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8169379 |
Portable multiband antenna
A portable DGPS navigation apparatus is provided. The apparatus includes a receiver assembly and a DGPS antenna assembly. The receiver assembly includes a GNSS antenna, a GNSS receiver, and a DGPS...
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8138970 |
GNSS-based tracking of fixed or slow-moving structures
A multi-antenna GNSS system and method provide earth-referenced GNSS heading and position solutions. The system and method compensate for partial blocking of the antennas by using a known attitude...
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8130142 |
GNSS ultra-short baseline heading determination system and method
A heading determination system comprises an inertial measurement unit (IMU) coupled with at least two GNSS receivers, each receiver paired with and receiving signals from a corresponding GNSS...
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8106811 |
Antijam protected GPS-based measurement of roll rate and roll angle of spinning platforms
A system and method for determining the roll rate and roll angle of a spinning platform in a jamming environment, by suppressing the interference signals from the received GPS signals and using the...
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7986265 |
Systems and methods for determining a rotational position of an object
Apparatus and methods determine the rotational position of a spinning object. A satellite positioning system can be used to determine the spatial position of an object, which in turn can be used to...
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7885765 |
Method and apparatus for estimating behaviors of vehicle using GPS signals
A method and an apparatus for estimating behaviors of a vehicle are provided. At least two GPS antennas are located along a longitudinal axis of a vehicle so that speed vectors at the positions...
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7884759 |
Positioning method
A reception environment is determined to be a multipath environment when the difference (positioning altitude difference) between the maximum value (maximum altitude) and the minimum value (minimum...
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7817065 |
Airport viewing system for an aircraft
The invention relates to a system with a device for determining the current position of the aircraft, a display device displaying, on a viewing screen an airport map, wherewith is associated a...
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7760139 |
GPS based attitude reference system
A method for determining the attitude of a stabilized platform having three or more antennae includes, for each antenna, front-end processing a GPS signal received, the front-end processing...
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7737889 |
Method and apparatus for processing global navigation satellite system signals
Disclosed is a receiver that receives at least three satellite signals and determines the contribution of dispersive elements, nondispersive elements, and phase windup to a phase difference between...
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7693659 |
Satellite navigation system using multiple antennas
A satellite navigation system using multiple antennas for providing the position of multiple fiduciary points on an object even when fewer than four satellites are visible to some or all the...
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7606676 |
Compass sensor unit and portable electronic device
In a compass sensor unit, an azimuth data computing method is carried out by the steps of: inputting a signal from a geomagnetic sensor to measure magnetic field; determining whether to store...
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7580783 |
Correction in position with hitch position sensor
An automatic guidance system for an agricultural vehicle includes a tractor, a towed implement, an absolute tractor position sensor, a relative implement position sensor, and an electronic control...
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7489249 |
Apparatus and method for determining the attitude of a remotely monitored device
An apparatus and method for the determination of the attitude of a remotely monitored device attached or non-attached to the body of a remotely monitored person is disclosed. The device attitude is...
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7421340 |
Method, apparatus and computer program for azimuth determination e.g. for autonomous navigation applications
For an observer equipped with a first azimuth data source responsive to a magnetic field to deliver first azimuth data, such as a compass, and with a second azimuth data source delivering second...
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7400956 |
Satellite position and heading sensor for vehicle steering control
A sensor system for vehicle steering control comprising: a plurality of global navigation satellite sensor systems (GNSS) including receivers and antennas at a fixed spacing to determine a vehicle...
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7397422 |
Method and system for attitude determination of a platform using global navigation satellite system and a steered antenna
A system and method for determining the attitude of a platform is provided. The method includes: (a) Searching and scanning for one or more GPS satellite(s) to determine initial platform position;...
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7388538 |
System and method for obtaining attitude from known sources of energy and angle measurements
A system and method of determining an orientation of a spinning object at a known GPS location comprises radially deploying antennae around a plurality of axes of measurement of the spinning...
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7388539 |
Carrier track loop for GNSS derived attitude
A method and system for reducing Global Navigation Satellite System (GNSS) carrier tracking loop ambiguities comprising: receiving a plurality of GNSS satellite signals with a first antenna in...
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7358893 |
Pseudo random code modulated signal combiner
A circuit and associated method for determining the heading of a vehicle or device with a satellite ranging system receiver is provided. The circuit requires only a single front end RF stage. A...
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7292185 |
Attitude determination exploiting geometry constraints
A method and system for determining at least one attitude angle of a rigid body. The method comprising: receiving a plurality of Global Navigation Satellite System (GNSS) satellite signals with a...
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7292186 |
Method and system for synchronizing multiple tracking devices for a geo-location system
A method and system of synchronizing multiple tracking devices in a geo-location receiver system comprising: receiving a first plurality of geo-location signals with a first tracking device; and...
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7268727 |
Method and apparatus for improved position, velocity, orientation or angular rate sensor
A global navigation satellite system (GNSS) receiver system includes a processing unit; and one or more antenna units for receiving GNSS signals, each of the antenna units having a phase center;...
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7105790 |
Process to control the trajectory of a spinning projectile
A process to control the trajectory of a spinning projectile. The projectile's accelerations are measured by means of an inertial unit in three axes within a reference linked to the projectile so...
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6975959 |
Orientation and navigation for a mobile device using inertial sensors
A mobile device for enhanced navigation and orientation including a visualization interface, a first sensor for providing signals indicative of a movement of the mobile device, a second sensor for...
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6956525 |
Method for correcting azimuth angle data of a navigational device and the navigational device used therein
A method for correcting azimuth angle data of a navigational device, which is installed in a vehicle, includes the steps of enabling the navigational device to periodically receive a position...
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6906664 |
Method and system using a GPS-based phased-array scheme for three-axis attitude determination
A method and system for determining three-axis attitude from line-of-sight (LOS) solutions for two or more GPS satellites uses intersections of null cone patterns and LOS vectors to the GPS...
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6883747 |
Projectile guidance with accelerometers and a GPS receiver
A projectile guidance system without gyros in which the projectile has an orthogonal body coordinate system. The projectile has a triax of accelerometers providing x, y and z acceleration data...
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6725173 |
Digital signal processing method and system thereof for precision orientation measurements
The present invention provides a digital signal processing method and system thereof for producing precision platform orientation measurements and local Earth's magnetic measurements by measuring...
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6703973 |
Guiding vehicle in adjacent swaths across terrain via satellite navigation and tilt measurement
A method of guiding a vehicle in adjacent swaths across terrain that may slope comprising the steps of: (1) determining the tilt of the vehicle with respect to Earth due to a slope of the terrain;...
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6671587 |
Vehicle dynamics measuring apparatus and method using multiple GPS antennas
An apparatus and method for measuring dynamic movement of a vehicle (10) by employing multiple GPS satellites and determining velocity based change in the carrier frequency of multiple satellite...
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6650287 |
Method for determining the position of reference axes in an inertial navigation system of an object in respect with the basic coordinates and embodiments thereof
A method for determining a position of reference axes in an inertial navigation system of an object with respect to a basic coordinate system is provided. The method includes measuring coordinates...
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6650283 |
Vehicular tracking device
The present invention is directed to a system for tracking a fleeing vehicle comprising a frangible tracking projectile and a launcher to propel and attach the tracking projectile to the fleeing...
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6628231 |
Location of radio frequency emitting targets
A method is described which enables the location of a radio frequency emitting target in absolute or relative GPS coordinates from a single airborne platform within a few seconds. The method uses a...
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6594582 |
GPS compound eye attitude and navigation sensor and method
The present invention is a GPS system for navigation and attitude determination, comprising a sensor array including a convex hemispherical mounting structure having a plurality of mounting...
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6587689 |
Multi-sensor assisted cellular handoff technique
A system and method for assisting in handoff in a cellular communication system. The system includes a base station having a data base of patterns of known handoff to predetermined different base...
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6520448 |
Spinning-vehicle navigation using apparent modulation of navigational signals
Attitude of a spinning vehicle is determined by observing at least one of the apparent amplitude modulation and the apparent phase modulation of a navigation signal received from a navigation...
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6512976 |
Method and system for terrain aided navigation
A method and system for terrain aided navigation which provide more precise and more accurate position, velocity, altitude, and attitude for an air vehicle. The present method is a continuous,...
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6501422 |
Precise parallel swathing guidance via satellite navigation and tilt measurement
The satellite navigational system integrated with the tilt measurement system capable of precise measurement of the actual coordinates of the mobile unit that moves along a track with variable tilt...
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6467721 |
Process for the target-related correction of a ballistic trajectory
In order to perceptibly reduce the inevitable trajectory scatter or spread of ballistically fired projectiles in the target area without the technological expenditure involved in automatic...
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6463366 |
Attitude determination and alignment using electro-optical sensors and global navigation satellites
An attitude determination and alignment method and system use electro-optical sensors and global navigation satellites to determine attitude knowledge for a spacecraft, satellite, or a...
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6463374 |
Form line following guidance system
A first form line is defined using two or more terrestrial locations. The first form line may be predefined or may be defined by user during a spraying operation. A second form line is then...
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6459406 |
GPS patch antenna attitude reference system
A pair of patch antennas are used to form a null slit antenna pattern for receiving GPS signals from at least three GPS satellites functioning as pseudo stars for spin rate and spin axis attitude...
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6446003 |
Method for determining drift with a digital compass
An integrated position and direction system and method thereof for determining drift. The integrated position and direction system comprises a satellite positioning system and a digital compass....
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6441779 |
System and method of carrier-phase attitude determination
A system and a method for determining a satellite antenna attitude are disclosed. Radio signals from a satellite, such as a GPS satellite, are received by a plurality of coupled antenna elements...
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6441776 |
Method and apparatus for spacecraft payload pointing registration
A method, apparatus, and article of manufacture for directing a payload coupled to a spacecraft substantially at a target location is disclosed. The method comprises the steps of determining...
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6401036 |
Heading and position error-correction method and apparatus for vehicle navigation systems
The present invention provides methods and devices that enable correction of gyroscope bias and gyroscope bias drift in low-cost, vehicular navigation and positioning systems without using...
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6401037 |
Integrated position and direction system for determining position of offset feature
An integrated position and direction system is disclosed that includes a digital compass, wherein the digital compass includes at least three sensors, and a satellite positioning system (SATPOS)...
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6278404 |
Global positioning system satellite selection method
The satellite selection method as utilized by the spaceborne Global Positioning System receiver provides navigational solutions and is designed for use in low Earth orbit. The satellite selection...
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6266585 |
Gyrocompassing by intermittent GPS interferometry
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