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Class 342/394 - Iso-phase type


Subclass of Class 342 - Communications: directive radio wave systems and devices (e.g., radar, radio navigation)
Definition: Subject matter wherein a distinctive signal or pulse in
No. of patents: 45
Last issue date: 04/17/2012


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NumberTitleIssue Date
8159395Communication device, communication system, position detection method and program
There is provided a communication device including: a receiving unit that receives radio signals transmitted from another communication device using a plurality of transmitting antennas by a plurality of receiving antennas; an estimation unit that estimates a range ...
04/17/2012
7330729Mobile terminal device and positional information system
A geomagnetic sensor for detecting geomagnetism is provided in a mobile terminal device. The output value of the geomagnetic sensor is compared with a first set value that has been set in advance, and the mobile terminal device is determined to be stationary when th...
02/12/2008
7321332Device for measuring angle positions
In a device for measuring angular positions by using radar pulses and mutually overlapping beam characteristics of at least two antenna elements, a switchable phase shifter is provided in the signal path of at least one antenna element which is switchable in the tim...
01/22/2008
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
7295155Satellite positioning apparatus and method
Available-satellite data indicating satellites available for satellite positioning is obtained from a GPS receiver, and satellites continuously available for satellite positioning in the current instance and the previous n times are extracted as candidate satellites...
11/13/2007
7257412Methods and systems for location estimation
Methods and systems for location estimation. Signals are received from a plurality of satellites and a plurality of base stations by a mobile station. The location of the mobile station is estimated according to TOA (Time-Of-Arrival) and TDOA (Time Difference-Of-Arr...
08/14/2007
7212565Method for producing a sequence synchronized with an external signal and synchronization circuit and receiver
A method for generating an internal sequence of analog values having a specific period includes producing an intermediate value by a logical combination of an actual value of the external sequence with an actual value of a second generating sequence, producing an in...
05/01/2007
7095363Pulse radar apparatus
A pulse radar apparatus uses different frequencies, for example, frequencies one of which is a multiple or a submultiple of the other for a signal which becomes a reference of a control pulse for controlling a gate operation for a reception signal and a signal which...
08/22/2006
7054739Radio navigation system
Navigation apparatus that may include a radio receiver, at least one directional antenna communicatively coupled to the radio receiver, and a navigation computer including a memory and a processor. The navigation computer may be communicatively coupled to the radio ...
05/30/2006
7016647Method and system for data communication between a read/write device and a mobile memory device based on transfer-time measurement
A method and system for transferring data between at least one read/write device (RWD) and at least one mobile data memory (MDM). The mobile data memory (MDM) is preferably attached to an object for recording object-related status and/or process data, e.g. in a disp...
03/21/2006
7006838System and method for locating sources of unknown wireless radio signals
A system and method for determining the location of a source (target device) of a wireless radio signal of an unknown or arbitrary type for which a signal correlator is not known or available. The target device's signal is received at a plurality of known locations ...
02/28/2006
6976392Atomic clock for downhole applications
A system and method for acquiring seismic data are disclosed. The system comprises a controller for causing the generation of a seismic signal, where the controller has a first clock used for time-stamping a record of the generated seismic signal. A seismic receiver...
12/20/2005
6944540Time determination in satellite positioning system receivers and methods therefor
Method in a Global Positioning System (GPS) receivers, including determining pseudorange (PNR) measurements for at least four satellites (210), determining a coarse time (220) corresponding to the pseudorange measurement, determining an offset time (
09/13/2005
6938347Shears
The invention relates to shears comprising a stationary blade (1) and a movable blade (2) which moves during the shearing movement of the shears. An operating mechanism (5) is arranged to affect a point of the pin (6) located at a distanc...
09/06/2005
6931084Differential coding and carrier recovery for multicarrier systems
A method of performing an echo phase offset correction in a multi-carrier demodulation system involves the step of differential phase decoding phase shifts based on a phase difference between simultaneous carriers having different frequencies. An echo phase offset i...
08/16/2005
6906625System and method for information assimilation and functionality control based on positioning information obtained by impulse radio techniques
A system and method for information assimilation and functionality control based on positioning information obtained by impulse radio techniques, which utilizes the position information and communication abilities inherent in impulse radio technology to correlate po...
06/14/2005
6697630Automatic location identification system comparing stored field strength data and an actual cellular call's field strength
An Automatic Location Identification (ALI) system for cellular telephone networks, along with a pseudo Automatic Number Identification (ANI) typically representing a particular face of a cell tower receiving an emergency call, compares the electromagnetic...
02/24/2004
6097338Instrument landing system glide path transmitter device
A glide path transmitter for an instrument landing system. The transmitter includes several antenna radiators by way of which high frequency signals containing various low frequency modulated carrier and side band components are radiated. The components o...
08/01/2000
5999129Multiplatform ambiguous phase circle and TDOA protection emitter location
A method and system for determining the geolocation--i.e., the latitude, longitude, and altitude--of a stationary RF signal emitter from two or more moving observer aircraft. The observers receive signals from the emitter and the system measures the phase...
12/07/1999
5280295Navigation and positioning system and method using uncoordinated beacon signals
A positioning system uses a multiplicity of commercial broadcast stereo FM radio signal transmitters, at known fixed locations, each of which transmits a beacon signal having a phase that is un-synchronized with the phases of the beacon signals of the oth...
01/18/1994
5173710Navigation and positioning system and method using uncoordinated beacon signals
A positioning system uses a multiplicity of commercial broadcast stereo FM radio signal transmitters, at known fixed locations, each of which transmits a beacon signal having a phase that is un-synchronized with the phases of the beacon signals of the oth...
12/22/1992
4855962Method and system for locating and correcting the orientation of an autonomous mobile object and a non-autonomous mobile object
In a method of locating and orienting a first direction linked to the position and to the orientation of an autonomous first mobile object (M), such as a ship towing a marine geophysical prospecting cable, and a second direction formed by a non-autonomous...
08/08/1989
4797679Radio direction-finding using time of arrival measurements
A method and a system for radio direction-finding by measuring the Time of Arrival (ToA) of the leading edge of signals from a distant source at two relatively closely spaced receiving elements. In order to give a good degree of immunity to multipath, the...
01/10/1989
4739333Single channel distance measuring receiver system and method
A distance-measuring receiver and system uses a transmitter which transmits only a single continuous-wave signal. The receiver produces a first component and a second component from the received signal. The first component is frequency doubled and used to...
04/19/1988
4675684Distance measuring receiver system and method
A distance measuring receiver system and method for determining the distance of a receiving station from a transmitting station, which provides the distance information by the reception and processing of a pair of signals (preferably continuous wave carri...
06/23/1987
4672383Craft guidance system
A craft guidance system 200 has signal transmission stations AB, CD, AC operable to provide three intersecting hyperbolic lattices 21, 20, 120. One transmission station pair AB provides a moving lattice 21 which travels at the same speed and in the direct...
06/09/1987
4646096Enhanced global positioning system Delta-Range processing
A circuit is shown which utilizes signals transmitted from global positioning system satellites to create change in phase signals. The change in phase signals are measured over a predetermined time interval, one second, and stored. The stored signals are ...
02/24/1987
4626860Passive synthetic aperture system for imaging a source of electromagnetic radiation
A vehicle-mounted passive synthetic aperture system for locating sources of electromagnetic radiation having a given wavelength λ. The system includes first and second receiving antennas, a phase sensitive receiver and a signal processor. The first and s...
12/02/1986
4562437Digital loop filter
A digital loop filter is used in a phase-tracking circuit which is adaptable to a phase-comparison radio navigation system such as the DECCA (registered trademark) system. The digital loop filter includes a feedback circuit which receives a digital input ...
12/31/1985
4547777Method of radio-position-finding through determination of phases of electromagnetic waves and receiving device for practicing the method
A method of radio-position-finding by means of mapped contour lines of iso-phase shift between two radio-frequency waves separated by a low frequency and transmitted by a group of foci stations also emitting a reference wave associated with said two radio...
10/15/1985
4532637Differential receiver
A phase differential determining apparatus generates low frequency output signals from a multiple channel receiver and extracts relative phase angles of the received RF signals therefrom. The same local oscillator signals, which are phase locked to one of...
07/30/1985
4496951Hyperbolic navigation receiver
A hyperbolic navigation receiver locates ships, and the like, by phase-locking the output signal of the voltage-controlled oscillator or voltage-controlled phase shifter of respectively provided tracking loop filters corresponding to the incoming signals ...
01/29/1985
4490722Radio navigation system
An improved line-of-position radio navigation system is disclosed wherein a continuous wave signal produced by a local oscillator is transmitted from a fixed station. At a remote mobile station, the signal is received and is heterodyned with the output of...
12/25/1984
4472720Area navigational system using geosynchronous satellites
An area navigational system using geosynchronous satellites is disclosed. The navigational system comprises a master satellite and seven slave satellites uniformly disposed in geosynchronous orbit above the equator of the earth. The master satellite compr...
09/18/1984
4442432Electronic navigation method and system
A method and system for navigation is disclosed comprising a plurality of transmitters, pairs of which are excited from a common frequency source, and a receiver responsive to and deployed within the wave fields created by the transmitters. The receiver i...
04/10/1984
4387375Transmitter for a navigation system
In navigation transmitters it is important that the phase difference between the carrier waves of a carrier signal and the carrier waves of sideband signals be held at a constant value. To accomplish this, the carrier waves are maintained constant relativ...
06/07/1983
4307401Two-channel receiver-indicator for phase radio systems
Two of three receivers of a receiver-indicator are tuned to the frequencies of a first guided station and first guiding station, second guided station and second guiding station, respectively, and a third receiver is tuned to the frequency of a repeater s...
12/22/1981
4114155Position determining apparatus and method
The position of a receiver responsive to C/A signals derived from multiple, orbiting space crafts is determined to an accuracy of greater than 300 meters. Each of the C/A signals has the same carrier frequency and a different, predetermined Gold code sequ...
09/12/1978
4106022Radio position-determining system
A relay system for relaying hyperbolic navigation signal information received at a mobile. The mobile has a simple relay transmitter and receives signals which are radiated from different navigation transmitters in turn on a single frequency frf.
08/08/1978
4063244Receiver/timing apparatus for a single frequency, time-shared positioning system
An improved receiver/timing apparatus is disclosed for use in a single frequency, time-shared, continuous wave, phase-comparison positioning system wherein a trigger signal is transmitted from a master station and wherein pattern frequency signals are tra...
12/13/1977
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