Patent ID: 11877208
Assignee: POLARIS WIRELESS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. A method comprising:
receiving:
(i) a first measurement value MV(1,1) of the power of a first radio signal as received at a first measurement location ML(1), wherein the first radio signal is transmitted by a radio transmitter and is characterized by a first wavelength λ1, and
(ii) a second measurement value MV(2,2) of the power of a second radio signal as received at a second measurement location ML(2), wherein the second radio signal is transmitted by the radio transmitter and is characterized by a second wavelength λ2;

generating:
(i) a first candidate location CL(1) of the radio transmitter, and
(ii) a second candidate location CL(2) of the radio transmitter, wherein the first candidate location is not equal to the second candidate location;

generating:
(i) a first candidate prediction of the total path loss A(1,1,1) for a first hypothetical radio signal from the first candidate location CL(1) to the first measurement location ML(1), wherein the first hypothetical radio signal is characterized by the wavelength λ1, and
(ii) a second candidate prediction of the total path loss A(2,2,2) for a second hypothetical radio signal from the second candidate location CL(2) to the second measurement location ML(2), wherein the second hypothetical radio signal is characterized by the wavelength λ2, and

generating an estimate of a location of a footprint of a building based on which of:
(1) the first candidate location CL(1), and
(2) the second candidate location CL(2) is more consistent with the first measurement value MV(1,1), the second measurement value MV(2,2), the first candidate prediction of the total path loss A(1,1,1), and the second candidate prediction of the total path loss A(2,2,2).