BROADBAND MULTI-CHANNEL DETECTOR WITH SIGNAL AND JAMMING DISCRIMINATION
First Claim
1. A method of determining whether a jamming signal strength is adequate, comprising:
- receiving at least a first signal;
determining a first signal first noise power level, said first signal first noise power level being a power level of said first signal in a first range of frequencies;
determining a first signal second noise power level, said first signal second noise power level being a power level of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies; and
calculating a first signal second noise power level/first noise power level ratio, said first signal second noise power level/first noise power level ratio being equal to said first signal second noise power level divided by said first signal first noise power level.
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Accused Products
Abstract
Methods of determining whether a jamming signal strength is adequate, comprising receiving a signal, determining first and second noise power levels of the signal in first and second ranges of frequencies, the first range being broader than and encompassing the second range, and calculating a ratio of the second noise power level divided by the first noise power level. Also, methods of determining whether a jamming signal strength is adequate, comprising receiving a signal, determining a phase difference between first and second frequency range phases of the signal, and calculating a statistical mean and/or a standard deviation of the phase difference. Also, systems for determining whether a jamming signal is adequate, computer-readable media for determining whether jamming signal strength is adequate, systems comprising means for transmitting a jamming signal, and systems comprising means for transmitting and receiving waveforms to users in the presence of protective jamming.
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Citations
49 Claims
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1. A method of determining whether a jamming signal strength is adequate, comprising:
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receiving at least a first signal;
determining a first signal first noise power level, said first signal first noise power level being a power level of said first signal in a first range of frequencies;
determining a first signal second noise power level, said first signal second noise power level being a power level of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies; and
calculating a first signal second noise power level/first noise power level ratio, said first signal second noise power level/first noise power level ratio being equal to said first signal second noise power level divided by said first signal first noise power level. - View Dependent Claims (2, 3, 4, 5, 6, 27, 44, 45)
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7. A method of determining whether a jamming signal strength is adequate, comprising:
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receiving at least a first signal;
determining a first signal first noise power level, said first signal first noise power level being a power level of said first signal in a first range of frequencies; and
for each of a plurality of additional ranges of frequencies;
determining a first signal additional range noise power level, said first signal additional range noise power level being a power level of said first signal in said additional range of frequencies, said first range of frequencies being broader than and encompassing each of said plurality of additional ranges of frequencies; and
calculating a first signal additional range noise power level/first signal first noise power level ratio, said first signal additional range noise power level/first signal first noise power level ratio being equal to said first signal additional range noise power level divided by said first signal first noise power level. - View Dependent Claims (8, 9)
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10. A method of determining whether a jamming signal strength is adequate, comprising:
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receiving at least a first signal;
determining a phase difference between a first signal first frequency range phase and a first signal second frequency range phase, said first signal first frequency range phase being a first direct current indication of a phase of said first signal in a first range of frequencies, said first signal second frequency range phase being a second direct current indication of a phase of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies, by subtracting said second direct current indication from said first direct current indication; and
calculating a statistical mean of said phase difference and a standard deviation of said phase difference. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 46, 47, 48, 49)
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28. A system for determining whether a jamming signal is adequate, said system comprising:
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at least one RF antenna;
at least one RF signal detector;
means for determining a first noise power level, said first noise power level being a power level of a signal in a first range of frequencies;
means for determining a second noise power level, said second noise power level being a power level of said signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies; and
means for calculating a second noise power level/first noise power level ratio for said signal, said first signal second noise power level/first noise power level ratio being equal to said second noise power level divided by said first noise power level. - View Dependent Claims (29, 30)
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31. A system for determining whether a jamming signal is adequate, said system comprising:
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at least one RF antenna;
at least one RF signal detector;
means for determining a first noise power level, said first noise power level being a power level of a first signal in a first range of frequencies;
means for determining, for each of a plurality of additional ranges of frequencies, an additional range noise power level, said additional range noise power level being a power level of said first signal in said additional range of frequencies, said first range of frequencies being broader than and encompassing each of said plurality of additional ranges of frequencies; and
means for calculating, for each of said plurality of additional ranges of frequencies, an additional range noise power level/first noise power level ratio, said additional range noise power level/first noise power level ratio being equal to said additional range noise power level divided by said first noise power level. - View Dependent Claims (32, 33)
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34. A system for determining whether a jamming signal strength is adequate, said system comprising:
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at least one RF antenna;
at least one RF signal detector;
means for receiving at least a first signal and a second signal;
means for determining a phase difference between a first signal first frequency range phase and a first signal second frequency range phase, said first signal first frequency range phase being a first direct current indication of a phase of said first signal in a first range of frequencies, said first signal second frequency range phase being a second direct current indication of a phase of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies, by subtracting said second direct current indication from said first direct current indication; and
means for calculating a statistical mean of said phase difference and a standard deviation of said phase difference. - View Dependent Claims (35, 36, 37, 38)
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39. A computer-readable medium having computer-executable commands for:
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determining first noise power level of a first signal, said first noise power level being a power level of said first signal in a first range of frequencies;
determining a first signal second noise power level, said first signal second noise power level being a power level of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies; and
calculating a first signal second noise power level/first noise power level ratio, said first signal second noise power level/first noise power level ratio being equal to said first signal second noise power level divided by said first signal first noise power level.
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40. A computer-readable medium having computer-executable commands for:
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determining a first noise power level of a first signal, said first noise power level being a power level of said first signal in a first range of frequencies; and
for each of a plurality of additional ranges of frequencies;
determining a first signal additional range noise power level, said first signal additional range noise power level being a power level of said first signal in said additional range of frequencies, said first range of frequencies being broader than and encompassing each of said plurality of additional ranges of frequencies; and
calculating a first signal additional range noise power level/first signal first noise power level ratio, said first signal additional range noise power level/first signal first noise power level ratio being equal to said first signal additional range noise power level divided by said first signal first noise power level.
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41. A computer-readable medium having computer-executable commands for:
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receiving at least a first signal and a second signal;
determining a phase difference between a first signal first frequency range phase and a first signal second frequency range phase, said first signal first frequency range phase being a first direct current indication of a phase of said first signal in a first range of frequencies, said first signal second frequency range phase being a second direct current indication of a phase of said first signal in a second range of frequencies, said first range of frequencies being broader than and encompassing said second range of frequencies, by subtracting said second direct current indication from said first direct current indication; and
calculating a statistical mean of said phase difference and a standard deviation of said phase difference.
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42. A system comprising:
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a low power RF transceiver;
a broadband RF antenna;
means for transmitting a jamming signal in response to a measured threshold crossing.
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43. A system comprising:
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a low power RF transceiver;
a broadband RF antenna; and
means for transmitting and receiving service-approved communications waveforms to at least one user in the presence of protective jamming.
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Specification