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8179302 |
Apparatus for sharing an omnidirectional antenna between an IFF transponder and an IFF interrogator
An apparatus for transmitting and receiving radio-frequency signals. including a cylindrical antenna array which has an omnidirectional channel; an IFF interrogator and an IFF transponder connected...
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8174363 |
Multi-transceiver RFID reader system with centralized control and frequency source
Embodiments of the present invention provide RFID systems having a centralized frequency source and controller. The centralized frequency source generates a reference signal, having a frequency...
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8159367 |
Methods for noise validated phase ranging RFID location
A method and apparatus for validating a distance output of a phase ranging RFID location system, based upon the phase readings included in data sets obtained from monitoring reply signals...
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8149154 |
System, method, and software for performing dual hysteresis target association
In certain embodiments, a method includes receiving first track information comprising data for a particular aircraft track. The method further includes receiving a first radar plot comprising...
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8149155 |
Range measuring method, range measuring apparatus, non-contacted IC medium and range measuring system
A method of measuring a range from a reader unit to a non-contacted IC medium, includes: transmitting an inquiry signal at a first frequency from the reader unit to the non-contacted IC medium;...
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8125371 |
System and method for reducing incidences of friendly fire
The invention provides a system and method for reducing the instance of friendly fire by having the weapon aiming system include means for emitting an optical signal encoded with the identity of...
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8120525 |
Systems and methods for obtaining aircraft state data from multiple data links
Systems and methods are delineated that may provide for a system for use in a merging and spacing application for an aircraft. An exemplary system may comprise a TCAS and a processor for executing...
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8116683 |
Adaptive inductive power supply with communication
An adaptive inductive ballast is provided with the capability to communicate with a remote device powered by the ballast. To improve the operation of the ballast, the ballast changes its operating...
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8106767 |
Wireless tag communication system and image forming apparatus
An antenna outputs query signals to a wireless tag, and receives response signals output from the wireless tag. An intensity detection circuit detects the signal intensity of the response signals....
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8102303 |
Method for distance measurement and data transmission in a continuous wave radar system
A method for distance measurement and data transmission in a continuous wave radar system is described. A continuous wave radar system has a transmit and receive module and at least one transponder...
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8102301 |
Self-configuring ADS-B system
Techniques are described that allow information to be acquired by an ADS-B system of an aircraft without the installation of ADS-B dedicated flight crew controls or wired data interfaces in the...
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8098190 |
Apparatus and method for testing emergency locator beacons
An emergency locator beacon testing and communication system is described. The system uses privately-owned Local User Terminals which provide direct feeds to a privately-operated beacon information...
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8098195 |
Pulse transmitters having multiple outputs in phase relationship and methods of operation
A transmitter provides a plurality of output signals. The transmitter includes a processor, a modulator, a first circuit, and a second circuit. The modulator provides a modulated signal responsive...
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8094061 |
Multiband transceiver and positioning system using the transceiver
The present invention comprising: a first local oscillator for generating a first frequency; a second local oscillator for generating a second frequency; phase-difference setting means for setting...
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8089392 |
Radar coordinate registration
Integration of ionospheric models in over the horizon radars (OTHR) is achieved with very little or substantially no change to existing coordinate registration systems or software by specifying a...
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8077073 |
Pulse detecting equipment
A pulse detecting equipment includes a log compression processor (105) for logarithm-converting signal levels of a reception signal received at an antenna and input therefrom, with maintained...
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8072369 |
System and method for interrogating a target using polarized waves
A system and method for communication that could be used in an identification friend or foe system. The method comprises generating a first message by a processor and controlling a beam steerer to...
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8068052 |
Radar apparatus and method for forming reception beam of the same
When an excitation signal is generated from an exciter due to an activation signal generated from a radar control device and is distributed to supply to each antenna sub-module, a combination...
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8063816 |
Method and apparatus to improve the ability to decode ADS-B squitters through multiple processing paths
A system is delineated comprising a TCAS receiver having one or more filters, one or more amplifiers and one or more A/D converters, the one or more A/D converters for digitizing analog data into...
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7994918 |
Method and system for monitoring one or more objects by electronic device
A method and system for monitoring one or more objects by an electronic device are provided. The method includes defining a distance threshold between the electronic device and an object having a...
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7979200 |
Managing an air-ground communications network with air traffic control information
Systems and methods that coordinate assignments of aircraft operating within a controlled airspace to ground radios are provided. In one embodiment, such a system includes an air traffic control...
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7969346 |
Transponder-based beacon transmitter for see and avoid of unmanned aerial vehicles
A transponder-based beacon transmitter system in an unmanned aerial vehicle is provided. The transponder-based beacon transmitter system comprises a global positioning system interface...
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7969347 |
Method for measuring distance and position using spread spectrum signal, and an equipment using the method
By using the delay profile created by delay profile creating section 102 and the first threshold value 330 received from the first threshold value calculation 105, the first threshold value timing...
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7956796 |
Detecting device and railroad vehicle
A system according to the invention detects location information of a vehicle by using a reflection strength change of an electromagnetic wave. The system incorporates a radiowave transmitter which...
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7956750 |
Wireless IC tag
To provide a wireless IC tag which is readable even in a plurality of countries (destination countries) using different radio frequency bands for reading. The wireless IC tag of the present...
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7952512 |
Mobile device enabled radar tags
A method is provided for mobile device enabled radar tags. A signal is transmitted to a radar tag. The radar tag detects the signal. The radar tag provides information. The information is received...
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7948431 |
Radiobased locating system provided with a synthetic aperture
The invention relates to a method for increasing the accuracy of a measurement of a radio-based locating system comprising a mobile station and at least one fixed station, wherein the movement of a...
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7944389 |
Emitter proximity identification
Systems and methods for monitoring and classifying RF emissions in the field include storing an electronic signature map (ESM) of a selected geographic area, where the electronic signature map...
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7928838 |
Wheel electronics and tire control system for measuring a measurand
Wheel Electronics and Tire Control System for Measuring a Measurand is provided. The wheel electronics may include a receiving device for picking up and digitizing an amplitude-modulated request...
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7917088 |
Adaptable detection threshold for RFID tags and chips
RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more...
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7893863 |
Enhanced aircraft transponder reliability
An aircraft system includes a transponder and a processor. The processor is configured to determine if the aircraft is positioned in a predetermined restricted flying zone. If the aircraft is...
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7889114 |
Radar target processing reduction systems and methods using cooperative surveillance sources
Systems and methods for reducing radar target processing. The systems include a processor configured to receive a first input from a cooperative surveillance source and a second input from a radar...
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7889115 |
System and method for tracking and identifying aircraft and ground equipment
In accordance with one or more embodiments of the present disclosure, systems and methods disclosed herein provide for tracking of objects, aircraft, vehicles, and ground equipment in a tracking...
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7881836 |
Tire state monitoring apparatus
There is provided a tire state monitoring apparatus including transponders mounted on a plurality of tires possessed by a vehicle, and ECUs provided on a vehicle body repeatedly transmit address...
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7868815 |
Wireless distance measurement system and wireless distance measurement method
A wireless distance measurement system and a wireless distance measurement method that measure the distance between a base station and a terminal without clock synchronization between a plurality...
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7864097 |
Radar transponder operation with compensation for distortion due to amplitude modulation
In radar transponder operation, a variably delayed gating signal is used to gate a received radar pulse and thereby produce a corresponding gated radar pulse for transmission back to the source of...
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7847722 |
Secondary surveillance radar and method of analyzing replies for secondary surveillance radar
Provided is a secondary surveillance radar with an improved capability of eliminating an unnecessary Mode A/C target report, which includes a transmission unit transmitting interrogations, a...
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7825802 |
Identification system and method of determining motion information
An identification system which may be employed in a transport or monitoring system has at least one stationary and at least one mobile transmission unit which are each provided with an antenna,...
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7812707 |
Communication system, and interrogator and transponder of the system
A communication system including: (a) a plurality of interrogators; and (b) at least one transponder operable, upon reception of an interrogating wave transmitted from each of the interrogators, to...
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7786923 |
Interrogator of communication system
An interrogator that is to be incorporated in a communication system in which each of at least one transponder is operable, upon reception of a main carrier wave transmitted from the interrogator,...
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7777666 |
Celestial body mapping systems and methods
Systems and methods for mapping a surface of a celestial body containing objects and terrain are provided. One system includes a Synthetic Aperture RADAR (SAR) module configured to capture a...
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7777667 |
Radar target identification apparatus
A radar target identification apparatus utilizing a pseudo-random digital code to modulate a target's return signal to include a two-dimensional range and cross range Doppler-coded return with a...
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7772977 |
Intermodulation mitigation technique in an RFID system
When multiple readers for RF transponders have to be placed in close proximity, such as in adjacent lanes of a highway toll barrier, they can be set to operate at different frequencies. When...
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7761236 |
Object recognition apparatus for vehicle and distance measurement apparatus
In an object recognition apparatus for a vehicle which uses intensities of reflected waves from reflecting objects to make a recognition on whether a reflecting object is a vehicle or a...
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7755485 |
System and method for electronic article surveillance
An EAS tag polling system includes a plurality of EAS tags and a base station, wherein each of the tags transmits an acknowledgement to the base station. The base acknowledgments may be sent...
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7755532 |
Methods and apparatus for assignment and maintenance of unique aircraft addresses for TIS-B services
Methods and apparatus for assigning a pseudo address to an aircraft not equipped with an ADS-B transponder and maintaining the assigned pseudo address over a number of regions each supported by...
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7734270 |
Method and apparatus for an enhanced RFID tag interrogator
An apparatus for an enhanced receiver for an RFID Tag Interrogator is described. The enhanced receiver has a zero crossing detector, a phase shifter, a pulse generator and a chopper. The zero...
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7728713 |
Accurate persistent nodes
A timing circuit that can function as an accurate persistent node in an RFID tag includes a power capture circuit for capturing power from a power source, and a counter circuit that provides a...
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7728761 |
Active device for the reception and the emission of electromagnetic waves
An active device includes a receiving antenna (6) that receives an electromagnetic (2) signal coming from a localisation system (3) and at least one emitting antenna (8) that 5 resends said signal...
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7724178 |
Traffic alert collision avoidance system (TCAS) devices and methods
A device for determining the bearing of a vehicle using Inertial Reference Unit (IRU) and Traffic Alert Collision Avoidance System (TCAS) data. The device includes a means to communicate with the...
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