Determination of best displayed ellipse for geo-locating of wireless devices when using round trip time and angle of arrival

A system configured to geo-locate a target station, the system comprising:

• at least one memory device with computer-executable instructions stored thereon;
• and
• at least one processor for executing the computer-executable instructions stored on the at least one memory device, wherein execution of the computer-executable instructions by the at least one processor causes the at least one processor to perform operations comprising:
• transmitting, from a measuring station, a plurality of ranging packets to a target station;
• receiving, at the measuring station, a plurality of response packets transmitted by the target station in response to the plurality of ranging packets;
• determining a plurality of round trip times (RTTs) based on the plurality of ranging packets and the plurality of response packets;
• determining a plurality of angles of arrival (AOAs) based on the plurality of response packets;
• generating a plurality of RTT circular error probability (CEP) ellipses based on the plurality of RTTs;
• generating a plurality of AOA CEP ellipses based on the plurality of AOAs;
• calculating an RTT stability factor for a first RTT CEP ellipse, wherein the RTT stability factor indicates a level of agreement between the first RTT CEP ellipse and a preset number of immediately previous RTT CEP ellipses of the plurality of RTT CEP ellipses;
• calculating an AOA stability factor for a first AOA CEP ellipse, wherein the AOA stability factor indicates a level of agreement between the first AOA CEP ellipse and a preset number of immediately previous AOA CEP ellipses of the plurality of AOA CEP ellipses;
• comparing each of the RTT and AOA stability factors to a respective threshold;
• and
• based on at least one result of the comparisons, selecting either the first RTT CEP ellipse, the first AOA CEP ellipse, both CEP ellipses, or neither CEP ellipse for display to locate the target station.