14 results about "Radio fix" patented technology

Disclosed are systems, methods, and non-transitory media for providing signaling consideration for wireless positioning with disjoint bandwidth segments. For instance, one or more indications of a preferred bandwidth configuration can be transmitted by a user equipment. Based on the one or more indications, the user equipment can receive a positioning configuration that indicates disjoint bandwidth segments containing a positioning reference signal based on the preferred bandwidth configuration. In response, the user equipment can then determine one or more positioning measurements based on the positioning reference signal in the disjoint bandwidth segments.

The present application relates to the field of radio positioning technology, in particular to a kind of helicopter emergency rescue positioning method and system, comprising the following steps: ground base station through the initial positioning signal sent by helicopter in rescue area, the time stamp of signal is bound with signal data, the signal time mark data is generated by analyzing the relevance of data and time.In the present application, by using time axis reversal and adjusting signal amplitude, the signal quality is optimized, the stability and reliability of signal in interference environment are enhanced, through encoding processing, the signal can reduce loss in transmission process, the transmission effect of signal is optimized, the overall receiving efficiency of signal is improved, the ground base station uses signal propagation time difference and path change data, carries out multiple comparison, calculates helicopter position in real time, significantly improves the accuracy and efficiency of rescue positioning, realizes the goal of quick and accurate positioning in emergency rescue, improves the success rate and safety of rescue.

A communication method and a related device, in which method a first signal sent by a first communication device for sensing is carried in a first frequency band, the first frequency band being different from a second frequency band. Wherein the second frequency band is located in a mobile service frequency spectrum, and part or all of the first frequency band is located in a radio positioning service frequency spectrum. In other words, a portion or all of the perceived signals may be carried on the radio positioning traffic spectrum. Therefore, different communication devices can use the radio positioning service frequency spectrum to realize transmission of the sensing signal, interference of the communication signal transmitted on the mobile service frequency spectrum on the sensing signal can be avoided or reduced, and the sensing performance is improved. In one possible implementation, the bandwidth of the first frequency band may be greater than the bandwidth of the second frequency band. In addition, since the size of the sensing bandwidth is positively correlated with the size of the sensing performance, different communication devices can use the first frequency band to realize the transmission of the sensing signal so as to further improve the sensing performance.

A communication method and a related apparatus. In the method, a first signal for sensing, which is sent by a first communication apparatus, is carried in a first frequency band, the first frequency band being different from a second frequency band, wherein the second frequency band is located in a mobile service spectrum, and part or all of the first frequency band is located in a radio location service spectrum. In other words, part or all of a sensing signal may be carried on the radio location service spectrum. Thus, different communication apparatuses can use the radio location service spectrum to realize the transmission of sensing signals, and can avoid or reduce interference, to the sensing signals, from communication signals transmitted on the mobile service spectrum, thereby improving the sensing performance. In a possible implementation, the bandwidth of the first frequency band may be greater than the bandwidth of the second frequency band. Since the size of a sensing bandwidth is positively correlated with the sensing performance, different communication apparatuses can use the first frequency band to realize the transmission of sensing signals, thereby further improving the sensing performance.

The application provides a Doppler positioning method based on frequency hopping spread spectrum, and belongs to the technical field of radio positioning, to solve the problem that the fixed carrier frequency mode adopted by the traditional Doppler positioning technology makes the signal extremely easy to be intercepted, oriented and interfered. The method comprises the following steps: step 1: describing an application scenario; step 2: in the application scenario, a frequency hopping measurement signal is sent by a transmitting end; step 3: in the application scenario, a receiving end performs frequency hopping synchronization and measures a Doppler shift; step 4: a Doppler shift is preprocessed; and step 5: the preprocessed Doppler shift is used to calculate the position of a terminal to be positioned in combination with the relative motion of the transmitting end and the receiving end. The method can obtain the low interception rate and anti-interference ability given by the rapid change of the carrier frequency, and can also use the frequency diversity characteristics of frequency hopping to reduce the positioning performance deterioration caused by the multipath effect, and is suitable for application scenarios with high requirements for robustness, positioning accuracy and other performances.

The application discloses a kind of civil active emission echo radio positioning system and method, by oneself antenna array, oneself signal processor and power supply and the other party antenna, the other party signal processor and the other party power supply composition.Pass through oneself antenna array and emit radio signal, the other party antenna detects after active radio signal is emitted back oneself antenna array, respectively detects each antenna in oneself antenna array, with the distance or phase or signal frequency or propagation time difference of the other party antenna, after oneself signal processor calculation and using oneself power supply, and the other party signal processor calculation and using the other party power supply, can accurately position oneself and the other party spatial relative position.The radio positioning system is composed of oneself antenna array, oneself signal processor and power supply and the other party antenna, the other party signal processor and the other party power supply composition.Solve the problem that object between aircraft, automobile, ship, pedestrian etc.are not easy to position, improve information transparency, and have good promoting effect to the development of traffic industry.

The embodiment of the invention relates to the technical field of constructional engineering, and discloses a curtain wall unit plate hoisting navigation monitoring method and system.The method comprises the steps that in the process of hoisting a target curtain wall unit plate, at least three linear distances are determined based on at least three base stations located in the same installation plane with a target curtain wall unit; determining actual coordinates of the target curtain wall unit plate based on the linear distances, the obtained coordinates of the base stations, the current position of the winch, the number of rotation turns of the winch and the diameter of the winch; and when it is determined that the actual coordinates are equal to the preset target coordinates based on the obtained historical actual coordinates and the historical preset target coordinates, the target curtain wall unit plate is controlled to stop moving, so that the target curtain wall unit plate is installed at the position corresponding to the preset target coordinates. The penetrability of radio signals is higher than that of satellite signals, and the accuracy of determining the position of the target curtain wall unit plate is improved in a radio positioning mode in a scene where satellite positioning is serious due to signal shielding.

Systems and methods for enabling data collection at a Radio Access Network (RAN) node for RAN node assisted positioning with a RAN node side model. In one embodiment, a method performed by a RAN node for data collection for training, retraining or evaluating an Artificial Intelligence (AI) or Machine Learning (ML) (i.e., AI / ML) model for positioning in a wireless communication system comprises sending, to a Location Management Function (LMF), a New Radio Positioning Protocol a (NRPPa) message that indicates requested positioning-related data. The method further comprises receiving, from the LMF, an NRPPa message comprising the requested positioning-related data and training, retraining, and / or evaluating a performance of an AI / ML model for positioning in the wireless communication system, based on the received positioning-related data. In this manner, the RAN node is enabled to collect positioning data information.

The invention relates to the technical field of unmanned aerial vehicle positioning, and provides an unmanned aerial vehicle radio communication positioning method and system, and the method comprises the following steps: obtaining target data when a first radio positioning signal of an unmanned aerial vehicle is in a first interference state; the first moment is the previous moment of the current moment; determining a position range of the unmanned aerial vehicle at the current moment according to the target data; determining whether the first radio positioning signal is in a second interference state according to the first radio positioning signal and the position range of the unmanned aerial vehicle; the signal interference degree corresponding to the second interference state is greater than the signal interference degree corresponding to the first interference state; and when the first radio positioning signal is in the second interference state, determining target position information of the unmanned aerial vehicle at the current moment according to the first radio positioning signal and the position range of the unmanned aerial vehicle. The accuracy of unmanned aerial vehicle positioning can be improved.

The invention discloses an electric power system inspection unmanned aerial vehicle cooperative positioning method and system, relates to the field of radio positioning, and aims to improve the positioning precision and cooperative capability of an unmanned aerial vehicle group in an electric power inspection process. By introducing a hierarchical positioning mechanism of the piloting unmanned aerial vehicle and the common unmanned aerial vehicle, the piloting unmanned aerial vehicle is responsible for providing high-precision positioning data, and the common unmanned aerial vehicle performs positioning calibration through communication with the piloting unmanned aerial vehicle. According to the method, a GPS, an inertial navigation system and a visual SLAM technology are combined, environmental factors such as wind speed, illumination intensity and the like are comprehensively considered, and calibration frequency and time window duration are dynamically adjusted by calculating credibility of each unmanned aerial vehicle. According to the method, the adaptability and the collaborative operation capability of the unmanned aerial vehicle group in a complex environment are remarkably enhanced, the dependence on the performance of a single unmanned aerial vehicle is reduced, high-precision positioning can still be kept in an environment with weak or changeable GPS signals, and the method has a wide application prospect.

The invention discloses a spin scanning direction finding and cross positioning method based on a single unmanned aerial vehicle platform, and relates to a radio positioning technology. The method comprises the following steps: controlling an unmanned aerial vehicle carrying a directional antenna to hover at a first measurement point and spin around an axis, and synchronously acquiring received signal strength (RSSI) and a yaw angle; obtaining a first azimuth angle of the radiation source by detecting an RSSI peak value; then the unmanned aerial vehicle flies to a second measurement point to repeat the process to obtain a second azimuth angle; and finally, calculating the coordinates of the radiation source by using a cross positioning principle according to the coordinates and the azimuth angles of the measurement points. According to the invention, the antenna mechanical scanning is realized by using the spinning of the unmanned aerial vehicle, the single-station multi-point direction finding and positioning are realized by using extremely simple hardware (single antenna), and the method has the advantages of low cost, fast deployment and easy integration, and is suitable for fast searching and positioning of a ground fixed radiation source.

The application discloses a kind of field exploration positioning modeling integrated systems based on radio positioning, core module includes data control module, transceiver control module and three-dimensional modeling module;Among them, data control module is used to start and execute positioning task, provides positioning information to three-dimensional modeling module;Transceiver control module responds to positioning control instruction, corrects positioning and generates positioning information and returns to data control center;Three-dimensional modeling module obtains the positioning information sent from data control module, realizes the real-time construction and update of map three-dimensional model in combination with map information;Core module is integrated on a circuit board and is integrally packaged, and constitutes field exploration positioning modeling integrated system.According to the above technical scheme, hardware integration and data center can be uniformly scheduled, multiple functions can be aggregated into a single system, which can significantly reduce equipment redundancy, ensure the accuracy of modeling and positioning, enhance the adaptability to field environment, and improve the precision of three-dimensional modeling.

This invention belongs to the field of radio positioning technology, specifically relating to a signal source positioning method based on a smart metasurface assisted by maximum parallelism. Utilizing the phase reconfigurability of the smart metasurface, a zero-mean phase coefficient is constructed. The user-access point direct channel matrix and the user-smart metasurface-access point cascaded channel tensor are separated, and parallelism operations are performed with the array response codebook matrix of the direct channel and the array response codebook tensor of the cascaded channel, respectively, to obtain the parallelism spatial spectrum of the user-access point and user-smart metasurface. The user's position is estimated by finding the angle corresponding to the peak of the spatial spectrum and using the least squares method. Compared to the traditional 2D-MUSIC method, which requires two-dimensional peak search, this invention employs two one-dimensional peak searches, significantly reducing computational and search complexity. Simultaneously, by setting time-varying smart metasurface phase coefficients, this invention maximizes the spatial degrees of freedom of the smart metasurface through spatiotemporal transformation.

The invention discloses a multi-source RTCM data preferential processing method and system, particularly relates to the technical field of differential data services in a satellite radio positioning system, and is used for solving the risk of differential service interruption caused by the fact that an existing RTK base station depends on a single data source and a single transmission link. The method comprises the following steps of: simultaneously connecting a network RTK (Real Time Kinematic) and a plurality of data sources of a local positioning module by configuring a reference station, receiving an RTCM data packet of each data stream in parallel and performing real-time verification; when a plurality of effective data packets compete for each other, performing prospective evaluation and preferential selection based on a historical association relationship between data packet characteristics and multi-band broadcast efficiency, and generating current effective RTCM data; and at least two wireless data transmission modules with different working frequency bands are used for broadcasting and sending at the same time. Redundancy is constructed on a data source and a wireless link, and the reliability and continuity of differential data required by high-precision positioning applications such as unmanned aerial vehicle formation are remarkably improved in combination with a cross-layer optimized intelligent preferential mechanism.