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Unmanned aircraft system (UAS) detection and assessment via temporal intensity aliasing
United States Patent
10,977,772 | |
April 13, 2021 | |
View the Complete Patent at the US Patent & Trademark Office | |
A method and system for temporal frequency analysis for identification of unmanned aircraft systems. The method includes obtaining a sequence of video image frames and providing a pixel from an output frame of the video; generating a fluctuating pixel value vector; examining the fluctuating pixel value vector over a period of time; obtaining the frequency information present in the pixel fluctuations; summing the frequency coefficients for the vectorized pixel values from the fluctuating pixel value vector; obtaining an image representing a two dimensional space based on the summed center frequency coefficients; generating a series of still frames equal to a summation of the center frequency coefficients for pixel variations; and combining the temporal information into spatial locations in a matrix to provide a single image containing the spatial and temporal information present in the sequence of video image frame. | |
16/ 141,385 | |
September 25, 2018 | |
1/1 | |
G06T 3/40 (20060101)G06T 3/00 (20060101) | |
;348/144 | |
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was developed under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in this invention. |