An object position-measuring device, a method thereof, and a system thereof are proposed. The object position-measuring device, method thereof, and system thereof are for measuring a position of an object by using a plurality of wireless signals indoors. In the object position-measuring device, method thereof, and system thereof, respective distances from the position-measuring device and first and second wireless communication devices to the object are calculated by using respective travel times of the wireless signals respectively transmitted from the position-measuring device and the first and second wireless communication devices and the wireless signals received after being reflected from the object, whereby the position of the object is measured by using the calculated distances.

A method for a radar sensor, in particular a radar sensor for motor vehicles. The method includes the steps: determining, for particular evaluation channels that correspond to different central antenna positions of relevant transmitting antennas and receiving antennas in one direction, and for particular individual radar targets, a respective individual radial velocity of the particular radar target associated with the particular evaluation channel, based on signals obtained in respective evaluation channels; estimating a particular velocity of the particular radar target based on the determined individual radial velocities of the radar target, the velocity including information concerning a velocity in the forward direction in relation to the radar sensor, and a tangential velocity; and associating radar targets as belonging to an extended radar object as a function of the estimated velocities of the radar targets. A radar sensor is also described.

An angle-resolving radar sensor for motor vehicles, having an antenna system having a plurality of antennas set up for receiving, configured in various positions in a direction in which the radar sensor is angle-resolving, and having a control and evaluation device designed for an operating mode in which at least one antenna of the radar sensor that is set up for transmitting sends out a signal that is received by a plurality of the antennas of the radar sensor that are set up to receive, the control and evaluation device being designed, in the mentioned operating mode, for an individual estimation of an angle of a radar target to determine respective individual distances of the radar target for each of the evaluation channels, which correspond to different configurations of transmitting and receiving antennas, and to use the individual distances in the estimation of the angle of the radar target.

A system and method for locating radio-frequency identification tags within a predetermined area. The method can incorporate sub-threshold superposition response mapping techniques, alone, or in combination with other methods for locating radio-frequency identification tags such as but not limited to time differential on arrival (TDOA), frequency domain phase difference on arrival (FD-PDOA), and radio signal strength indication (RSSI). The system can include a plurality of antennas dispersed in a predefined area; one or more radio-frequency identification tags; a radio-frequency transceiver in communication with said antennas; a phase modulator coupled to the radio-frequency transceiver; and a system controller in communication with said transceiver and said phase modulator. Calibration techniques can be employed to map constructive interference zones for improved accuracy.

A positioning method includes acquiring configuration information from a ranging data frame structure. The configuration information includes a time offset. The time offsets of at least two different positioning devices differ from on another. The method includes determining a time domain position of a first time unit in the ranging data frame according to the time offset and sending a ranging message on the first time unit to a plurality of anchor devices within a preset range of the positioning device, the ranging message being used by a server to determine a position of the positioning device according to differences in times at which the ranging message is received by each of the plurality of anchor devices.

The present disclosure relates to a target following method, device, apparatus and system. The method includes: acquiring first orientation data sent by a UWB base station arranged on a target following apparatus and a following mode sent by a UWB beacon arranged on a target to be followed; processing, based on the following mode, the first orientation data to obtain second orientation data including a current distance between a target position and the UWB base station, and a second azimuth angle of a line where the target position and the UWB base station are located with respect to a current direction of a movement of the target following apparatus; and comparing the second orientation data with preset orientation data to obtain a comparison result, and controlling the target following apparatus to perform target following according to the comparison result.

A method for signal evaluation in a locating system that includes multiple radar sensors whose locating ranges overlap one another. The method includes evaluating the signal of a first of the radar sensors and identifying distance cells that are not empty, for at least one of these distance cells: selecting a second of the radar sensors and determining a distance range in which the objects situated in the distance cell would have to be situated from the viewpoint of the second radar sensor, and classifying the object configuration in the distance range, based on the signal of the second radar sensor.

Apparatus and methods useful in surveying to provide information rich models. In particular, information not readily or possibly provided by conventional survey techniques can be provided. In some versions targets provide reference for baseline positioning or improving position information otherwise acquired. Scanning may be carried out in multiple locations and merged to form a single image. Machine mounted and hand mounted scanning apparatus is disclosed.

A control device includes a control section configured to obtain one or more distance measurement values, and estimate a relative position of a position changeable type communication device with respect to a target space based on the one or more distance measurement values, the one or more distance measurement values being obtained when one or more position fixed type communication devices and the position changeable type communication device perform wireless communication, and indicating a distance between each of the one or more position fixed type communication devices and the position changeable type communication device.

A method and apparatus for ranging finding of signal transmitting devices is provided. The method of signal reception is digitally based only and does not require receivers that are analog measurement devices. Ranging can be achieved using a single pulse emitting device operating in range spaced relation with a minimum of a single signal transmitter and a single digital receiver and processing circuitry. In general a plurality of transmitting pulsed emitters may be ranged and positioned virtually simultaneously in 3-dimensions (XYZ coordinates) using a configuration of a plurality of digital receivers arranged in any fixed 3-dimensional configuration. Applications may involve at least one single transmitter to receiver design to determine range, or at least one transmitted reflecting signal off from an object to determine range.