A system for locating RFID tags in an area includes a platform and an RFID reader head associated with the platform. At least one support extends between the platform and an anchor position within an area. Separate support adjustment devices are associated with each support, with each support adjustment device being operable to adjust the length of the associated support between the platform and the anchor position associated with the support. So adjusting the length of the support varies the location of the RFID reader head in the area, thereby allowing an RFID reader associated with the RFID reader head to monitor a larger area than would otherwise be possible if the RFID reader were to remain in a fixed location. The RFID reader head itself may be movable with respect to the platform for finer adjustment of the position of the RFID reader.

A transponder, able to equip a cooperative target facing a Doppler radar, includes at least one receiving antenna able to receive a signal transmitted by said radar and a transmitting antenna able to retransmit a signal. The signal received by the receiving antenna is amplitude-modulated before being retransmitted by the transmitting antenna to produce a variation of the radar cross-section of the target, the variation triggering a frequency shift between the signal transmitted and the signal received by the radar comparable to a Doppler echo. The transponder applies notably to the field of radars, more particularly for collaborative systems also operating at low velocity or nil velocity. It applies for example to assisted take-off, landing and deck-landing of drones, in particular rotary-wing drones, as well as manned helicopters.

A transponder, able to equip a cooperative target facing a Doppler radar, includes at least one receiving antenna able to receive a signal transmitted by said radar and a transmitting antenna able to retransmit a signal. The signal received by the receiving antenna is amplitude-modulated before being retransmitted by the transmitting antenna to produce a variation of the radar cross-section of the target, the variation triggering a frequency shift between the signal transmitted and the signal received by the radar comparable to a Doppler echo. The transponder applies notably to the field of radars, more particularly for collaborative systems also operating at low velocity or nil velocity. It applies for example to assisted take-off, landing and deck-landing of drones, in particular rotary-wing drones, as well as manned helicopters.

A sports detection and reporting system that locates the players and the ball to determined if certain play criteria have been met. The system also displays on the field detected locations relevant to the players and the play in real time.

A system for computing accurate position location coordinates of tags used for tracking assets and people include a first network of access points to help compute a first approximation of the tag position location, a second network of access points underlying the first network for fine position location determination, and a position location server for controlling the second network of access points and computing position location based on round trip delay measurements between tags and the access points.

A system for computing accurate position location coordinates of tags used for tracking assets and people include a first network of access points to help compute a first approximation of the tag position location, a second network of access points underlying the first network for fine position location determination, and a position location server for controlling the second network of access points and computing position location based on round trip delay measurements between tags and the access points.

This invention relates to a method for detecting chipless radio frequency identification devices (RFID), in particular chip detection, also referred to as chipless RFID tags. This invention also relates to the devices and tags which may be used in the claimed method.

Methods, systems, and non-transitory computer readable media are provided for rendering at an electronic terminal a first set of graphical user interfaces to request a first set of data from a user, receiving, at a central server in communication with the electronic terminal, the first set of data from the user, communicating the first set of data via a stateless edge appliance to a third party verification server in a selected one of a plurality of third party computer networks to validate the first set of data, rendering a second set of graphical user interfaces to request a second set of data from the user, communicating the second set of data to the third party verification server to authenticate the second set of data, and authenticating the user in response to receipt of authentication of the second set of data.

Systems (100) and methods (600) for determining a location of an object within space. The methods comprise: generating Inertial Reference Measurement Data (“IRMD”); reading RFID inventory tags by an RFID reader; processing IRMD to determine an RFID reader orientation and position estimates at a time of each RFID inventory tag read; defining cones associated with each RFID inventory tag; mapping the cones to a model; analyzing the model to identify a set of cones which overlap each other and are associated with reads for a respective RFID inventory tag; and deriving a position estimate for the respective inventory tag based on intersecting portions of the cones in the set of cones. Each cone has: a vertex which is the RFID reader position estimate at a respective time; and an angle which is in inverse proportion to a signal strength of a signal received from a respective RFID inventory tag.

Methods, systems, computer-readable media, and apparatuses for autonomous lane detection are presented. One example method includes the steps of receiving a signal from a first device; responsive to a comparison of a measured received frequency of the signal to a source frequency of the signal and to one or more thresholds, determining a distance to the first device; and determining a lane in which the vehicle is operating based on the distance and a lane map. Another example method further includes the steps of determining a location and a heading of the first vehicle; and outputting, to a crowdsourcing server, the location, the heading, and the distance to the first device.