Computer-Generated Holograms For Simulating Experiments Of Coherent Doppler Tomography

J. S. Hu; G. D. Zhang

doi:10.1117/12.937147

26 October 1983 Computer-Generated Holograms For Simulating Experiments Of Coherent Doppler Tomography

J. S. Hu, G. D. Zhang

Proceedings Volume 0437, Intl Conf on Computer-Generated Holography; (1983) https://doi.org/10.1117/12.937147
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

Abstract

In recent years, we and others have developed a type of reflective tomography based on coherent processing of Doppler frequency shifted echoes from rotating objects. The objects are placed in the Fraunhofer region and irradiated with microwave as they rotate. The returned signals are coherently processed by optical means and highly-resolved, two-dimentional cross-sectional images can be reconstructed. Holographic character is apparent in the processed data. The holograms can have either a rectangular or a polar format. We have completed the experiments using both simulated objects and measured data. To produce images we first make the holograms as data film using computer, and then irradiate the computer-generated holographic data film with He-Ne laser in our optical processor. Thus, the images of the simulated objects can be obtained. We have made both binary holograms and grey holograms with 64 grey scales using computer.

Citation Download Citation

J. S. Hu and G. D. Zhang "Computer-Generated Holograms For Simulating Experiments Of Coherent Doppler Tomography", Proc. SPIE 0437, Intl Conf on Computer-Generated Holography, (26 October 1983); https://doi.org/10.1117/12.937147

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