Target recognition

Details Target recognition Target recognition

1990-01-12

1990-11-20

Barron, Jr., Gilberto

Communications: directive radio wave systems and devices (e.g.,

Return signal controls radar system

Receiver

342192, 382 18, 382 39, G01S 7295, G06K 946, G06K 980

Patent

active

049721933

ABSTRACT:
Apparatus for recognizing a target such as a ship comprises a radar for successively sweeping the target to obtain input data representing the return amplitude from different target angles; a filter for selecting from the input data those significant ranges at which there is a significantly high amplitude; and a range difference compiler for identifying the frequency of occurrence of each of several range differences between pairs of the significant ranges, the most common range differences (expressed as a histogram) being representative of the distances between major reflectors on the target and thus distinctive of the target.

REFERENCES:
patent: 3896434 (1975-07-01), Sirven
patent: 4084148 (1978-04-01), Koshikawa
patent: 4323880 (1982-04-01), Lucas
patent: 4470048 (1984-09-01), Short, III
patent: 4603331 (1986-07-01), Wehner
patent: 4707697 (1987-11-01), Coulter et al.
patent: 4881079 (1989-11-01), Peregrim

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