Position tracking system and method using radio signals and inertial sensing
AssigneePosition Imaging, Inc.
InventorsEdward Hill, Mark Schneider
Life of this patent
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Abstract
An RF position tracking system for wirelessly tracking the three dimensional position of a device that transmits a radio signal. The device has an antenna and at least one inertial sensor. The system uses a plurality of receiver antennas to receive the device's radio signal at each antenna. The device also incorporates an inertial sensor to improve position stability by allowing the system to compare position data from radio signals to data provided by the inertial sensor.
Claims13
A method of an object having an inertial sensor and capable of transmitting a radio frequency (RF) signal, the method comprising:
- each of at least three antennae receiving an RF signal emitted from the object;
- receiving an inertial signal from the inertial sensor;
- and
- processing the RF signal and the inertial signal to determine a position of the object, by applying a fusing algorithm to the received RF signal and the received inertial signal.
A receiver for determining a position of an object being tracked, comprising:
- at least three antennae configured to receive an RF signal from the object;
- an inertial input configured to receive inertial position information from the object;
- and
- a processor in communication with the at least three antennae and the inertial input, the processor receiving the RF signal and the inertial position information and determining the position of the object being tracked by applying a fusing algorithm to the received RF signal and the received inertial position information.
Dependencies are inferred from the claim text.