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Vehicle positioning and data integrating method and system thereof

  • US 6,205,400 B1
  • Filed: 08/13/1999
  • Issued: 03/20/2001
  • Est. Priority Date: 11/27/1998
  • Status: Expired due to Term
First Claim
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1. An universal vehicle navigation and control box, comprising:

  • an inertial measurement unit (IMU) for providing inertial measurements including body angular rates and specific forces;

    a global positioning system (GPS) processor for providing GPS measurements including pseudorange, carrier phase, and Doppler shift;

    an altitude measurement device for providing vehicle altitude measurement;

    a central navigation and control processor for processing said GPS measurements, said inertial measurements, and said vehicle altitude measurement to derive a navigation solution, which are connected with said GPS processor, said IMU, said altitude measurement device, and a data bus, comprising an IMU interface and preprocessing board, an altitude interface and processing board, a navigation processing board, a shared memory card for storing data, a bus arbiter for monitoring and managing a common bus and a data bus, and a control board for controlling the data stream mutually connected together via said common bus;

    wherein said navigation processing board is connected with said GPS processor and a data bus for receiving said GPS measurements, said IMU interface and preprocessing board is connected with said IMU for converting said inertial measurements received from said IMU into digital data of body acceleration and rotation which are sent to said navigation processing board and said control board via said common bus, said altitude interface and processing board is connected with said altitude measurement device for converting said altitude measurement received from said altitude measurement device to mean sea level height in digital data type which are passed to said navigation processing board and said control board through said common bus, and said bus interface is connected between said control board and said data bus.

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