Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Proximity fuze
Patent
1975-12-04
1996-11-12
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Proximity fuze
G01S 1308
Patent
active
055744621
ABSTRACT:
A proximity detonator which derives its firing criterion from reflected beam measurements and thus obtains information about the radial relative velocity of the detonator with respect to its target object by evaluating the Doppler effect, wherein the firing signal is produced by a circuit including a function generator whose output voltage has a time sequence which corresponds to the decrease in radial relative velocity as the detonator approaches its target object (possibly under consideration of a correction value resulting from the firing law), a voltage controlled oscillator whose control input is connected to the output of the function generator, and a phase comparator having two signal inputs, one of which receives a Doppler signal which corresponds to the radial relative velocity and the other of which is connected to the output of the oscillator. The phase comparator compares the two input signals and emits the firing signal whenever the frequency of the Doppler signal is equal to the comparison frequency from the oscillator.
REFERENCES:
patent: 3900875 (1975-08-01), Scheets
patent: 3906493 (1975-09-01), Adrian et al.
patent: 3913485 (1975-10-01), Holmes et al.
patent: 3926121 (1975-12-01), McCracken
Fischer Leo
Schmucker Georg
Licentia-Patent Verwaltungs GmbH
Sotomayor John B.
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