Electronic proximity fuse having multiple Doppler frequency chan

Details Electronic proximity fuse having multiple Doppler frequency chan Electronic proximity fuse having multiple Doppler frequency chan

1962-11-27

1976-03-16

Tubbesing, T. H.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

102 702P, F42C 1304

Patent

active

039450082

ABSTRACT:
1. A Doppler frequency responsive electronic proximity fuse comprising, in combination:
A. means for transmitting signals at at least two different frequencies and for receiving Doppler frequency signals which are reflected by a target;
B. means forming a first amplifier channel for amplifying only those Doppler frequency signals which are received when said transmitting-receiving means transmit at one of said two different frequencies;
C. means forming a second amplifier channel for amplifying only those Doppler frequency signals which are received when said transmitting-receiving means transmit at the other of said two different frequencies;
D. each of said amplifier channel means including an integrating stage and a threshold stage connected to the output of said integrating stage, so that each amplifier channel means produces an output signal only when the integrated Doppler frequency signal being amplified by the respective channel means exceeds a predetermined minimum amplitude, the integrating stage of at least one of said amplifier channel means being constituted by a filter circuit;
E. switch-over means connected to said transmitting-receiving means and to said first and second amplifier channel means for alternately causing (1) said transmitting-receiving means to transmit said one frequency and connecting said first amplifier channel means to the output of said transmitting-receiving means, and (2) said transmitting-receiving means to transmit said other frequency and connecting said second amplifier channel means to the output of said transmitting-receiving means; and
F. coincidence circuit means connected to the outputs of said two amplifier channel means for producing a triggering signal only when both of said amplifier channel means apply an amplified signal to said coincidence circuit means.

REFERENCES:
patent: 2952735 (1960-09-01), Weiss
patent: 2994060 (1961-07-01), Ross
patent: 3015819 (1962-01-01), Thourel
patent: 3018477 (1962-01-01), Brault
patent: 3046892 (1962-07-01), Cosse et al.
patent: 3123821 (1964-03-01), Huntoon
patent: 3131388 (1964-04-01), Baker
patent: 3614781 (1971-10-01), Lichtman
patent: 3821737 (1974-06-01), Kalmus

Affiliated with

Also associated with

Rating

Electronic proximity fuse having multiple Doppler frequency chan does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronic proximity fuse having multiple Doppler frequency chan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic proximity fuse having multiple Doppler frequency chan will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-296363