Abstract:
An apparatus (100) includes a canine harness (101) with a radio frequency inhibitor (400). A leash (1002) can serve as a control device (102). The leash can selectively mechanically couple to the canine harness and electrically couple an actuator (114) to the radio frequency inhibitor. When the actuator is actuated, the radio frequency inhibitor is to emit one or more radio frequency inhibition signals (405), which can include the emission of all programmed signals simultaneously. Radio frequency inhibitors can also be integrated into clothing or armor (1802), as well as equipment (1901). The radio frequency inhibitor can interrupt, suppress, or halt electronic detonation communications to an explosive device.
Abstract:
Die Erfindung betrifft ein Verfahren zur Funkkommunikation zwischen mindestens zwei, jeweils einen Sender (7) und ein Empfangsgerät aufweisenden Funkstationen (6) eines Kommunikationsnetzes (5), wobei den Funkstationen (6) jeweils mindestens ein ultrabreitbandiger Störsender (7), die je nach Art der Schutzwirkung und Reichweiten mit einer Sendeleistung (Spitzenleistungen)von einigen kW bis GW variieren, zur Störung weiterer Funkverbindungen (8) zugeordnet ist. Um zu erreichen, dass auch beim Betrieb des Störsenders (7) eine sichere Funkkommunikation zwischen den Teilnehmern des Kommunikationsnetzes (5) möglich ist, schlägt die Erfindung vor, die Funkkommunikation während der Aktivierung des Störsenders (7) durch Nutzung der Ultra-Breitband-Technologie vorzunehmen, wobei als Sender (7) der jeweiligen Funkstation (6) der dieser Funkstation (6) zugeordnete Störsender (7) verwendet wird. Dabei wird im Falle einer Kommunikation zwischen den Funkstationen (6) die von dem Störsender (7) erzeugten Pulse mittels eines UWB Modulationsverfahrens moduliert. Sofern hingegen keine Kommunikation zwischen den Teilnehmern des Kommunikationsnetzes (5) erfolgen, werden von dem Störsender (7) Pulse konstanter Wiederholraten erzeugt.
Abstract:
A signal is detected and an unwanted jamming signal is removed from the detected signal. Respective first, second and third correlations between a received signal and signals at first, second and third frequencies are determined over a plurality of taps. The second frequency is higher than the first frequency and lower than the third frequency, and is equally spaced from the first and third frequencies. The second frequency is adapted to a frequency of the received signal such that peaks in the first and third correlations after corresponding adaptation of the first and third frequencies have substantially equal magnitudes. A difference is determined between non-peak magnitudes of the first and third correlations; and at least one of the correlations is compensated for the effects of the jamming signal, based on said difference.
Abstract:
Direct generation semiconductor infrared countermeasure lasers are provided that can be independently modulated and combined so as to provide a simultaneously- generated multi-spectral output for the beam. The countermeasure system is smaller and more lightweight than conventional IRCM laser systems, is less expensive, is non-cryogenically cooled and is configurable for multi-spectral generation with asynchronous jam codes in which the spectral distribution can be customized by combining-multiple emitters with a range of center wavelengths.
Abstract:
An electronic countermeasure (ECM) transceiver including a receiver for sequentially receiving a plurality of signals in respective frequency sub-bands. A processor sequentially receives the plurality of signals a nd identifies the received signals as threats. The processor then generates ECM signals based on the threats and sequentially outputs the ECM signals to a transmitter. The transmitter simultaneously transmits the ECM signals in the respective frequency sub-bands to address the threats.
Abstract:
System(s) and method(s) are provided to regulate telecommunication service in a confined area in which telecommunication is restricted. Regulation includes control of wireless resources and access thereto, and monitoring wireless activity and locating sources thereof within the confined area. Regulation can be accomplished through networked femtocell access points and distributed antenna systems. Control of wireless resources is accomplished through selective jamming within the confined area; selective jamming can be updated based on performance metrics of telecommunication service. Configurable lists that authorize mobile device(s) to consume wireless service within the confined area control access to wireless resources. Access can be granted or denied statically or dynamically. Monitoring of wireless activity within the confined area includes tracking and recordation of signaling or traffic activity. The monitoring of signaling activity can enable location of a source of wireless activity, while monitoring of traffic can lead to identification of a user thereof.
Abstract:
Methods and systems for masking audio noise are disclosed. One apparatus includes a silence detector configured to detect a period of substantial silence in an audio signal; a masking noise source operably coupled to the silence detector, the masking noise source configured to generate a noise signal in response to the silence detector detecting the period of substantial silence; and at least one combining device operably coupled to the masking noise source, the at least one combining device configured to contribute to combining the audio signal and the noise signal. A method includes detecting a period of substantial silence in an audio signal; and combining masking noise with the audio signal during the period of substantial silence.
Abstract:
When subjecting a patient to an MRI scan, noise generated by gradient coils in an MRI device is beautified by playing a complementary musical piece that matches the gradient coil noise in one or both of tempo and musical key. Complementary musical pieces (e.g., songs, tunes, melodies, etc.) are pre-generated for specific gradient coil sequences. Upon selection of one or more sequences to be executed during an MR scan, complementary musical pieces for the selected sequence(s) are identified and played back to a patient in the bore of the MRI device during the scan to alleviate patient stress. Tempo and/or musical key of the complementary musical pieces is adjustable (a priori or in real time) to synchronize the complementary musical piece(s) to a specific gradient sequence both rhythmically and harmonically.