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UTILIZING MAGNETIC FIELD BASED NAVIGATION

  • US 20150260523A1
  • Filed: 05/29/2015
  • Published: 09/17/2015
  • Est. Priority Date: 01/11/2012
  • Status: Active Grant
First Claim
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1. A positioning apparatus comprising:

  • a radio frequency based location tracking sensor;

    a magnetometer to measure Earth'"'"'s magnetic field EMF vector; and

    at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the positioning apparatus at least to;

    detect that the positioning apparatus is within a predetermined control area inside a building by identifying an indoor location of the positioning apparatus on the basis of a low range data transfer received with the radio frequency based location tracking sensor, wherein the low range data transfer applies at least one of the following;

    a radio frequency identification technique, a Bluetooth communication protocol, a IEEE 802.15.4 communication protocol, a low-rate wireless personal area network, an indoor base station based location discovery; and

    cause initialization, with the indoor location identified by the low range data transfer, and activation of an application employing an indoor EMF based positioning system, wherein the application uses an indoor magnetic field map representing at least one of magnitude and direction of EMF affected by the local structures of the building at a given location inside the building and the EMF vector measured with the magnetometer.

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