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Class 342/127 - Phase comparison


Subclass of Class 342 - Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
Definition: Subject matter including determining distance by comparing
No. of patents: 192
Last issue date: 05/08/2012


1          
NumberTitleIssue Date
8174434Method and device for determining a distance to a target object
An apparatus and a method for determining a distance (r) to a target object (200) proposes transmitting electromagnetic waves in the form of a transmission signal (120a) by a transmitter (111a), receiving at least one part of said ...
05/08/2012
8094061Multiband 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 a first phase difference between a transmission signal and an output ...
01/10/2012
7903022Distance measuring apparatus, distance measuring method, reflector, and communication system
A transmission controller 7B is configured to transmit an R/W request signal for requesting transmission of a tag response signal to a RFID tag 1 twice. At this time, a frequency controller 7A controls a PLL section 5A to transmit the R/W...
03/08/2011
7864105Distance measuring apparatus and distance measuring method
Distance measuring apparatus has a rough distance measuring circuit (18) using a time delay circuit and a precise distance measuring circuit (31) for measuring the orientation of the vector of a carrier wave to determine the distance, the sum of which ...
01/04/2011
7649491Distance measuring apparatus, distance measuring method, reflector and communication system
A transmission controller 7B is configured to transmit an R/W request signal for requesting transmission of a tag response signal to a RFID tag 1 twice. At this time, a frequency controller 7A controls a PLL section 5A to transmit the R/W...
01/19/2010
7589665Multistatic method and device for radar measuring a close distance
A multistatic detection device for measuring a distance to an object includes a transmitter and a receiver, each having a high-frequency oscillator and a pulse generator. The pulse generators can be supplied with synchronisation signals emitted by signals generators...
09/15/2009
7535407Apparatus using continuous-wave radiation for detecting and locating targets hidden behind a surface
Continuous-wave radiation is used to detect a target hidden behind a surface. In an embodiment, a transmitter directs a beam of continuous-wave microwave radiation from a transmitting location, and reflected radiation from the target is received at first and second ...
05/19/2009
7414571Low frequency asset tag tracking system and method
An apparatus and method for low frequency asset tracking includes a low frequency transmitter tag associated with a cargo container or other high value commodity, a plurality of receivers that detect low frequency signals, and a microprocessor that uses algorithms a...
08/19/2008
7391505Range sensing system
The invention relates to a solid-state range sensing system. As with previous solid-state range sensing systems, an energy source is activated and deactivated in a cyclic pattern with a selected source frequency. A receiver is adapted to sense the reflection of emit...
06/24/2008
7388655High-precision laser rangefinder using burst emission
The present invention provides a rangefinder that has a light source for outputting a measuring beam, an AM modulation unit that modulates the measuring beam with a modulation signal, a light receiving unit that detects a reflected beam that is part of the modulated...
06/17/2008
7362260Method of using continuous-wave radiation for detecting and locating targets hidden behind a surface
Continuous-wave radiation is used to detect a target hidden behind a surface. In an embodiment, a transmitter directs a beam of continuous-wave microwave radiation from a transmitting location, and reflected radiation from the target is received at first and second ...
04/22/2008
7362258Transponder detection system using radio and light wave signals
A target object detection system for detecting a target object using a detector and a tag on the target object; the tag includes a radio wave receiver receiving radio wave from the detector; a light receiver receiving a light signal from the detector; a receipt sign...
04/22/2008
7363177Apparatus and method for performing the time delay estimation of signals propagating through an environment
A system and method for increasing the accuracy of time delay estimates of signals propagating through an environment. The system includes one or more sensors for receiving a plurality of signals, and a time delay estimator for measuring time delays between multiple...
04/22/2008
7355545Through the wall ranging with triangulation using multiple spaced apart radars
A plurality of multi-tone CW radars are used to generate a swath of ranges to a moving object or individual behind a wall or building structure in which the overlap of the range swaths from spaced-apart radars determines the location of the moving object or individu...
04/08/2008
7352320FM-CW radar
An FM-CW radar includes a transmitting section, a mixing section, an A/D conversion section, a storage unit, and a signal processing section. The transmitting section transmits a continuous wave frequency-modulated with a triangular wave. The mixing section mixes th...
04/01/2008
7340345Method and circuit arrangement for determining a quality level of phase signals
The present invention relates to a method and a circuit arrangement for evaluating phase signals for determining an angle or a path of a linearly or rotationally displaced component, whereby a number (N) of measured phase values (α), produced by scanning at ...
03/04/2008
7333046System and method for monitoring targets
A system comprising a moving radar, a processing device, and a phase difference determination device is used to monitor a target. The moving radar has first and second phase centers that transmit and receive signals normal to a direction of movement of the radar. Th...
02/19/2008
7330148Measuring apparatus and measuring method
A measuring apparatus for measuring a distance from an object to be measured has, a transmitting means for alternately modulating amplitudes of a first continuous wave having a first frequency and a second continuous wave having a second frequency for transmitting a...
02/12/2008
7327308Programmable method and test device for generating target for FMCW radar
A test device for a frequency modulated continuous wave (FMCW) radar is provided. The test device has a central control unit for monitoring the FMCW radar. When the FMCW radar transmits a frequency modulated continuous signal to search for a target, the central cont...
02/05/2008
7304609Hybrid wireless ranging system and associated methods
A wireless ranging system includes a first wireless unit and a second wireless unit spaced therefrom. The first wireless unit may include a time-of-arrival (TOA) wireless transmitter, and a near-field electromagnetic (NFE) wireless transmitter having a settable oper...
12/04/2007
7295147Sensor arrangement and method for regulating the distance of motor vehicles
A sensor system on motor vehicles for locating objects in front of the vehicle, wherein at least two sensors, each having a locating depth of at least 50 m, are arranged in such a way on both sides of longitudinal center axis of the vehicle that their locating angul...
11/13/2007
7295150Methods and systems for identifying high-quality phase angle measurements in an interferometric radar system
A method for determining a mechanical angle to a radar target utilizing a multiple antenna radar altimeter is described. The method comprises receiving radar return signals at the multiple antennas, populating an ambiguity resolution matrix with the electrical phase...
11/13/2007
7286798Electronic shelf label
An electronic shelf label with a modulated backscatter communication system which can actively transmit signals. The electronic shelf label includes a modulated backscatter receiver for receiving a first modulated radio frequency (RF) carrier signal, and a transmitt...
10/23/2007
7283096Microstrip patch antenna for high temperature environments
A patch antenna for operation within a high temperature environment. The patent antenna typically includes an antenna radiating element, a housing and a microwave transmission medium, such as a high temperature microwave cable. The antenna radiating element typicall...
10/16/2007
7277052Method for the multistatic detection and locating of a mobile craft through the use of digital broadcasting transmitters
A method to detect and/or locate a mobile craft in a reception system making use of transmitters of opportunity, whose signal comprises elements enabling the synchronization of the receiver, wherein certain discriminating sequences are detected of the payload signal...
10/02/2007
7274167Position-recognizing system for self-moving robot
Disclosed is a position-recognizing system of a self-moving robot. A position-recognizing system of a self-moving robot includes: a floor in which a magnet is inserted; and a self-moving robot provided with a magnetic sensor that can sense the magnet while the robot...
09/25/2007
7239580Noise adaptive sonar signal processor
A system and method of performing sonar range estimations in a noisy sonar environment. The system includes a sensor, a transmitter, a receiver, a plurality of band-pass filters, a cross correlator, and a data analyzer. The transmitter transmits a pulse through a tr...
07/03/2007
7236124Radar system and method for reducing clutter in a high-clutter environment
A radar system transmits an environment-sensing pulse and processing circuitry time-reverses an order of radar return samples and generates a convolution matrix from the radar return samples resulting from a transmission of the environment-sensing pulse. The process...
06/26/2007
7224349Electronic apparatus
The invention efficiently decreases EMI noise occurring with regard to the entirety of an electronic apparatus with a plurality of clocks as references for the operations. The spread spectrum is applied to the clock used by the largest number of ICs, that is, a disp...
05/29/2007
7224712Interrogator and tag of wireless communication system
In a wireless communication system including at least one Interrogator and a plurality of Tags, the Interrogator transmits a main carrier signal, and each Tag transmits a reflected signal to the Interrogator in response to reception of the main carrier signal. The T...
05/29/2007
7221278RFID verifier
An RFID verifier includes a transmit signal strength indicator (TSSI) and a receive signal strength indicator (RSSI). Using the TSSI, the RFID verifier may determine the amount of power an interrogated RFID tag is illuminated with. Similarly, using the RSSI, the RFI...
05/22/2007
7221968Dedicated short-range communication apparatus for motor vehicle
An on-vehicle DSRC apparatus includes a main body (11) a signal processing unit provided in the main body (11), an external storage medium insertion slot (12), an antenna array (22) electrically connected to the signal processing unit to ...
05/22/2007
7215252Proximity sensor
A proximity sensor includes an antenna having a resonant frequency selected to correspond to a resonant frequency associated with a selected dimension of an item of interest. In one example, the antenna is selected to have a resonant frequency corresponding to a res...
05/08/2007
7205931Method for determining the distance between a base station and a mobile object, in addition to a base station and identification system for a method of this type
A method for determining the distance between a base station (SLG) and a mobile object (DT1–DT3). A HF carrier frequency and an offset frequency (df) are predetermined for a QAM modulation. The HF carrier frequency is increased and decreased by the o...
04/17/2007
7202941Apparatus for high accuracy distance and velocity measurement and methods thereof
A system and method for measuring a parameter of a target in accordance with embodiments of the present invention includes transmitting at least one signal towards a target and receiving at least a portion of the transmitted signal back from the target. The measured...
04/10/2007
7184458Reduced subset scan and dual frequency wakeup for bluetooth inquiry operation
An inquiry message is transmitted successively on each of a first plurality of transmit frequencies (44–48) and thereafter successively on each of a second plurality of transmit frequencies (51), in order to ensure that a first wireless communication...
02/27/2007
7167126Radar system and method for determining the height of an object
System and method for determining the height of an object reflecting a real beam radar signal by receiving the reflected signal with a first and second vertically spaced antennas. Receivers provide two signals indicating the phase of the reflected signals received b...
01/23/2007
7151454Systems and methods for location of objects
Systems and methods that may be employed to visually locate and/or track objects equipped with active RFID tags. The disclosed systems and methods may employ an articulated camera/s, such as closed circuit television (“CCTV”) or other suitable type of articulate...
12/19/2006
7151979System and method for tracking inventory
An RFID enabled paper roll includes a tubular core, a paper stock wound around the core, and a radio frequency integrated circuit electrically coupled to an antenna and positioned on the core. A system for reading a radio frequency integrated circuit positioned on a...
12/19/2006
7145349Method for increasing the interference resistance of a time frame reflectometer and a circuit device of implementing said method
The invention relates to methods and a circuit for increasing the interference resistance of a time frame reflectometer, in particular with respect to high frequency irradiation. A transmitted pulse (XS) is generated at a pulse repeater frequency (fprf) and coupled ...
12/05/2006
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