A system and method for identifying a person's location at a school, hotel, office, business, restaurant or other venue and tracking the movements of that person during their visit to the venue. One or more wireless virtual beacons communicate with the person's electronic device. The virtual beacons provide the system with real-time data about the person's whereabouts, allowing for the confirmation and tracking of the person at the location. A first non-limiting example of use, include a company that provides food and beverage allowing the person to place an order for food and beverages on their electronic device and having the order delivered to the person at their current location as determined by the system. Another non-limiting example includes a company performing analytics on the time and movement of it's employees and customers.

A system and method for identifying a person's location at a school, hotel, office, business, restaurant or other venue and tracking the movements of that person during their visit to the venue. One or more wireless virtual beacons communicate with the person's electronic device. The virtual beacons provide the system with real-time data about the person's whereabouts, allowing for the confirmation and tracking of the person at the location. A first non-limiting example of use, include a company that provides food and beverage allowing the person to place an order for food and beverages on their electronic device and having the order delivered to the person at their current location as determined by the system. Another non-limiting example includes a company performing analytics on the time and movement of it's employees and customers.

An electronic beacon placed stationary in a known location. The beacon includes a map, stored therein, pertaining to a covered area. The map includes coordinates of the known location with reference to the map. The electronic beacon is configured to transmit at least a navigational signal. The electronic beacon has a radio transmitter to communicate the map to at least one moving device in the covered area.

An electronic beacon placed stationary in a known location. The beacon includes a map, stored therein, pertaining to a covered area. The map includes coordinates of the known location with reference to the map. The electronic beacon is configured to transmit at least a navigational signal. The electronic beacon has a radio transmitter to communicate the map to at least one moving device in the covered area.

An aircraft assistance method for reducing drag on the aircraft. The method includes flying an autonomous aircraft near the aircraft. An optimal position where vortices created by the autonomous aircraft or the aircraft interact with the other aircraft and/or autonomous aircraft to reduce drag and/or increase lift on the aircraft is determined. The autonomous aircraft is positioned in the optimal position. The method may include a landing assistance system with at least one autonomous aircraft configured to provide the aircraft with information regarding a desired position relative to a runway. The at least one autonomous aircraft may be configured to communicate with the aircraft through a processor and/or a display in the aircraft. The autonomous aircraft may be subject to a drone control system for a plurality of drones configured to position the plurality of drones in a formation.

An aircraft assistance method for reducing drag on the aircraft. The method includes flying an autonomous aircraft near the aircraft. An optimal position where vortices created by the autonomous aircraft or the aircraft interact with the other aircraft and/or autonomous aircraft to reduce drag and/or increase lift on the aircraft is determined. The autonomous aircraft is positioned in the optimal position. The method may include a landing assistance system with at least one autonomous aircraft configured to provide the aircraft with information regarding a desired position relative to a runway. The at least one autonomous aircraft may be configured to communicate with the aircraft through a processor and/or a display in the aircraft. The autonomous aircraft may be subject to a drone control system for a plurality of drones configured to position the plurality of drones in a formation.

A terminal apparatus capable of communicating with a communication apparatus specifies a first distance between the terminal apparatus and a first unit in the communication apparatus and a second distance between the terminal apparatus and a second unit in the communication apparatus, and causes a display unit to display a first screen which relates to the first unit in preference to a second screen which relates to the second unit and display the second screen based on an operation of the first screen displayed in preference to the second screen in a case where the first distance is shorter than the second distance, and display the second screen in preference to the first screen and display the first screen based on an operation of the second screen displayed in preference to the first screen in a case where the second distance is shorter than the first distance.

A location position system can include a plurality of beacons arranged a grid formation divided into a plurality of sub-grids. A mobile computing device can implement a location position application and can receive a radio signal from a particular beacon of the plurality of beacons. The radio signal can comprise a data component uniquely identifying the particular beacon, which can be used to identify a particular sub-grid of the plurality of sub-grids. An audio signal can be received from each of a set of sub-grid beacons associated with the particular sub-grid. Each audio signal can: (i) have a frequency in the frequency range of 16 kHz to 24 kHz and a transmission delay from a reference time, (ii) lack any additional identifying data, and (iii) be separately transmitted from the radio signal transmitted by the particular beacon. The mobile computing device can determine its position based on the received audio signals.

A location position system can include a plurality of beacons arranged a grid formation divided into a plurality of sub-grids. A mobile computing device can implement a location position application and can receive a radio signal from a particular beacon of the plurality of beacons. The radio signal can comprise a data component uniquely identifying the particular beacon, which can be used to identify a particular sub-grid of the plurality of sub-grids. An audio signal can be received from each of a set of sub-grid beacons associated with the particular sub-grid. Each audio signal can: (i) have a frequency in the frequency range of 16 kHz to 24 kHz and a transmission delay from a reference time, (ii) lack any additional identifying data, and (iii) be separately transmitted from the radio signal transmitted by the particular beacon. The mobile computing device can determine its position based on the received audio signals.

A receiver circuit is disclosed. The receiver circuit includes one or more receiver antennas configured to receive a plurality of RF signals transmitted from a transmitter circuit including one or more transmit antennas, an RF chain configured to generate a plurality of digitized samples of the received RF signals, and a controller configured to receive the digitized samples, to calculate a plurality of additional samples, and to calculate a measured angle of arrival or angle of departure (AoA or AoD) of the RF signals based on the digitized samples and the calculated additional samples.