679 results about "Wireless positioning" patented technology

The invention relates to the technical field of space behavior analysis, and discloses a user consumption behavior analysis method and system for different scenes in a commercial space, and the method comprises the steps: obtaining user behavior data through a wireless positioning device and a distributed environment sensor; performing space-time alignment on the multi-source heterogeneous data, and fusing commodity granularity data of a transaction system to construct a three-dimensional trajectory model; based on the three-dimensional track model, identifying residence characteristics and a moving mode of the user, and associating commodity distribution to generate a dynamic thermodynamic diagram; adjusting a guidance strategy and environmental parameters according to the density gradient of the thermodynamic diagram and the user attribute hierarchy; the payment feature data and the user behavior data are integrated to update the user tag, and a cross-regional association strategy is generated, the comprehensive, flexible and efficient commercial space user consumption behavior analysis method is provided, the problem that in the prior art, dynamic user behaviors are understood insufficiently is solved, and therefore the commercial intelligence process is promoted.

The invention discloses a target positioning method and system based on a single reference station, and relates to the field of wireless positioning, and the method comprises the steps: generating vortex electromagnetic waves carrying orbital angular momentum based on a transmitting end of a reference station, and generating a time-varying phase modulation transmitting signal and a metasurface time-varying coding sequence through a programmable metasurface; a time-varying phase modulation emission signal forms a multipath superposition effect in a propagation environment, a receiving end obtains a mixed signal of a direct wave and a reflected wave, and the receiving end carries out OAM mode separation on the mixed signal of the direct wave and the reflected wave through a spiral phase plate and an annular array to obtain signal components in different modes; and based on the signal component and the metasurface time-varying coding sequence, reconstructing an equivalent virtual array response by adopting a compressed sensing algorithm. According to the invention, the orbital angular momentum modal separation technology and the metasurface dynamic coding technology are creatively fused, and high-precision real-time direction finding in a complex multi-path environment is realized under a single base station architecture.

The invention discloses a broadcast type radio positioning system base station site selection analysis and evaluation method and system, and relates to the technical field of wireless positioning, and the method comprises the steps: building a radio ground base station deployment sample database and an elevation model database; based on a combined optimization strategy of a greedy algorithm and a genetic algorithm, selecting an optimal base station set covering a pre-working area from the database; constructing a three-dimensional evaluation system, and comprehensively evaluating the optimal base station set from three dimensions of deployment cost, system robustness and positioning precision; optimizing the base station set based on a digital twinning technology, wherein the optimization comprises multi-band signal emission modeling and machine learning recommendation of a historical case library; and dynamic presentation and parameter adjustment of a base station deployment effect are realized through a three-dimensional visual interface and an interactive sand table system. According to the method, a large-range working area can be well covered, the situation that a signal coverage blind area exists is avoided, then the working efficiency is improved, and flexible and efficient site selection evaluation on the radio ground base station in a local sudden battlefield can be achieved.

Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may send, to a first entity, first information indicating a maximum number of positioning signal transmissions or a maximum power for positioning signal transmissions that the UE can support. The UE may receive, from the first entity, configuration information for changing a positioning mode of the UE to a positioning mode selected from a first positioning mode and a second positioning mode. The UE may perform a positioning operation according to the selected positioning mode. In some aspects, the first positioning mode is a normal positioning mode in which the UE sends UL positioning reference signals to a plurality of TRPS, and the second positioning mode is a UL power-limited mode in which the UE sends UL positioning reference signals to only one or a small number of TRPs.

Disclosed are techniques for wireless positioning. In an aspect, a network entity may determine that a positioning reference signal (PRS) processing load for a UE exceeds a PRS processing capacity of the UE. The network entity may send, to the UE, assistance data that reduces the PRS processing load for the UE. In another aspect, a user equipment (UE) may determine, based on information received from a network entity, that one or more PRS measurements is associated with a low-latency location request. The UE may modify one or more parameters associated with the one or more PRS measurements to reduce measurement latency. The UE may perform the one or more PRS measurements associated with the low-latency location request according to the modified one or more parameters.

The invention relates to a high-safety iron tower climbing operation protection system which comprises a safety belt body with two safety hooks, a detection control mechanism, a locking mechanism, a cloud server and a mobile monitoring platform. The detection control mechanism comprises an infrared sensor arranged on the inner ring of the safety hook, a contact sensor arranged on the opening and closing part of the safety hook, a UWB wireless positioning module arranged on the safety hook and the waistband, a posture detection mechanism arranged in the safety rope, and a control chip, a wireless transmission module and a buzzer which are arranged on the buckle of the waistband; the locking mechanism comprises an electromagnetic lock arranged on a handheld driving part of the safety hook; the detection control mechanism and the locking mechanism cooperate with each other to realize virtual hanging, double unlocking, low hanging and high use monitoring of the safety hook, the monitoring data is uploaded to the cloud server, a guardian monitors the climbing operation through the mobile monitoring platform, and the safety of operators in the process of the climbing operation is improved.

Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) may determine a sidelink measurement gap for positioning (SL-MGP). The UE may perform sidelink positioning during the SL-MGP, wherein performing SL positioning comprises transmitting or receiving at least one sidelink positioning reference signal (SL-PRS). In another aspect, a network entity, such as a base station or a location server, may receive, from a UE, first information indicating SL-PRS processing capability of the UE. The network entity may determine a SL-MGP based at least in part on the first information. The network entity may send, to the UE, second information indicating the SL-MGP.

The invention relates to the cross technical field of satellite navigation and wireless positioning technology, in particular to a real-time dynamic high-precision positioning method based on Beidou and UWB tight coupling, which solves the problem that in the prior art, error coupling in Beidou and UWB observation data is not fully solved, and especially in a high-speed dynamic scene, the positioning accuracy is greatly improved. The mutual influence of the Beidou receiver clock error, the UWB base station clock error and the multi-path error causes the continuous accumulation of the error and the significant reduction of the positioning precision. The invention discloses a real-time dynamic high-precision positioning method based on Beidou and UWB tight coupling. A data preprocessing and space-time alignment module, an error joint estimation model, an ambiguity fast fixing algorithm, a geometric constraint enhanced positioning engine module and a dynamic coordinate conversion and fusion output module are included. According to the mode provided by the invention, a highly integrated multi-model Kalman filtering architecture is adopted, so that synchronous and accurate compensation of the clock error of the Beidou receiver, the time delay of the UWB base station and the multi-path effect is realized.

The invention belongs to the technical field of wireless positioning, and discloses a non-line-of-sight interference-resistant dynamic positioning method and a base station layout method for positioning. Comprising the following steps: calculating original distance measurement results of each initial base station in a label and a sub-region, obtaining current shielding probability and current signal intensity of the initial base station and current geometric accuracy factors of different initial base station combinations in an initial base station set, selecting candidate base stations, calculating information gain of each candidate base station pair, and obtaining the information gain of each candidate base station pair; selecting candidate base stations with information gains meeting preset requirements to construct a target base station subset, inputting an original ranging result of the target base station subset into a Kalman filter based on a motion state space model for processing, and compensating an NLOS time delay error through a sliding window mean value to obtain a positioning result of a label and an NLOS time delay error estimation value, the problem that the positioning result is not accurate enough in a complex environment is solved.

Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives, from a location server, assistance data for a positioning procedure, obtains a frequency offset measurement of one or more positioning reference signal (PRS) resources transmitted by at least one transmission-reception point (TRP) based on the assistance data, and enables a location of the UE to be determined based, at least in part, on the frequency offset measurement.

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to an intelligent aerial 3D printing and spraying system and method based on an unmanned aerial vehicle cluster, and the system comprises a spatial three-dimensional laser ranging scanning modeling module for generating a real-size scene model, a three-dimensional positioning network module, and a three-dimensional positioning network composed of a plurality of laser radar arrays. Wherein the laser radar or the wireless positioning beacon array is arranged on a working plane to construct a three-dimensional space coordinate reference system; the printing module is integrated on the unmanned aerial vehicle, compared with traditional high-altitude operation, the construction efficiency is improved, the constraint of tedious procedures such as scaffold building and manual high-altitude operation is thoroughly eliminated, the unmanned aerial vehicle cluster can be rapidly deployed in a short time, and operation tasks such as large-area single-color or full-color spraying, repairing, modeling and printing are efficiently completed with high precision; the project construction period is greatly shortened, the comprehensive construction cost is reduced, the safety construction level is improved, the engineering income is improved, and the construction accident risk is reduced.

An antenna device configured for wireless positioning. The antenna device includes a ground plane having a polygonal shape comprising at least 4 side edges. A plurality of chip antenna elements tuned to a predetermined radio frequency are each singly provided at one of said side edges with a spacing between adjacent ones of said chip antenna elements corresponding to ½ of a wavelength of said predetermined radio frequency. A patch antenna element tuned to said predetermined radio frequency is provided at a center portion of a front side of the ground plane.

The invention relates to the technical field of evacuation intelligent simulation, in particular to a fire-fighting evacuation path dynamic planning method and system based on digital twinning. In the fire-fighting evacuation path dynamic planning method and system based on digital twinning, a digital twinning environment containing multi-dimensional real-time sensing data such as temperature, smoke and heat radiation intensity is constructed; the method can dynamically analyze space-time evolution characteristics such as fire spreading trend and heat accumulation, further carries out accurate quantitative evaluation on the danger level of each segment of an evacuation path, and meanwhile, integrates video monitoring and wireless positioning information to grasp the specific positions and moving tracks of people in a building in real time, thereby improving the safety and reliability of the evacuation path. The actual flow bottleneck is identified based on the flow direction consistency, the distribution density and the congestion condition of the crowd, and finally, the dynamic danger of the fire environment and the macroscopic flow trend of the crowd are combined, and the passage cost value of each path section is subjected to dual dynamic correction, so that the flow rate of the crowd is improved. And an evacuation path planning result giving consideration to fire hazard avoidance and crowd congestion evacuation is generated, so that the real-time performance and safety of evacuation decision making are effectively improved.

The invention relates to the technical field of wireless positioning, and provides a high-speed rail user positioning method and system based on trajectory compensation, and the method comprises the steps: recognizing high-speed rail users, carrying out the data preprocessing, constructing high-speed rail grids, and generating a signal fingerprint database; preliminarily screening out a plurality of candidate grids according to RSRP and TA signal features reported by high-speed rail users in real time; based on the service cell switching sequence, a hidden Markov model or particle filtering is adopted for motion trail modeling, and the advancing direction and speed of a train are recognized; introducing a multi-source information fusion and grid compensation strategy; and selecting a final positioning result from the candidate grids in a weighted voting mode, and outputting grid IDs and latitude and longitude coordinates. Through multi-source data fusion, track compensation and intelligent decision making, the positioning precision and reliability of the high-speed rail user in a complex mobile environment are remarkably improved, and the method has important technical popularization value.

The invention relates to the field of electronic communication and wireless positioning, in particular to a long-distance cellular positioning technology. The method aims at some special scenes such as tunnels, urban canyons and other complex terrains. In the above scene, the GNSS signal has the problems of positioning failure and poor positioning precision. Based on the mature construction of domestic commercial base stations at present and the realization of LTE signal coverage in most of areas, the method introduces cellular signals (LTE) as opportunity signals, completes channel estimation from the base stations to user equipment by using pilot signals in the cellular signals, extracts time delay parameters from an estimated channel matrix through an ESPRIT (Estimation Signal Random Interference Technology) algorithm, and finally achieves the coverage of LTE signals in the most areas. Therefore, TOA estimation is completed, and pseudo-range measurement is realized. After pseudo-range measurement is completed, the precision and robustness of the system are improved through extended Kalman filtering (EKF), and the stable and high-precision vehicle-mounted positioning system is successfully realized through simulation and actual measurement verification.

The invention relates to a chained two-dimensional positioning system based on an ultra-wideband signal and an implementation method thereof, and belongs to the technical field of wireless positioning. The UWB signals are transmitted in a chained manner, and high-precision two-dimensional positioning of a plurality of link nodes can be realized in a tunnel environment by only one terminal node. The system utilizes known terminal node positions, tunnel geometrical shapes and distance measurement data between adjacent nodes, combines a nonlinear least square optimization algorithm, constraint optimization and graph optimization technologies and an error correction and filtering method, overcomes the limitation of a traditional positioning technology in a complex environment, and improves the positioning accuracy. The method has the advantages of high precision, low cost and flexible deployment, and is suitable for multiple application fields such as tunnel monitoring, intelligent transportation and industrial automation.

Disclosed are techniques for wireless positioning. In an aspect, a network entity may determine that at least one sidelink positioning reference signal (SL-PRS) resource should be cancelled or rescheduled. The network entity may send, to at least one user equipment (UE), a sidelink cancellation indication (SLCI) indicating the at least one SL-PRS resource to be cancelled or rescheduled. In another aspect, a UE may determine that at least one SL-PRS resource should be cancelled or rescheduled. The UE may cancel or reschedule the at least one SL-PRS resource.

Device localization (e.g., ultra-wideband device localization) may be used to provide coordinated outputs and / or receive coordinated inputs using multiple devices. Providing coordinated outputs may include providing partial outputs using multiple devices, modifying an output of a device based on its position and / or orientation relative to another device, and the like. In some cases, each device of a set of multiple devices may provide a partial output, which combines with partial outputs of the remaining devices to produce a coordinated output.

The invention relates to the technical field of wireless positioning, in particular to an intelligent positioning analysis method and system for a safety tool, and the method comprises the steps: collecting the video data and voice data of a high-altitude operation site in real time through a video collection module worn by an operator; the method comprises the following steps: acquiring far-end high-altitude operation video data through a ground camera, and when the far-end high-altitude operation video data is lower than a preset value, acquiring three-dimensional position data of personnel in real time through a wireless positioning module; establishing a three-dimensional electronic fence model on the monitoring platform, and synchronizing the three-dimensional position data to the three-dimensional electronic fence model; when the monitoring platform detects that the three-dimensional position data exceed the three-dimensional electronic fence, early warning is triggered; after early warning is triggered, video data and voice data of the aerial work site in the corresponding time period are obtained, personnel posture information in the video data is analyzed, and abnormal types are recognized in combination with voice keywords. Therefore, personnel supplementary positioning under the condition of low visibility can be realized, and the reliability of the positioning monitoring system is improved.

The invention discloses an industrial asset indoor wireless positioning method based on integrated learning and an RNN neural network, and relates to the technical field of mobile industrial asset target indoor positioning. WIFI positioning and UWB positioning are combined, firstly, a large-range indoor positioning area is divided into unit areas, and the unit areas are divided into unit areas; wIFI positioning adopts an integrated learning algorithm aggregated by various machine learning algorithm models and is used for resolving a specific area where a moving target is located; a UWB positioning RNN model in the area is used to determine the accurate position or moving path of the moving target in the area; and finally, according to the coordinate back propagation error of accurate positioning, updating the weight of various machine learning to correct the model, and gradually optimizing the current model through multiple iterations to achieve the optimal positioning model in the scene. According to the invention, a moving target indoor positioning method with clear grading is established, a reliable target positioning method and process are provided, and the disadvantages of unclear grading, limited adaptability, incapability of full-process tracking and the like of the existing positioning mode are improved.

The application provides an angle of arrival measurement method, an electronic device, a readable storage medium and a chip, and relates to the technical field of wireless positioning. The method is applied to an electronic device, and the electronic device comprises a first antenna and a second antenna. The antenna radiation field patterns of the first antenna and the second antenna are similar within a first angle range around the electronic device and are not similar within a second angle range around the electronic device. The method comprises the following steps: determining the difference between target parameters measured by the first antenna and the second antenna according to a wireless signal; determining the angle of arrival range of the wireless signal according to the difference; wherein the angle of arrival range is the first angle range or the second angle range; and measuring the angle of arrival of the wireless signal by using the first antenna and the second antenna according to the angle of arrival range. The technical scheme provided in the embodiment can improve the accuracy of angle of arrival measurement.

The invention discloses a semi-supervised learning positioning method based on channel mapping, belongs to the field of signal processing, and is applied to the problem of wireless positioning of user equipment in a communication and sensing integrated network. According to the method, mass unlabeled channel data which is easy to obtain is fully utilized, and the implicit relationship between the channel and the position is learned from the unlabeled data and the labeled data together. The semi-supervised learning scheme provided by the invention can be divided into two stages: firstly, pre-training an unsupervised dual-branch channel mapping twin network by using an unlabeled data set, and then performing supervised training fine tuning on the dual-branch channel mapping twin network and an overall positioning network of a positioning head module by using a labeled data set. According to the method, only a small part of labeled data is used, and robustness and positioning performance superior to a supervised learning algorithm and other baseline algorithms are obtained.

This disclosure provides methods, devices and systems for wireless positioning. An example method includes determining a first received signal strength indicator (RSSI) signature, the first RSSI signature including a respective RSSI associated with each access point (AP) of a first plurality of APs, where the first plurality of APs form at least a portion of a mesh network of APs, comparing the first RSSI signature with each reference RSSI signature of a first plurality of reference RSSI signatures, each reference RSSI signature of the first plurality of reference RSSI signatures including a respective RSSI associated with each AP of the first plurality of APs, and identifying a first position of the wireless STA based on the comparing of the first RSSI signature.

The invention provides an unmanned aerial vehicle positioning method and system based on a wireless positioning beacon and a program product, and relates to the technical field of unmanned aerial vehicle positioning, and the unmanned aerial vehicle positioning method comprises the steps: obtaining the first position information of the wireless positioning beacon, the second position information of an unmanned aerial vehicle, and the measurement distance information between the wireless positioning beacon and the unmanned aerial vehicle; determining a relative error vector of the unmanned aerial vehicle relative to the wireless positioning beacon based on the measurement distance information, the first position information and the second position information; and determining relative position information between the unmanned aerial vehicle and the wireless positioning beacon based on the relative error vector.

The invention discloses a high-precision indoor positioning system based on a smart bracelet, and the system comprises a data processing module which is used for obtaining and preprocessing multi-source sensing data collected by the smart bracelet; the gait reckoning module is used for executing gait event detection and pedestrian dead reckoning processing; the wireless observation module is used for carrying out preprocessing and credibility evaluation on indoor wireless positioning observation data; the fusion positioning module is used for carrying out credibility weighted fusion; the trajectory constraint module is used for applying trajectory rationality constraint and correcting abnormal position points; the error correction module is used for constructing a positioning error dynamic correction model and executing online correction processing; and the track output module is used for carrying out smoothing and time resampling processing and extracting a human body position determination result set. The method is based on the multi-source perception fusion and federated Kalman dynamic correction method, achieves the indoor high-precision positioning of the smart bracelet, and has the advantages of continuous track, controllable error and high environmental adaptability.

The invention discloses an ultra wide band (UWB) robust positioning method for a non-line-of-sight (NLOS) interference environment, and belongs to the technical field of wireless positioning. According to the method, firstly, all three-base-station combinations are generated through a permutation and combination method, the initial position of each group of base stations is solved through a trilateral positioning method, and a multi-dimensional coarse positioning point cloud is formed; then grouping the coarse positioning points according to the resolving participation condition of the base stations, acquiring representative position points of the base stations by adopting a central position estimation algorithm, and constructing a base station space distribution model; a mean vector and a covariance matrix of the point cloud are calculated, after a pseudo-inverse matrix is solved through SVD decomposition, the mahalanobis distance from each representative point to the distribution center is calculated, a dynamic threshold value is set according to the 95% confidence coefficient of chi-square distribution, a base station with the distance exceeding the threshold value is judged as an NLOS abnormal node, and data of the base station is abandoned; and finally, constructing a dual-stage anomaly suppression mechanism: screening reliable base stations based on geometric consistency at a measurement stage, dynamically adjusting the Kalman gain through an exponential gain constraint factor at a residual stage, constructing a dynamic noise model by fusing a geometric precision factor, and realizing position calculation by adopting improved extended Kalman filtering. According to the method, the positioning error can be effectively reduced in the NLOS interference environment, and a centimeter-level reliable positioning solution is provided for the fields of industrial Internet of Things or indoor positioning and the like.

The invention provides a positioning method and electronic equipment, and relates to the technical field of terminals. According to the method and the device, the initial position of the positioned second electronic equipment can be quickly determined according to the auxiliary judgment signal transmitted between the pre-configured auxiliary judgment units in the first electronic equipment and the second electronic equipment, so that the positioning success rate is effectively improved, and meanwhile, the initial abnormal position positioning time can be greatly shortened. The method is applied to first electronic equipment, the first electronic equipment comprises a first wireless positioning module, auxiliary judgment units are arranged in M signal areas of the first wireless positioning module, the optical angles of the auxiliary judgment units are smaller than or equal to the signal coverage angles of the corresponding signal areas, and M is a positive integer. The method comprises the following steps: receiving an auxiliary judgment signal sent by second electronic equipment through a first auxiliary judgment unit; and judging the validity of target positioning data acquired by the first electronic equipment through the first wireless positioning module according to the auxiliary judgment signal.

The invention relates to the technical field of geographic positioning, provides a vehicle positioning method and system based on a multi-source fusion technology, and a computer readable storage medium, and realizes accurate vehicle positioning by fusing the multi-source fusion positioning technology of GNSS positioning, UWB short-distance wireless positioning, SINS positioning and OBD data positioning. By means of the multi-source fusion positioning technology, the effect that stable, reliable and continuous navigation positioning information can be provided for the vehicle even under the condition of signal blind areas or weak signals is achieved.

The invention relates to the technical field of wireless positioning, and particularly provides a method for improving mine positioning precision by using signal confidence, which comprises the following steps of: receiving a signal of a wireless carrier communication tag; calculating a signal confidence coefficient and a distance measurement value according to the signal of the wireless carrier communication tag; performing state prediction and state updating on the distance measurement value by adopting a filter; a first distance prediction value is obtained through state prediction, whether the deviation between the distance measurement value and the first distance prediction value meets a preset condition or not is judged, if yes, the distance measurement value is adopted as an observation value of a filter to conduct state updating and output a positioning result, and if not, a second distance prediction value obtained through calculation of a neural network model is obtained; and using the second distance prediction value as an observation value of a filter to carry out state updating and outputting a positioning result. According to the technical scheme of the invention, the problem of poor positioning precision caused by easy reflection of signals in a mine laneway environment can be effectively solved.

Disclosed are techniques for wireless positioning. In an aspect, a user equipment (UE) receives, from one or more transmission-reception points (TRPs), one or more on-demand downlink positioning reference signals (DL-PRS), the one or more on-demand DL-PRS having one or more downlink transmission parameters, and transmits, to the one or more TRPs, one or more uplink positioning reference signals (UL-PRS), the one or more UL-PRS having one or more uplink transmission parameters, wherein values of the one or more uplink transmission parameters are the same as or within a threshold of values of the one or more downlink transmission parameters.