Systems, methods, and apparatus cause a first wireless device to transmit to a plurality of locator devices, an extended signal including a first segment and second segment. The first segment includes an indication for each of the plurality of locator devices to listen for a change in the extended signal from the first segment to the second segment. The second segment includes an indication for each of the plurality of locator devices to rotate through a plurality of antennas to receive the second segment via the plurality of antennas. Responsive to the transmitting of the extended signal, receiving direction data from each of the plurality of locator devices.

Apparatuses and methods are disclosed that allow for the detection, identification and direction finding of search and rescue beacons in a variety of environments. The techniques may be used to identify a line of bearing (LOB) to 121.5 MHz rescue beacons found in aircraft (ELTs), marine beacons (EPIRBs), and personal locator beacons (PLBs). Multiple lines of bearing may be used to geo-locate a target emitter if so desired. The methods may utilize, for example, a handheld device that is designed for search and rescue activity. Additionally, this device may be able to decode a 406 MHz frequency beacon that communicates with the satellite system that is controlled by COSPAS SARSAT. This constellation of rescue satellites coordinates the location of 406 MHz rescue beacons.

In one embodiment, a device obtains a machine learning model indicative of how to focus on particular location information from a plurality of radio frequency (RF) elements to provide an accurate location estimate of a wireless client based at least in part on angle-of-arrival information of the wireless client. When the device then obtains location information regarding the wireless client from the plurality of RF elements, it may apply the machine learning model to the location information regarding the wireless client to focus on particular location information of the location information from the plurality of RF elements. The device may then estimate a physical location of the wireless client based on focusing on the particular location information during a locationing computation.

Systems, methods, and apparatus receive a signal from a first wireless device through a first antenna, of a plurality of antennas, the signal including a first segment and a second segment. Responsive to detecting a change in the signal from the first segment to the second segment, embodiments traverse the plurality of antennas to receive the second segment through each of the plurality of antennas. Embodiments determine a plurality of phase samples, each associated with the second segment received through one of the plurality of antennas. Embodiment then use the plurality of phase samples to calculate direction data associated with the first wireless device.

The present disclosure obtains a correction value that corrects measurement angle error signals more accurately than conventional methods even in a case where a radio wave signal-to-noise ratio is low, and thus tracks a communication counterpart more accurately than the conventional methods.

The present disclosure includes a program controller 28 that generates a command value of an orientation direction of an antenna 1 and outputs the generated command value to an antenna drive controller 27, the command value being changed in accordance with a predetermined change scenario 54; a correction value calculator 32 that calculates a phase correction value , based on at least three pieces of error measurement data 55 including (i) an arrival direction error obtained from a sum signal and a difference signal of reception signals, the arrival direction error representing a difference between the orientation direction and an arrival direction being a direction from which the radio waves come and arrive and (ii) an orientation direction actual measurement value being an actual measurement value of the orientation direction when the arrival direction error is obtained, the phase correction value being an angle by which the arrival direction error is rotated; and a tracking controller 33 that outputs, to the antenna drive controller 27, as the command value, a value obtained by adding the arrival direction error corrected based on the phase correction value to the orientation direction actual measurement value.

A method and apparatus for reducing magnetic tracking error in the position and orientation determined in an electromagnetic tracking system is disclosed. In some embodiments, a corrected position and orientation is blended with an uncorrected position and orientation based upon the calculated probability of each. To determine a corrected position and orientation, data from an IMU in the receiver is used to obtain a constraint on the orientation. In other embodiments, the amount of detected error due to electromagnetic distortion is measured. Any error is first assumed to be from floor distortion, and a correction is applied. If the error is still deemed too great, a constraint is again obtained from IMU data. Using this constraint, another correction for the distortion is made. The solution from this correction may be blended with a standard solution and the solution from the floor distortion to arrive at a final solution.

A method for direction finding of at least one stationary and/or moving transmitter comprises the following steps: measuring the signals emitted by each of the at least one transmitter at at least two different measurement points; determining the location of the measurements points at the time of the measurement; determining the bearings from the measurement points to each of the at least one transmitter; transferring the bearings to a pre-trained artificial neural network; and estimating the locations of the at least one transmitter by the artificial neural network. Further, a system for direction finding of at least one stationary and/or moving transmitter is shown.

Systems, methods, and apparatus receive a signal from a first wireless device through a first antenna, of a plurality of antennas, the signal including a first segment and a second segment. Responsive to detecting a change in the signal from the first segment to the second segment, embodiments traverse the plurality of antennas to receive the second segment through each of the plurality of antennas. Embodiments determine a plurality of phase samples, each associated with the second segment received through one of the plurality of antennas. Embodiment then use the plurality of phase samples to calculate direction data associated with the first wireless device.

Systems, methods, and devices are disclosed for enabling a mobile device with limited RF capability to obtain accurate directions for finding an object or asset via a multiple-antenna locator device. The mobile device generates a request to the locator device to obtain directions to find the asset. A request can also be made to obtain the mobile device's own location from the multiple-antenna locator device which has an antenna array and is in a fixed location that has good RF visibility. The locator device identifies the target asset and receives an RF signal from it using the antenna array. The signal is detected at each antenna and phase samples are recorded. The phase sample data is used in angle-related functions, such as angle of arrival and angle of departure algorithms to calculate the direction of the asset.

The present invention discloses an information processing method, an electronic device and a computer storage medium. The method is applied to a mobile electronic device, the electronic device is provided with an image collection unit, the image collection unit can carry out image collection, and the method includes: acquiring a first instruction, wherein the first instruction is used for indicating to carry out image collection based on target tracking; responding to the first instruction, and acquiring position information between a target object and the electronic device; acquiring a first parameter according to the position information, and controlling a movement state of the electronic device according to the first parameter, so that the electronic device tracks the target object, wherein the first parameter is a parameter used for controlling the movement state of the electronic device; and acquiring a second parameter according to the position information, and controlling an image collection posture of the image collection unit according to the second parameter, so that the image collection unit can acquire an image satisfying a first condition in a process when the electronic device tracks the target object.