Automatic Compensation For Array And Phasefront Distortion In Microwave Imaging

Bernard D. Steinberg

doi:10.1117/12.936130

15 April 1983 Automatic Compensation For Array And Phasefront Distortion In Microwave Imaging

Bernard D. Steinberg

Proceedings Volume 0422, 10th Intl Optical Computing Conf; (1983) https://doi.org/10.1117/12.936130
Event: 10th International Optical Computing Conference, 1983, Cambridge, United States

Abstract

This paper describes a wavefront compensator applicable to microwave imaging antennas that are so large as to be inevitably distorted. Measurements are made of the radiation field due to a single point source located in the general direction in which imaging is performed. Feed-back-controlled circuitry focuses the array upon, the source notwithstanding the unknown a priori distortions within the array. The paper concentrates upon tolerances and system limitations. An experimental example of a two-dimensional radar map with nearly dif-fraction limited resolution is given. The 3 cm wavelength array was 40 m in length and the element position errors exceeded 1 wavelength in all dimensions.

Citation Download Citation

Bernard D. Steinberg "Automatic Compensation For Array And Phasefront Distortion In Microwave Imaging", Proc. SPIE 0422, 10th Intl Optical Computing Conf, (15 April 1983); https://doi.org/10.1117/12.936130

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