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US 2024/0402283 A1Published application
Position tracking system and method using radio signals and inertial sensing
AssigneePosition Imaging, Inc.
InventorsEdward L. 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 tracked object. The tracked object has at least one mobile antenna and at least one inertial sensor. The system uses a plurality of base antennas which communicate with the mobile antenna using radio signals. The tracked object also incorporates the inertial sensor to improve position stability by allowing the system to compare position data from radio signals to data provided by the inertial sensor.
Claims11
A tracking system comprising:
- a mobile device, comprising:
- at least one antenna configured to receive radiofrequency (RF) signals transmitted by at least one RF transmission source for determining a position of the mobile device;
- and
- at least one processor in communication with the at least one antenna, the at least one processor of the mobile device configured to:
- receive inertial measurement data;
- calculate, from position information of the RF signals, a first position of the mobile device;
- compare the position information of the RF signals and inertial measurement data to modify a position stability of the RF signals;
- and
- calculate, from the inertial measurement data and the calculated first position, a second position of the mobile device for tracking the mobile device, wherein the at least one processor is further configured to reduce power to the at least one receiver antenna when the sensor does not detect motion for a period.
6 more elements
An object being tracked, comprising:
- at least one antenna configured to receive radiofrequency (RF) signals transmitted by at least one RF transmission source for determining a position and/or orientation of the mobile device;
- and
- at least one processor in communication with the at least one antenna, the at least one processor of the mobile device configured to:
- receive inertial measurement data;
- calculate, from position information of the RF signals, a first position of the mobile device;
- compare the position information of the RF signals and inertial measurement data to modify a position stability of the RF signals;
- and
- calculate, from the inertial measurement data and the calculated first position, a second position of the mobile device for tracking the mobile device so that the object determines its own position and orientation.
5 more elements
Dependencies are inferred from the claim text.