An object detection system comprises two or more directional antennas arranged such that lobes of the antennas overlap within a designated area or volume. An electronic device detecting signals from at least two of the directional antennas is determined to be inside the area/volume, and a device detecting signals from none of the antennas or only one antenna is determined not to be inside the area/volume. In this manner, the system determines when a user has placed an electronic device within the area/volume, logs the time the electronic device is within the area/volume, and reports the logged time to the user and/or a central system. The area/volume can comprise a platform, a box, or other confined space.

A tire localization method for a vehicle, can include: matching a first Bluetooth module in each tire of the vehicle with a second Bluetooth module of a Bluetooth host in the vehicle; acquiring first data representing a received signal strength indication of a first radio frequency signal sent by the first Bluetooth module in each tire; acquiring an angle of arrival of the first Bluetooth module in each tire relative to the second Bluetooth module; and locating each tire based on the first data and the angle of arrival.

An unmanned aerial system (UAS) detection device includes a sensor having programmed instructions to cause the sensor to scan energy in an electromagnetic spectrum; process the energy in the electromagnetic spectrum into bursts; determine whether the bursts are valid UAS bursts based on burst criteria; and correlate the bursts into a single signal.

Localization systems and methods for transmitting timestampable localization signals from anchors according to one or more transmission schedules. The transmission schedules may be generated and updated to achieve desired positioning performance. For example, one or more anchors may transmit localization signals at a different rate than other anchors, the anchor transmission order can be changed, and the signals can partially overlap. In addition, different transmission parameters may be used to transmit two localization signals at the same time without interference. A self-localizing apparatus is able to receive the localization signals and determine its position. The self-localizing apparatus may have a configurable receiver that can select to receive one of multiple available localization signals. The self-localizing apparatuses may have a pair of receivers able to receive two localization signals at the same time. A bridge anchor may be provided to enable a self-localizing apparatus to seamlessly transition between two localization systems.

A detection device includes at least one detection module communicatively coupled with a communication device. The detection module includes a controller circuit communicatively coupled with a first antenna. The first antenna receives first electromagnetic signals from a first plurality of antennae located within an interior of a first vehicle. The first antenna receives second electromagnetic signals from a second plurality of antennae located and within an interior of a second vehicle. The controller circuit determines a position of the communication device within the interior of the first vehicle relative to locations of the first plurality of antennae based on the first electromagnetic signals received by the first antenna. The controller circuit determines a position of the communication device within the interior of the second vehicle relative to locations of the second plurality of antennae based on the second electromagnetic signals received by the first antenna.

Determining, broadcasting and using reference pressure data in a network of transmitters. Particular embodiments described herein include machines that select atmospheric data from weather stations within a transmitter network, use the selected atmospheric data to determine a reference atmospheric value, and transmit the reference atmospheric value from a transmitter to a mobile device for use in estimating an altitude of the mobile device. The atmospheric data may include any of reference pressures form the weather stations, measured temperatures from the weather stations, or reference temperatures from the weather stations. The reference atmospheric value may include a reference pressure value of a reference altitude, or a reference temperature value.

A method for notifying on a first mobile terminal an event related to a second mobile terminal is disclosed. The method includes collecting first parameters associated with a short-range radio communication device detected by the first mobile terminal, playing information on the first mobile terminal about an event related to the second mobile terminal when a match is detected between the first parameters and second parameters associated with a short-range radio communication device detected by the second mobile device, the second parameters being collected by the second mobile device. A corresponding mobile terminal capable of notifying an event related to another mobile terminal, as well as to a corresponding tracking device is also disclosed. In case of a pandemic, the method informs a user of mobile terminal that (s)he has been in contact with an infected user of another mobile terminal in the recent past.

A relative angle acquisition unit (110) acquires a relative angle (31) between each base station of a plurality of base stations and a communication device. A provisional position calculation unit (120) calculates a position of the communication device as a provisional position (32), using the relative angle (31) and a position of each base station. A weight calculation unit (130) calculates a distance between each base station and the communication device, using the position of each base station and the provisional position, and calculates a weighting coefficient (33) for correcting the provisional position (32) for each base station, based on the distance between each base station and the communication device. A device position calculation unit (140) calculates the position of the communication device as a device position (34), using the relative angle (31), the position of each base station, and the weighting coefficient (33).

To estimate a positional relationship between devices having transmitted and received signals with higher accuracy.

A control device comprising:

a control unit that performs control for estimating a positional relationship between a communication device having four or more antennas and another communication device on the basis of signals transmitted and received between the communication device and the other communication device, wherein

the control unit applies a weight parameter based on a reliability parameter that is an index indicating a degree of whether or not a signal is appropriate as a processing target for estimating a positional relationship between the communication device and the other communication device calculated on the basis of a signal received from the other communication device by the communication device to a phase difference between adjacent antennas of the four or more antennas of the communication device, and performs control for estimating the positional relationship.

Ultra Wide Band (UWB) based Real Time Location Systems (RTLS) that are being used for location tracking suffer from due to environment specific errors that are introduced due to factors such as difference in reflection and propagation. The disclosure herein generally relates to object localization, and, more particularly, to a method and system of error modelling for object localization using Ultra Wide Band (UWB) sensors. The error modelling allows the system to correct a determined location of an object being tracked, to determine a corrected location.