SYSTEM AND METHOD FOR DETERMINING SIGNAL SOURCE LOCATION IN WIRELESS LOCAL AREA NETWORK

摘要

Systems and methods for determining signal source location in wireless local area networks are disclosed. An example method includes receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader; receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock; defining a first time relationship between the first clock and a system time based on the first time-of-arrival measurement; and defining a second time relationship between the second clock and the system time based on the second time-of-arrival measurement.

主权项

1. A method, comprising:
receiving, from a first signal reader, a first time-of-arrival measurement for a first radio frequency (RF) signal generated by a first wireless local area network (WLAN) signal source located at a first known location, the first time-of-arrival measurement being relative to a first clock of the first signal reader; receiving, from a second signal reader, a second time-of-arrival measurement for the RF signal, the second time-of-arrival measurement being relative to a second clock of the second signal reader, wherein the first clock is not synchronized with the second clock; defining, via a processor, a first time relationship between the first clock and a system time based on the first time-of-arrival measurement; and defining, via the processor, a second time relationship between the second clock and the system time based on the second time-of-arrival measurement.