Method, device, and system for obtaining a mobile computing device location

A method of determining a mobile computing device location comprising,

• emitting at least one audio signal from at least one audio signal emitter;
• determining a sending time of the at least one audio signal, the sending time comprising a time the at least one audio signal was emitted from the at least one audio signal emitter;
• receiving the at least one audio signal at the mobile computing device;
• determining a receiving time of the at least one audio signal, the receiving time comprising a time the at least one audio signal was received at the mobile computing device;
• calculating a difference between the receiving time and the sending time;
• obtaining at least one air temperature reading;
• using the at least one air temperature reading and the difference between the receiving time and the sending time to determine a distance from the at least one audio signal emitter to the mobile computing device;
• and
• using the distance from the at least one audio signal emitter to obtain a location of the mobile computing device.

A device-location system comprising,

• at least one signal emitting device;
• a mobile computing device adapted to
• receive a signal comprising a sending signal timestamp emitted from the at least one signal emitting device, and
• obtain a receiving timestamp for the signal emitted from the at least one signal emitting device;
• a server in communication with the at least one signal emitting device and the mobile computing device;
• and wherein,
• at least one of the at least one signal emitting device, mobile computing device, and server is adapted to use a the .signal sending timestamp and a the signal receiving timestamp to determine the distance between the at least one signal emitting device and the mobile computing device;
• and wherein, the distance from the at least one signal emitting device and the mobile computing device is further determined from, at least one of a signal emitting device temperature reading and a mobile computing device temperature reading.

A non-transitory, tangible computer-readable storage medium, encoded with processor-readable instructions to perform a method of obtaining a location of a mobile computing device, the method comprising,

• determining a first difference between a sending timestamp for a first audio signal emitted from a first audio signal emitter and a receiving timestamp for the first audio signal received by the mobile computing device;
• determining a second difference between a sending timestamp for a second audio signal is emitted from a second audio signal emitter and a receiving timestamp for the second audio signal-is received by the mobile computing device;
• determining a third difference between a sending timestamp for a third audio signal is emitted from a third audio signal emitter and a receiving timestamp for the third audio signal received by the mobile computing device;
• determining an air temperature;
• and
• using the air temperature, the first difference, the second difference, and the third difference to obtain the location of the mobile computing device.