Radioaltimeter type of detector and a proximity fuse equipped wi

Details Radioaltimeter type of detector and a proximity fuse equipped wi Radioaltimeter type of detector and a proximity fuse equipped wi

1988-11-23

1990-11-27

Barron, Jr., Gilberto

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

Determining distance

Altimeter

342 68, 342200, G01S 1334, F42C 1304

Patent

active

049739670

ABSTRACT:
The invention relates to a radioaltimeter type detector comprising an oscillator-transmitter (10), a modulator (20) suitable for frequency modulating the oscillator-transmitter according to a given characteristic, a mixer receiving the signal from the oscillator-transmitter and a corresponding echo signal reflected by a target, and a discriminator circuit (50, 60) connected to the output from the mixer. According to the invention, the modulator (20) includes a digital memory (21) containing a series of values defining the frequency modulation characteristic of the oscillator-transmitter (10).

REFERENCES:
patent: 3798590 (1974-03-01), Jacobson et al.
patent: 3802343 (1974-04-01), Dahl
patent: 3874296 (1975-04-01), Hedemark
patent: 3938147 (1976-02-01), Kalmus
patent: 4040357 (1977-08-01), Saunders
patent: 4059052 (1977-11-01), Karr
patent: 4319244 (1982-03-01), Hirota et al.
patent: 4427981 (1984-01-01), Kyriakos
patent: 4449209 (1984-05-01), Zehner et al.
patent: 4620192 (1986-10-01), Collins
patent: 4672379 (1987-06-01), Bishop
Rabinowitz, et al "Applications of Digital Technology to Radar", Proc. IEEE, vol. 73, No. 2, Feb. 1985, pp. 325-339.

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