×

Device for use with a portable inertial navigation system ("PINS") and methods for transitioning between location technologies

  • US 20030179134A1
  • Filed: 03/19/2002
  • Published: 09/25/2003
  • Est. Priority Date: 03/19/2002
  • Status: Abandoned Application
First Claim
Patent Images

1. A method for transitioning between location technologies comprising the steps of:

  • establishing a valid position of a device using a first location technology, wherein the first location technology uses a plurality of radio frequency (“

    RF”

    ) signals;

    tracking a location of the device using the first location technology;

    monitoring at least one metric of the plurality of RF signals;

    identifying that the at least one metric of at least one RF signal in the plurality of RF signals has fallen below a predetermined threshold required for acceptable location tracking accuracy;

    in response to the step of identifying, establishing a next valid position of the device using a second location technology; and

    tracking the location of the device using the second location technology.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×