Analysis of variance - A statistical approach to pattern recognition and motion detection

Statistics – Applications

Scientific paper

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Analysis Of Variance, Moving Target Indicators, Pattern Recognition, Project Seti, Signal Detection, Signal To Noise Ratios, Algorithms, Antenna Radiation Patterns, Carrier Waves, Nasa Programs, Radio Telescopes

Scientific paper

The potential of the analysis of variance (ANOVA) as a pattern recognition tool is evaluated and two specific examples are presented. First, the two-way ANOVA as employed in NASA's Project Oasis - the design of a signal detector for the search for extraterrestrial intelligence (SETI) - is presented. In the Oasis design, ANOVA is capable of detecting non-random signals in an 8 million x 1000 matrix band of noisy signal data in quasi realtime. The presence of a signal with low signal-to-noise ratio is detected by the ANOVA by a rejection of the null hypothesis for certain row and/or column effects of compacted submatrices. In a somewhat analogous fashion, a three-way ANOVA is used to detect camouflaged moving targets. Targets not differentiable from their background by the eye can be detected by the ANOVA.

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