Boots – shoes – and leggings
Patent
1984-07-05
1988-02-23
Harkcom, Gary V.
Boots, shoes, and leggings
G06F 738
Patent
active
047275049
ABSTRACT:
Apparatus for improving the signal-to-noise ratio of a weak signal corrupted by a larger additive noise signal. The apparatus includes an analog to digital converter for quantizing the received weak signal plus noise signal into a word of greater than 3-states. Solid state digital memory is provided for storing a finite string of the quantized weak signal plus noise. A digital processor determines the discrete probability domain characteristics of the noise and computes an optimum discrete transfer function for operating on the received signal plus noise based on the probability law of the noise. The processor also quantizes the optimum discrete transfer function into two or three states and operates on the string of quantized weak signal plus noise with the quantized optimum discrete transfer function. In this way, the signal-to-noise ratio of the weak signal is improved and the string of quantized weak signal plus noise is represented by 2- or 3-state words.
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Modestino et al., "Adaptive Detection of Weak Signals in Statistically Undefined Noise Backgrounds", Computer Processing in Communications, pp. 629-650, 1969.
Harkcom Gary V.
Shaw Dale M.
The Charles Stark Draper Laboratory Inc.
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