Extraction of radar targets from clutter

Details Extraction of radar targets from clutter Extraction of radar targets from clutter

1989-02-27

1990-03-06

Tarcza, Thomas H.

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

Clutter elimination

342 21, 342 63, 342160, 342189, G01S 728

Patent

active

049070010

ABSTRACT:
The extraction of radar targets, in particular airplanes or cruise missiles, from clutter is typically based on the target's velocity relative to the ground. Equipment using this principle is usually referred to as a doppler processor or moving target indicator. In situations where severe clutter is encountered, as for example where a look-down radar is trying to find low-flying cruise missiles, extraction of the target solely through its velocity relative to the ground is generally unsatisfactory. A similarly situated human observer looking down can recognize a target both from its motion and the characteristic shape of a fuselage with wings. The principle of this "shape recognition" or "pattern recognition" is here applied to radar by utilizing the so-called radar signature of the target. The conventional small-relative-bandwidth radar which uses signals that are amplitude modulated onto a sinusoidal carrier does not yield enough of a radar signature for this application but the so-called "carrier-free radar" does. Carrier-free radar is also known as "impulse radar", "nonsinusoidal radar", or "large-relative-bandwidth radar".

REFERENCES:
patent: 3478354 (1969-11-01), Foster et al.
patent: 3879728 (1875-04-01), Wolff
patent: 3974328 (1976-08-01), Thomas et al.
patent: 4062010 (1977-12-01), Young et al.
patent: 4084148 (1978-04-01), Koshikawa
patent: 4103847 (1978-08-01), Thomas et al.
patent: 4117481 (1978-09-01), Constant
patent: 4119968 (1978-10-01), Goldfischer
patent: 4164728 (1979-08-01), Marsh
patent: 4175285 (1979-11-01), Dansac et al.
patent: 4179693 (1979-12-01), Evans et al.
patent: 4346382 (1982-08-01), Bosc et al.
patent: 4347511 (1982-08-01), Hofmann et al.
patent: 4348674 (1982-09-01), Muth et al.
patent: 4389647 (1983-06-01), Fanuele et al.
patent: 4396903 (1983-08-01), Habicht et al.
patent: 4415898 (1983-11-01), Gaunaurd et al.
patent: 4483017 (1984-11-01), Hampel et al.
patent: 4484193 (1984-11-01), Bellew
patent: 4490718 (1984-12-01), Opitz et al.
patent: 4490719 (1984-12-01), Botwin et al.
patent: 4495580 (1985-01-01), Keearns
patent: 4514733 (1985-04-01), Schmidtlein et al.
patent: 4584646 (1986-04-01), Chan et al.
patent: 4602336 (1986-07-01), Brown
patent: 4603331 (1986-07-01), Wehner
patent: 4635058 (1987-01-01), Sutphin, Jr.
patent: 4641137 (1987-02-01), Opitz et al.
patent: 4641138 (1987-02-01), Opitz
patent: 4673940 (1987-06-01), Barley et al.
patent: 4675677 (1987-06-01), von Maydell et al.
patent: 4698635 (1987-10-01), Hilton et al.
patent: 4700307 (1987-10-01), Mons et al.
patent: 4715005 (1987-12-01), Heartz
patent: 4803489 (1989-02-01), Giori
patent: 4829306 (1989-05-01), Gjessing et al.

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