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Title: Signal signatures of topographic features using analog technology
Authors: Chen, Pi-Fuay.
Seemuller, William W.
Keywords: Topographic feature extraction,
Orthogonal functions
Solid state sensor arrays
Walsh transforms
Publisher: U.S. Army Engineer Topographic Laboratories.
Engineer Research and Development Center (U.S.)
Series/Report no.: ETL ; 0185.
Description: Research note
Abstract: Signa1 signatures and signatures of various spectral decompositions of selected topographic features, such as line roads, road intersections, and rectangular buildings, were developed by using analog signal processing techniques. The signal signatures were constructed in the spatial domain, and the corresponding signatures of various spectral components were obtained in the Walsh transform domain. An electronic system for generating two-dimensional Walsh functions for decomposition of topographic features was designed and built. A scheme for detecting the decomposed spectral components using an analog processor was presented.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Research Note

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