×

Geofence with kalman filter

  • US 9,113,298 B2
  • Filed: 03/04/2013
  • Issued: 08/18/2015
  • Est. Priority Date: 06/12/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of geofencing, comprising:

  • a Kalman filter module to filter a plurality of past individual location fixes retrieved for a target device and produce a latest Kalman-filtered location of said target device;

    determining a predictive heading and velocity of said target device based on a plurality of Kalman-filtered locations;

    detecting a geofence boundary crossing by said target device based on said latest Kalman-filtered location of said target device together with said predictive heading and velocity; and

    dynamically determining time intervals between location fixes for said Kalman filter module using said predictive heading and velocity of said target device.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×