With Position, Velocity, Or Attitude Determination (ipc) Patents (Class 342/357.2)
  • Patent number: 7889124
    Abstract: A wireless utility asset mapping device comprises a pole, a positioning receiver connected to the pole, a wireless modem connected to the positioning receiver and the pole, and at least one waterproof housing enclosing the positioning receiver and the wireless modem. The wireless modem is a long range wireless modem and has a range of at least 500 feet in low density and high density areas. The wireless utility asset mapping device may also comprise an external interface module, and external equipment in communication with the external interface module. A utility asset is located and the wireless utility asset mapping device is placed over the location of the utility asset. The coordinate of the wireless utility asset mapping device is determined and wirelessly transmitted over long distance in low density and high density areas.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: February 15, 2011
    Inventors: Mohammad Mojahedul Islam, Edward T. Sitler, Saul O. Iglesias, Joseph S. Purtell, Sanjiv H. Devani
  • Patent number: 7881407
    Abstract: Systems and methods for mitigating multipath signals in a receiver are provided. In this regard, a representative system, among others, includes a receiver comprising an antenna being configured to receive signals from a plurality of satellites, and a computing device being configured to: generate pseudorange measurements based on the received satellites signals, process the generated pseudorange measurements to reduce its pseudorange residuals based on statistical modeling in order to mitigate multipath errors, and compute navigation solutions based on the processed pseudorange measurements. A representative method, among others, for mitigating multipath signals in a receiver, comprises: receiving the pseudorange measurements; processing the received pseudorange measurements to reduce its pseudorange residuals based on statistical modeling in order to mitigate multipath errors; and computing navigation solutions based on the processed pseudorange measurements.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: February 1, 2011
    Assignee: SIRF Technology, Inc.
    Inventors: Mangesh Chansarkar, Gang Xie, Sanjai Kohli
  • Patent number: 7860628
    Abstract: An apparatus, method and tangible medium using GPS for guiding a farm implement along a turn path between swaths. The apparatus includes a GPS receiver and a turn computer. The turn computer calculates or stores a turn path between swaths, calibrates GPS positions to a swath end position and uses the calibrated GPS positions to guide the implement along the turn path to the start of the next swath. A steering wheel autopilot may be included to steer a powered vehicle according to a cross track error between the calibrated GPS positions and the turn path.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: December 28, 2010
    Assignee: Trimble Navigation Limited
    Inventor: Arthur F. Lange
  • Publication number: 20100306155
    Abstract: A data analysis system includes a database including a plurality of official records, a user interface for receiving a signatory information, a processor in communication with the database and the user interface, wherein the processor compares the signatory information and a number of the official records based upon an instruction set and assigns a confidence factor to the signatory information in response to the comparison of the signatory information and the number of the official records.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 2, 2010
    Inventor: Mark D. Giannetto
  • Publication number: 20100283674
    Abstract: A method and system of improving Global Navigation Satellite System (GNSS) results by compensating for antenna tilt in determining the location of the GNSS receiver is disclosed. In general, the angle of tilt of the antenna is determined. The actual elevation of a satellite is determined. The effective elevation of the satellite relative to the antenna is then calculated.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 11, 2010
    Inventor: Geoffrey R. KIRK
  • Publication number: 20100201570
    Abstract: A method of measuring the power of a signal from a transmitter (10) causing interference with a receiver (16) involves geolocating the transmitter (10) via satellites (24) and (28) or aircraft A1and A2. The receiver (16) is part of a satellite-implemented Global Navigation Satellite System. Geolocation involves finding a correlation peak between replicas of the transmitter's signal to determine their differential time and frequency offsets, from which a transmitter's location is calculated. The transmitter's signal power P1 is a solution to a quadratic equation with coefficients involving the transmitter's distances D1 and D2 from the satellites (24) and (28), its transmit wavelength ?, total noise temperature TN of each satellite's receiver system and antenna, correlation peak signal to noise ratio SNRc satellites' receive antenna gain Gs sample bandwidth B at outputs of the satellite receivers' ADCs and correlation integration time T.
    Type: Application
    Filed: September 11, 2008
    Publication date: August 12, 2010
    Inventors: Setnam Lal Shemar, Christopher Griffin