Synthetic phase processor for controlling accuracy of high integrity GPS positions
Granted: February 26, 2008
Patent Number:
7336225
A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established reference positions and measuring reference phases. The positioning system or the rover station selects a synthetic offset vector and uses the synthetic offset vector for inferring synthetic reference phases to a synthetic…
Multiple-GNSS and FDMA high precision carrier-phase based positioning
Granted: December 25, 2007
Patent Number:
7312747
Three new methods are presented to improve floating solutions and ambiguity resolution for multiple global satellite navigation systems (GNSS), one of which may be an FDMA-based GNSS such as GLONASS: (1) modeling of the hardware-related differential clock error between two (or more) different GNSS, (2) modeling the frequency-dependent biases present in frequency-division multiple access (FDMA) GNSS, and (3) an ambiguity resolution method called Scoreboard Partial Fixing (SPF). The…
Method and system for controlling a valuable movable item
Granted: December 25, 2007
Patent Number:
7313476
One embodiment in accordance with the invention can include a controller that can be coupled with a position determining component, and a motion detecting component. In one embodiment, the motion detecting component detects motion of a valuable movable item and generates a signal to the controller indicating the motion. The controller, in response to the signal, causes the position determining component to determine the geographic location of the valuable movable item. A determination is…
Self surveying laser transmitter
Granted: December 18, 2007
Patent Number:
7310137
A self-surveying laser transmitter comprising a laser transmitter configured to generate at least one rotating laser beam and a radio positioning system integrated with the laser transmitter. The radio positioning system is configured to obtain the precise coordinate measurements of the laser transmitter. by utilizing the differential corrections transmitted from the Base Station by using the wireless communication link.
Method for augmenting radio positioning system using single fan laser
Granted: December 18, 2007
Patent Number:
7310138
A method of augmenting a mobile radio positioning system (Mobile_RADPS) by using a stationary fan laser transmitter. A rover comprises the mobile radio positioning system (Mobile_RADPS) integrated with a mobile laser detector. The stationary fan laser transmitter is integrated with a stationary radio positioning system (Stationary_RADPS). The method comprises the following steps: (A)generating a single sloping fan beam by the stationary fan laser transmitter; (B) detecting the single…
Surveying methods and apparatus
Granted: December 11, 2007
Patent Number:
7307710
The invention relates to a surveying system, comprising at least one total station unit (210, 220), and at least one target (201, 203), said targets having wireless communication means, each unit provided with a unique wireless communication address for wireless communication, the wireless communication to be used to activate a selected total station (210, 220) to identify and measure the location of a chosen target (201, 203) in relation to a relative reference system, each target…
Cellphone GPS positioning system
Granted: November 13, 2007
Patent Number:
7295156
A mobile GPS location system. The location system includes a mobile radio transceiver for transmitting a radio positioning signal and receiving a responsive radio system signal having a radio positioning system (RPS)-based time and position derived from the radio positioning signal; a mobile global positioning system (GPS) receiver; and a code range selector using the RPS-based time and position for selecting a code search range. The mobile GPS receiver uses the code search range for…
GPS reference system providing synthetic reference phases for controlling accuracy of high integrity positions
Granted: November 6, 2007
Patent Number:
7292183
A positioning system or synthetic phase processor or rover station for providing high integrity positions with graduated accuracies. The positioning system includes one or more real time kinematic (RTK) reference stations for receiving GPS signals at established reference positions and measuring reference phases. The positioning system or the rover station selects a synthetic offset vector and uses the synthetic offset vector for inferring synthetic reference phases to a synthetic…
Apparatus for producing a visible line of light on a surface, particularly a wall
Granted: October 30, 2007
Patent Number:
7287336
An apparatus and method for efficiently generating a visible line of light on a surface such as a wall or a floor for the purpose of facilitating the layout process used in construction. Reference marking elements on the instrument correspond to the light beam's position. One or more level vials may be included for indicating vertical and horizontal, as well as a magnet for mounting and a reference bracket for a stud-finder instrument. In one embodiment the instrument is self-leveling on…
Electronic boot up system and method
Granted: October 23, 2007
Patent Number:
7287154
An electronic processing boot up system and method are presented. The electronic processing boot up system and method can utilize ROM emulation to store bootstrap instructions and to facilitate reduction of relatively expensive ROM. For example, a ROM emulation system and method utilizes minimal or no ROM. An electronic processing boot up system can include a bus, a processor, and a ROM emulation system for making bootstrap information available to the processor. The processor can issue…
System for standard positioning service and precise positioning service cooperative operation
Granted: October 16, 2007
Patent Number:
7283090
A system for standard positioning service (SPS) and precise positioning service (PPS) cooperative operation is disclosed. In one embodiment, a PPS receiver is utilized to process a PPS data portion of a positioning signal. In addition, an SPS receiver is utilized to process an SPS data portion of the positioning signal. Furthermore, the PPS receiver and the SPS receiver are communicatively coupled such that the PPS data portion from the PPS receiver is cross-validated with the SPS data…
Radio positioning system for providing position and time for assisting GPS signal acquisition in mobile unit
Granted: October 16, 2007
Patent Number:
7283091
A mobile location system. The GPS location system includes a radio positioning system (RPS) for determining times-of-arrival at several locations for a radio positioning signal transmitted from a mobile unit and then using the times-of-arrival for determining an RPS-based position and time for the mobile unit. The mobile unit uses the RPS-based position and time for focusing a code phase search to a narrow range for rapidly acquiring a GPS signal.
Method and a system for navigating around real site by creating and accessing database of positional reality images of real site
Granted: September 4, 2007
Patent Number:
7266445
A method and a system for navigating a vehicle around a real site. The method comprises the following steps: (A) creating a database of Positional Reality Images (PRI) that substantially accurately represents the real site, and (B) accessing the database of Positional Reality Images (PRI) that substantially accurately represents the real site in order to navigate a vehicle around said real site. The integrated Positional Reality System (PRS) comprising a positioning system integrated…
Shock resistant device
Granted: September 4, 2007
Patent Number:
7266451
A shock resistant device. A printed circuit board comprising electronics and a frequency reference is rigidly mounted to a central support member. The electronics can be mounted to both surfaces of the printed circuit board. The central support member is mounted to an enclosure via wire rope isolators. The central support member is designed to maximize rigidity at minimum mass. The central support member can comprise a thin wall metal mesh or honeycomb. At least a portion of the central…
Method to calibrate hydraulic flow valves in situ
Granted: September 4, 2007
Patent Number:
7266467
A method for performing system characterization in situ for a system comprising a actuator controlled by a proportional controller. The system includes a quasi-linear region characterized by a slope of the system response and by a delay in the quasi-linear region of the system. The system includes at least one dead zone (DZ). The method comprises the following steps: (A) applying an input waveform U(t) to an input of the system comprising the actuator controlled by the proportional…
Electronic rotor pointing with high angular resolution
Granted: August 28, 2007
Patent Number:
7262569
A laser level with a sensorless DC motor controller having a feedback sampling circuit connected in parallel with the coil to sense back EMF. An integrator provides a feedback signal from the sensed back EMF, which the amplified difference from a reference level is used as a pulse width control signal. A pulse width modulation generator uses the control signal to generate variable “on” time pulse widths for each motor drive pulse such that high resolution is provided to the DC motor,…
Method and system for controlling a mobile machine
Granted: August 28, 2007
Patent Number:
7263422
Embodiments of the present invention recite system for controlling an agricultural vehicle. In one embodiment the system comprises a vehicle guidance system for determining a course correction for the agricultural vehicle based upon position data received from a position determining component. The system further comprises a steering controller coupled with the vehicle guidance system and comprising an electric steering output and a hydraulic steering output. The steering controller is…
Method and system for controlling an electronic device
Granted: August 28, 2007
Patent Number:
7263441
The present invention is a method and system for controlling an electronic device. In one embodiment, a controller is coupled with a position determining component, and a motion detecting component. In one embodiment, the motion detecting component detects motion of the electronic device and generates a signal to the controller indicating the motion. The controller, in response to the signal, causes the position determining component to determine the geographic location of the electronic…
Method and apparatus for decoding GPS satellite data at low signal to noise levels
Granted: August 21, 2007
Patent Number:
7260160
A method of decoding a received phase modulated carrier signal comprising the following steps: (A) computing a total probability of a current data bit being “one” or “zero” at a time epoch by computing a plurality of probabilities of phase transitions at a plurality of time epochs, each probability of a phase transition at one time epoch being a probability of a phase transition between a current phase of the received phase modulated signal and a phase corresponding to a…
Shock resistant device
Granted: August 21, 2007
Patent Number:
7260476
A shock resistant device. A printed circuit board comprising electronics and a frequency reference is rigidly mounted to a central support member. The electronics can be mounted to both surfaces of the printed circuit board. The central support member is mounted to an enclosure via wire rope isolators. The central support member is designed to maximize rigidity at minimum mass. The central support member can comprise a thin wall metal mesh or honeycomb. At least a portion of the central…
