The ternary phase-amplitude filter (TPAF) is by definition restricted to the modulation values -1, 0, and 1, thus composing a binary phase-only filter (BPOF) multiplied by a binary- amplitude pattern, i.e., a region of support. The TPAF offers an attractive combination of real-time implementation with available devices and good correlation performance. Smart (optimized distortion-invariant) TPAF formulations have been developed. In applying smart filters, mixed optimizations are needed to address not only SNR (signal-to-noise) performance but other metrics addressing practical performance factors such as correlation efficiency. We have developed a design methodology that facilitates mixed optimizations and will report its application to two filter design cases involving a rotated and scaled target on several backgrounds.

Date Published: 1 November 1991
PDF: 13 pages
Proc. SPIE 1564, Optical Information Processing Systems and Architectures III, (1 November 1991); doi: 10.1117/12.49697

Published in SPIE Proceedings Vol. 1564:
Optical Information Processing Systems and Architectures III
Bahram Javidi, Editor(s)