Compact Real-Time Matched-Filter Optical Processor

J. R. Fienup; W. S. Co!burn; B. J. Chang; C. D. Leonard

doi:10.1117/12.955669

8 December 1977 Compact Real-Time Matched-Filter Optical Processor

J. R. Fienup, W. S. Co!burn, B. J. Chang, C. D. Leonard

Proceedings Volume 0118, Optical Signal and Image Processing; (1977) https://doi.org/10.1117/12.955669
Event: 21st Annual Technical Symposium, 1977, San Diego, United States

Abstract

A matched filter optical processor is described that is compact, lightweight, and operates in real time. The use of lightweight reflection hologram lenses as the Fourier transforming elements allows for compact folded light paths. The holographic optical elements were designed and analyzed using a holographic optics ray-tracing computer program (HOAD). It was predicted that compact holographic optics can perform satisfactorily for input imagery of moderate space-bandwidth product; high performance can be achieved if longer focal lengths (1 meter) are allowed. A photoconductor-thermoplastic (PTP) device at the input plane of the processor provides for real-time data insertion. Data is scanned or imaged from an incoherent source onto the PTP device, which forms a phase recording that modulates the coherent illumination at the processor input. The PTP device operates in real-time and can be erased and reused many times. Compact optical processors of the type described are particularly well suited to applications such as space vehicle data processing or terrain-matching for terminal guidance.

Citation Download Citation

J. R. Fienup, W. S. Co!burn, B. J. Chang, and C. D. Leonard "Compact Real-Time Matched-Filter Optical Processor", Proc. SPIE 0118, Optical Signal and Image Processing, (8 December 1977); https://doi.org/10.1117/12.955669

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available