US Patent No. 10,117,218

PARTIALLY SYNCHRONIZED MULTILATERATION OR TRILATERATION METHOD AND SYSTEM FOR POSITIONAL FINDING USING RF


Patent No. 10,117,218
Issue Date October 30, 2018
Title Partially Synchronized Multilateration Or Trilateration Method And System For Positional Finding Using Rf
Inventorship Felix Markhovsky, Saratoga, CA (US)
Truman Prevatt, Brooksville, FL (US)
Russ Markhovsky, Dallas, TX (US)
Assignee POLTE CORPORATION, Dallas, TX (US)

Claim of US Patent No. 10,117,218

1. A method for determining a location of an emitter antenna in a wireless system comprising the emitter antenna, the method comprising:deploying at least three antenna position calibration units within receiving range of one or more direct line of site (DLOS) reference signals transmitted by the emitter antenna and one or more reflected reference signals received by the at least three antenna position calibration units, each of the at least three antenna position calibration units having a known location;
receiving at each of the at least three antenna position calibration units a DLOS reference signal among the one or more DLOS reference signals transmitted by the emitter antenna and the one or more reflected reference signals;
separating the one or more DLOS reference signals from the one or more reflected reference signals to identify the DLOS reference signal, wherein a signal strength of a DLOS reference signal among the one or more DLOS reference signals is less than a signal strength of a reflected reference signal among the one or more reflected reference signals;
collecting data indicative of the location of the emitter antenna from the reference signal received by each of the at least three antenna position calibration units; and
analyzing the collected data to determine the location of the emitter antenna relative to the known location of each of the at least three antenna position calibration units.