System and method for dynamic localization

A method of determining a location of a portable device with respect to an object, said method comprising:

• receiving first wireless communications in a first antenna;
• providing a first antenna output based on the first wireless communications;
• varying a mode transition criterion based on the first antenna output;
• receiving second wireless communications in a second antenna;
• providing a second antenna output based on the second wireless communications;
• determining if the second antenna output satisfies the mode transition criterion;
• varying the mode transition criterion at a first rate that is less than a second rate for determining if the second antenna output satisfies the mode transition criterion;
• and
• based on a determination that the second antenna output satisfies the mode transition criterion, determining the location of the portable device with respect to the object based on wireless communications.

A system for determining a location of a portable device with respect to an object, said system comprising:

• a plurality of antennas, each of the plurality of antennas configured to receive wireless communications and provide one or more antenna outputs corresponding to wireless communications;
• a control system operable to transition from a first locator mode to a second locator mode based on a first antenna output of the plurality of antenna outputs;
• wherein the control system is configured to vary a mode transition criterion based on a second antenna output of the plurality of antenna outputs;
• wherein the control system is operable to transition from the first locator mode to the second locator mode based on the first antenna output satisfying the mode transition criterion;
• wherein the control system is configured to vary the mode transition criterion at a first rate that is less than a second rate for determining if the first antenna output satisfies the mode transition criterion.

A system for establishing a location with respect to a portable device and an object, the system comprising:

• a plurality of antennas, each of the plurality of antennas configured to receive wireless communications and provide one or more antenna outputs corresponding to wireless communications;
• a controller capable of directing communications between a fixed position device and the portable device, the controller operable to direct a locator to determine the location of the portable device with respect to the object based on one or more first antenna outputs of the plurality of antenna outputs;
• the controller is configured to determine calibration data based on one or more second antenna outputs of the plurality of antenna outputs, the controller is configured to vary the locator based on the calibration data;
• and
• wherein the controller is configured, in response to the one or more second antenna outputs of the plurality of antenna outputs satisfying a mode transition criterion, to direct the locator to determine the location of the portable device based on the one or more first antenna outputs, wherein the mode transition criterion is varied at a first rate that is less than a second rate for determining if the one or more second antenna outputs satisfies the mode transition criterion.