Proximity fuze jammer
First Claim
1. A method for predetonating missiles having proximity fuzes which radiate and receive electromagnetic energy comprising the steps of:
- receiving the electromagnetic radiation radiating from a fuze at a distance beyond the missile'"'"'s effective warhead range;
filtering the received signal to limit the signal to the fuze carrier and its modulated sidebands;
square wave modulating the filtered signal;
amplifying the modulated signal a first time;
amplifying the modulated signal a second time, linearly varying the phase of the second amplified signal, and retransmitting the signal to the fuze at a distance beyond the missile'"'"'s effective warhead range.
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Abstract
A system for jamming continuous wave radar type proximity fuzes used on surface-to-air missiles where the fuze requires an increase in return signal power level and a rapid frequency change for detonation. The system basically includes a receiver, amplifier, and transmitter. A received fuze signal is filtered and square wave modulated then sent to a first traveling wave tube for amplification. The signal is then amplified again by a second traveling wave tube which is modulated by a transit time modulator which continuously varies the phase shift through the tube in a linear fashion. The linear variation in phase shift is the equivalent of a displacement in the frequency signal being amplified. The signal is then reradiated to the missile giving the fuze a target sensing causing it to predetonate.
16 Citations
2 Claims
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1. A method for predetonating missiles having proximity fuzes which radiate and receive electromagnetic energy comprising the steps of:
- receiving the electromagnetic radiation radiating from a fuze at a distance beyond the missile'"'"'s effective warhead range;
filtering the received signal to limit the signal to the fuze carrier and its modulated sidebands;
square wave modulating the filtered signal;
amplifying the modulated signal a first time;
amplifying the modulated signal a second time, linearly varying the phase of the second amplified signal, and retransmitting the signal to the fuze at a distance beyond the missile'"'"'s effective warhead range.
- receiving the electromagnetic radiation radiating from a fuze at a distance beyond the missile'"'"'s effective warhead range;
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2. A system for predetonating missiles having proximity fuzes which radiate and receive electromagnetic energy comprising:
- means for receiving electromagnetic radiation emanating from a missile fuze beyond the effective range of the missile warhead, band pass filter means for selecting the desired frequency connected to the receiving means;
switching means for alternatively interrupting the signal connected to the filter;
multivibrator means connected to the switch means for a activating said means;
a first traveling wave tube connected to the switch means for amplifying the filtered signal;
a second traveling wave tube connected to said first tube;
means connected to said second tube for causing a linear phase shift in the signal as it is amplified thereby effectively frequency adjusting the received signal, and means for retransmitting the received signal.
- means for receiving electromagnetic radiation emanating from a missile fuze beyond the effective range of the missile warhead, band pass filter means for selecting the desired frequency connected to the receiving means;
Specification
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- Resources
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Current AssigneeUnited States Of America As Represented By The Secretary Of The Air Force
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Original AssigneeUnited States Of America As Represented By The Secretary Of The Air Force
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InventorsMarinaccio, Richard E., Meier, Ward M.
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Primary Examiner(s)Hubler, Malcolm F.
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Application NumberUS04/889,868Time in Patent Office3,227 DaysField of Search343/6.8, 343/6.8 LC, 343/7 PF, 343/18 EUS Class Current342/15CPC Class CodesG01S 7/38 Jamming means, e.g. produci...
