A tracking method, an electronic device using the same, and a tracking system using the same are provided. The electronic device includes a wireless communication unit, an azimuth detection unit, a storage unit, and a processing unit. The wireless communication unit detects an external wireless communication signal to generate a current RSSI. The azimuth detection unit detects a current azimuth of the electronic device. The storage unit stores pattern strength indicators and a previous azimuth. The processing unit obtains an RSSI adjustment value according to the current azimuth, the previous azimuth, and the pattern strength indicators, and the processing unit further obtains an RSSI corrected value according to the RSSI adjustment value and the current RSSI.

A tracking device comprising a location module arranged to determine a location of the tracking device; a communication gateway arranged to communicate the location of the tracking device to a receiver station; and a housing arranged to house the location module and the communication gateway, wherein the housing is further arranged to engage with an access mechanism such that when the access mechanism is actuated, the housing is manipulated.

An apparatus comprising a transceiver, a processor and a memory. The transceiver may be configured to send/receive data messages to/from a plurality of vehicles. The processor may be configured to execute instructions. The memory may be configured to store instructions that, when executed, perform the steps of (A) generating signal distance calculations between the apparatus and at least three of the vehicles using the data messages, (B) calculating a plurality of potential positions of the vehicles using the signal distance calculations, (C) performing a scaling operation on the plurality potential positions of the vehicles to determine relative positions of the vehicles on a coordinate system, (D) implementing a procrusting procedure on the coordinate system to generate a corrected coordinate system and (F) determining changes of the relative positions using the corrected coordinate system.

Various embodiments provide systems and method for maintaining an exclusion zone data set in relation to monitoring individuals where the maintenance involves both a user attached monitor device and a user detached monitor.

An apparatus comprising a transceiver module and a processor. The transceiver may be configured to send/receive data messages to/from a plurality of vehicles. The processor may be configured to (i) determine a plurality of selected vehicles from the plurality of vehicles based on a selection criteria and (ii) calculate relative coordinates of the plurality of vehicles based on the data messages from the selected vehicles. The selection criteria may comprise determining (i) a target vehicle and (ii) at least two complementary vehicles. A predicted trajectory of the target vehicle may cross paths with a predicted trajectory of the apparatus. The complementary vehicles may be selected based on (i) an arrangement of the plurality of vehicles and (ii) speeds of the plurality of vehicles.

An illustrative example embodiment of a location determining device includes a processor that is configured to determine an indicated distance between a first detector and a source based on a signal originating at the source and detected by the detector, determine a second distance between the source and a second detector that does not have a direct signal path to the source based on a signal originating at the source and detected by the second detector, and determine a reliability of the indicated distance for determining the location by determining whether the indicated distance corresponds to a direct signal path between the first detector and the source based on a difference between the indicated distance and the second distance.

Various embodiments provide systems and method for monitoring individuals including, but not limited to, communication of information selectively to and from a user attached monitor device and a user detached monitor device.

Embodiments of the present disclosure disclose a positioning method and device, on-board equipment, a vehicle, an electronic device, a positioning system, and a storage medium, relating to the field of autonomous driving technologies, and include: receiving a broadcast message broadcast by a first object, the broadcast message carrying broadcast positioning information of the first object, recognizing a collected image of a second object to acquire recognition information of the second object, the recognition information including image recognition positioning information of the second object, and determining location information of a control device according to the acquired broadcast positioning information and image recognition positioning information, the location information of the control device is determined through the acquired broadcast positioning information and image recognition positioning information.

A method, apparatus, and computer program product are provided for encoding audio events as geo-referenced audio events for use in location establishment. Methods may include: receiving first audio data from a first sensor; identifying, within the first audio data, a first audio event, where the first audio event satisfies at least one predefined criteria; identifying a location corresponding to the first audio event; encoding the first audio event in a database to correspond to the location; receiving second audio data from a second sensor; identifying, within the second audio data, a second audio event; correlating the second audio event with the first audio event; and providing the location in response to the second audio data. The at least one criteria may include a statistically significant change in amplitude in the audio data.

An illustrative example embodiment of a system includes a detector configured to detect a signal from a source and provide first signal information regarding a distance a detected signal traveled between the source and the detector. A processor is configured to determine whether the first signal information corresponds to a direct signal path between the detector and the source or the first signal information corresponds to a reflected signal based on second signal information from at least one other detector that does not have a direct signal path between the other detector and the source. The processor determines a location of the detector based on the first signal information only when the first signal information corresponds to the direct signal path between the detector and the source.