instrumentation and Control Technology: Measurement Theory and Systems and Aeronautical Equipment, 71280F (13 October 2008); https://doi.org/10.1117/12.806451

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KEYWORDS

Calibration

Phase measurement

Image quality

Point spread functions

Synthetic aperture imaging

Environmental sensing

Instrument modeling

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