ULTRASONIC IN-BUILDING POSITIONING SYSTEM BASED ON PHASE DIFFERENCE ARRAY WITH RANGING
First Claim
Patent Images
1. A method for determining position of a mobile electronic device, comprising:
- emitting an acoustic pulse from the position of the mobile electronic device;
detecting the acoustic pulse at a known position at three spaced apart locations along each of at least two lines extending in different directions;
determining the time differences of arrival of acoustic pulses at each of the detecting locations;
determining a phase difference of the acoustic pulse between each of the detecting locations;
determining a relative position of the device with respect to the known position from the time differences of arrival and phase differences; and
at least one of storing or displaying the relative position.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for determining position of a mobile electronic device includes emitting an acoustic pulse from the position of the mobile electronic device. The acoustic pulse is detected at a known position at three spaced apart locations along each of at least two lines extending in different directions. The range and phase difference of the acoustic pulse between each of the detecting locations is determined. A relative position of the device with respect to the known position is obtained from the range and phase differences.
-
Citations
11 Claims
-
1. A method for determining position of a mobile electronic device, comprising:
-
emitting an acoustic pulse from the position of the mobile electronic device; detecting the acoustic pulse at a known position at three spaced apart locations along each of at least two lines extending in different directions; determining the time differences of arrival of acoustic pulses at each of the detecting locations; determining a phase difference of the acoustic pulse between each of the detecting locations; determining a relative position of the device with respect to the known position from the time differences of arrival and phase differences; and at least one of storing or displaying the relative position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification