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Siren detector
This invention provides a siren detector capable of reliably detecting the sound of a siren while effectively discriminating against ambient street noises. More ...
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Computer controlled speakerphone for adapting to a communication line
FIG. 1 is a functional block representation of a computer controlled adaptive speakerphone 100 operative in accordance with the principles of the invention. As shown, ...
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Range gate walk-off of compressive radar
What is claimed is: 1. A range gate walk off device to be used as a countermeasure to radar reception, comprising: input terminal means for receiving enemy radar signals;...
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Efficient multi-resolution space-time adaptive processor
The need in the art is addressed by the image processing system and method of the present invention. In accordance with the inventive method, adapted for use in an ...
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Method for determining the spatial distribution of the traffic volume within a mobile radio communications network
OF PREFERRED EMBODIMENTS FIG. 1a illustrates schematically the organization of a cellular mobile radio communications network MRN comprising several radio cells RC1 to R...
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Radiocommunications equipment with a security calls mode, and extension unit forming part of such equipment
The invention thus proposes a radiocommunications equipment comprising a radio terminal adapted to calls with a public mobile telephony network supporting voice ...
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Two-way paging system having reverse channel message frequency authentication
A method of modifying reverse channel messages in a two-way paging system to authenticate reverse channel messages is disclosed. The intended frequency of the reverse ...
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Wide bandwidth ultra high stability FM telemetry transmitter
The wide bandwidth high stability FM transmitter of the present invention provides highly reliable and repeatable signal telemetry that is free from undesirable thermal ...
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Electronic countermeasure sequence timer
What is claimed is: 1. A random period time sequencer for causing the device to which it is coupled to pseudo-randomly alternate between its operating modes, comprising: ...
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Automatic reprogramming means for countermeasures system
OF THE PREFERRED EMBODIMENT Referring now to FIG. 1, there is illustrated thereby a block diagram of a countermeasures system incorporating the several features of the ...
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Telecommunications 
