70 results about "Area navigation" patented technology

The invention discloses an ice layer thickness prediction method and system based on multi-modal sensor data fusion. According to the invention, by integrating various types of sensors, such as a microwave sensor, an ultrasonic sensor and an infrared thermal imaging sensor, multi-dimensional and omnibearing monitoring of the thickness of the ice layer is realized. The multi-modal data fusion strategy effectively overcomes the limitation of a single sensor in a complex environment, and improves the comprehensiveness and accuracy of data acquisition. In particular, due to the application of a self-adaptive sensor calibration module, sensor data are calibrated in real time by using advanced technologies such as a Kalman filtering algorithm and the like, so that measurement errors and noise interference are remarkably reduced. And the fused data is intelligently analyzed and processed through a deep learning algorithm and a time sequence prediction model, so that the prediction model is further optimized, the accuracy and reliability of ice layer thickness prediction are improved, reliable data support is provided for applications such as ice region navigation and ocean engineering, and the safety risk and operation cost can be reduced.

This paper constructs a remote sensing sea ice dataset and, based on the characteristics of sea ice images, improves the YOLOv5 model by adding the SE attention mechanism, improving the SPP pooling pyramid structure, and replacing the SiLU activation function with the FReLU. The model's confidence is verified using evaluation metrics such as accuracy, recall, F1-score, and mean average precision, ultimately resulting in an optimal sea ice target detection model. The test set is input into the target detection model to obtain recognition results, extracting information such as the location and size of the sea ice. Based on this extracted information, a grid map is created. The starting and ending points are determined based on the ship's own position, and a path is planned using the Theta* algorithm. The generated path is evaluated using metrics such as route distance, average offset distance, number of ship turns, and number of sea ice avoidances. This paper implements sea ice recognition at a remote sensing scale, constructs simulated navigation scenarios, and plans the optimal navigation path. This paper can improve the safety of ships sailing in ice areas and provide technical support for collision avoidance and navigation decision-making assistance in ice areas.

The invention provides a scenic spot navigation method, system and device based on location services and a medium, and belongs to the technical field of scenic spot navigation, the method comprises the following steps: developing a scenic spot navigation light application based on a host application, and presetting location data of each scenic spot and a dynamic distance trigger threshold configuration rule for judging the location of a user; starting a scenic spot navigation light application, and obtaining a user position and a current positioning precision parameter through a real-time position interface of a host application; executing a dynamic distance trigger threshold configuration rule, and dynamically calculating a distance trigger threshold of each scenic spot according to the scenic spot distribution density and the current positioning precision parameter; when the distance between the position of the user and a certain scenic spot is smaller than the corresponding distance triggering threshold value, staying timing is started, and corresponding voice explanation is triggered after the duration condition is met. The intelligent level and the user experience of the scenic area guide system are improved by dynamically adjusting the trigger threshold value and comprehensively considering the judgment of multi-dimensional factors such as the positioning precision, the scenic spot distribution density and the residence time.

The invention discloses a UWB-based market shopping guide system and method, and relates to the field of intelligent shopping guide, and the system comprises a positioning module, an acquisition fusion module, a model construction module, a shopping guide path generation module, an interference compensation construction module and a credibility evaluation module. According to the method, the problem of insufficient precision of WiFi and Bluetooth methods is effectively solved by combining a time difference arrival and arrival angle combined positioning mode of UWB. A five-level space mapping index is established, direct correspondence between a customer target and an actual position is achieved, and the commodity retrieval and navigation accuracy of the shopping guide system is improved. The machine learning model is used for modeling the residence time, the access frequency and the promotion interaction behaviors of the customers, and the preference distribution of the customers is dynamically calculated, so that personalized recommendation and interest area navigation are provided in the shopping guide process. A congestion prediction model and a customer behavior prediction mechanism are introduced in a path planning process, a high-flow area is dynamically avoided, an optimal shopping path is generated, and shopping guide efficiency and comfort are improved.

The invention relates to the technical field of intelligent transportation, in particular to a state space modeling method for ship ice region navigation decision model training, which comprises the following steps of: constructing a sea ice dynamic model, and estimating an unobservable sea ice state by using unscented Kalman filtering to obtain a hidden variable vector; inputting the hidden variable vector, the observable state information and the external force field code into a Transform encoder, and outputting future sea ice center position distribution; constructing a confidence collision avoidance domain of the time index according to future sea ice center position distribution, wherein the confidence collision domain is updated in a rolling manner along with time; taking observable state information, hidden variable vectors and transformation embedding of a confidence collision avoidance domain as reinforcement learning states, and adopting near-end strategy optimization to train a sea ice dynamic model; and obtaining a ship ice region navigation decision model based on a joint termination criterion of the verification set collision rate, the arrival rate and the strategy divergence. The method improves the strategy convergence stability and the ice region safety passing rate, and is suitable for autonomous navigation and simulation training of polar regions and high-latitude sea areas.

The invention provides an offshore area navigation safety control and optimization method, which comprises the following steps of: 1, acquiring multi-source observation data of an offshore navigation target, and preprocessing the multi-source observation data to obtain a space-time observation association diagram; 2, evaluating the dynamic credibility of each observation node by using a multi-modal consistency graph neural network; constructing an adaptive weighted factor graph model according to the obtained dynamic credibility, and solving a system state to obtain an optimal fusion track, a corrected environmental parameter and a posterior error covariance matrix; 3, constructing a regional risk field based on the optimal fusion track, the corrected environmental parameters and a posterior error covariance matrix; 4, on the basis of the regional risk field, a multi-target collaborative optimization model is constructed and solved, and navigation control parameters are obtained; and 5, executing the navigation control parameters, and performing adjustment and optimization by adopting multi-level closed-loop feedback to complete the navigation safety control and optimization of the offshore area.

The invention discloses a digital baseband processing method and device for a very high frequency omnidirectional beacon signal and a receiver, and relates to the technical field of signal processing, and the technical scheme is characterized in that the method comprises the following steps: carrying out AM demodulation on a VOR baseband signal to obtain a VOR envelope signal; processing the VOR envelope signal through band-pass filters BPF1, BPF2 and BPF3 to obtain a variable phase signal, a first reference phase signal, Morse code audio and air-ground communication voice; performing FM demodulation on the first reference phase signal to obtain a second reference phase signal; and carrying out amplitude normalization on the variable phase signal and the second reference phase signal, then carrying out Ref-Var phase discrimination to obtain a phase difference between the two signals, and converting the phase difference into an azimuth angle of the aircraft. By adopting the digital design, the use of analog devices is reduced, the system integration level is increased, higher angle measurement precision can be obtained, and the navigation performance required by civil aviation area navigation can be better met.

A method for controlling an autonomous mobile robot. According to one exemplary embodiment, the method comprises the storage and management of at least one map associated with an area of use for the robot and the navigation of the robot through the area of use for the robot, wherein the robot continuously determines its position on the map. The method further comprises the detection of a repositioning procedure, during which the robot carries out a movement that the robot itself cannot control. During this repositioning procedure, the robot detects information about its position and / or its state of motion with the aid of sensors and, based on the detected information, determines an estimated value for its position.

The invention provides a regional navigation positioning method, system and device based on sequential information, and a medium, which can effectively improve the positioning precision and reduce the calculation complexity when processing the sequential information, and have better precision and robustness. Under a satellite navigation denial condition, aiming at distance measurement information at different moments obtained by land-based radio area navigation, a factor graph model is established to represent an information transmission process between different moment states of a positioning target. Compared with a traditional Kalman filtering framework, the factor graph algorithm is better in positioning precision, higher in flexibility, lower in calculation complexity and better in robustness when sequential information is processed. According to the method, state estimation is converted into a nonlinear least square optimization problem, a Gaussian Newton method is adopted for iterative solution, and compared with extended Kalman filtering, the matrix operand is reduced by more than 40%.

The invention relates to an instrument navigation method, system and device, equipment and a storage medium. The method comprises the following steps: acquiring an actual path corresponding to an operation instrument, acquiring an expected path corresponding to the operation instrument, displaying an expected area according to the expected path, and generating navigation prompt information according to the actual path and the expected path; wherein the expected area is used for indicating to adjust the actual path to enter the expected area, and the navigation prompt information is used for indicating to adjust the actual path to be matched with the expected path. According to the method, preliminary adjustment can be realized on the basis of the expected area generated by the expected path to adjust the actual path to enter the expected area, further adjustment can be realized on the basis of the navigation prompt information generated by the actual path and the expected path to adjust the actual path to be matched with the expected path, and the actual path is adjusted on the basis of the prompt information. The consumed time is saved, and the operation efficiency is improved.

The application provides an ice area navigation dynamic sea ice risk early warning method and system, the method first acquires the navigation information of a target ship, the first navigation radar image information of a first time point and the second navigation radar image information of a second time point, and calculates the time interval of the two time points, then respectively extracts the interested region of the sea ice echo through a mask matrix, fills the pixels of the interested region of the sea ice echo and the pixels of other regions except the interested region of the sea ice echo with different colors to obtain the binary image of the sea ice echo of the two time points, then calculates the distance, azimuth angle of each piece of sea ice and the target ship, and the latitude and longitude coordinates of the sea ice centroid of the two time points by using a specific calculation method, calculates the sea ice collision probability and the sea ice collision consequence, further calculates the sea ice collision risk index, and performs corresponding different level sea ice risk early warning on the sea ice according to the comparison result of the sea ice collision risk index and the preset risk threshold of different levels.

The present invention provides a method for precise point positioning assisted by a regional navigation system. The method comprises: obtaining original satellite observation files and establishing a precise point positioning model for a train; obtaining original observation files of a regional navigation system and establishing a regional navigation system positioning model for a train; establishing a tight combination positioning model of a regional navigation system and precise point positioning for a train, and estimating the position, velocity, acceleration and carrier phase integer ambiguity parameters of the train online at each epoch by solving the tight combination positioning model of the regional navigation system and precise point positioning. The present invention is based on an extended Kalman filter algorithm, establishes a tight combination positioning model of a regional navigation system and precise point positioning, and estimates parameters such as position, velocity, acceleration and carrier phase integer ambiguity online at each epoch, thereby realizing a precise point positioning method assisted by a regional navigation system and expanding the positioning range of satellites.

The present application provides a kind of offshore area navigation safety control and optimization method, comprising: step 1, the multi-source observation data of offshore navigation target is collected, and pre-processing is carried out, to obtain the space-time observation correlation graph;Step 2, the dynamic credibility of each observation node is evaluated using multi-modal consistency graph neural network;According to the obtained dynamic credibility, an adaptive weighted factor graph model is constructed, and the system state is solved to obtain the optimal fusion track, the corrected environmental parameter and the posterior error covariance matrix;Step 3, based on the optimal fusion track, the corrected environmental parameter and the posterior error covariance matrix, a regional risk field is constructed;Step 4, based on the regional risk field, a multi-objective collaborative optimization model is constructed and solved to obtain the navigation control parameter;Step 5, execute navigation control parameter, and adopt multilevel closed loop feedback to optimize, complete offshore area navigation safety control and optimization.

A water-air integrated search and rescue system includes a flight power module, a navigation power module, a plurality of biomimetic unmanned boats, a drone, and an integrated control module. The integrated control module is configured to acquire weather information and determine whether to send a flight signal to the flight power module or to send a navigation signal to the navigation power module based on the weather information; the flight power module is configured to fly the drone to a search and rescue region after receiving the flight signal; the navigation power module is configured to navigate the drone to the search and rescue region after receiving the navigation signal; the integrated control module is further configured to control the drone to deploy the plurality of biomimetic unmanned boats; and the plurality of biomimetic unmanned boats are configured to carry out search and rescue work in the search and rescue region.

To provide a gaming machine that can perform effective presentations. [Solution] The system enables the execution of a prize-winning assistance effect that notifies the order of operations for stopping the reels by displaying multiple navigation number indicators on the display device, and a CZ special symbol effect that displays multiple special symbols on the display device. When both navigation number indicators and special symbols are displayed, in the left and right areas of the display area of ​​the display device, the navigation number indicators and special symbols are displayed so that they fit within the area, and in the middle area, the navigation number indicators and special symbols are displayed at different positions on the center line of the width of the middle reel, and are displayed so that they fit within the area.

According to the multi-camera-based aircraft terminal area navigation parameter calculation method, an aircraft is provided with a plurality of cameras and a controller, the cameras operate a binocular camera system, the controller comprises an image processing module, and the method comprises the following steps: acquiring a video image containing a target runway in a terminal area in real time through the cameras; the video image is identified and processed through an image processing module to identify parameters of the target runway, and the parameters comprise four end points of the target runway; the image processing module is used for calculating distances between the aircraft and four end points of the target runway through a binocular vision algorithm, and calculating visual navigation parameters of the aircraft relative to the target runway through a three-point positioning algorithm; the aircraft is guided to land or land on the target runway according to the distance and the visual navigation parameters, the dependence on airport facilities is reduced, and the application range of the automatic take-off and landing function of the aircraft is expanded.

The application provides a ship ice area navigation early warning method, device and electronic equipment, the method comprises the following steps: obtaining ship data, first ice condition data and second ice condition data, wherein the first ice condition data is obtained by satellite remote sensing technology, the second ice condition data is obtained by infrared and radar equipment in real time, then the ship navigation risk level is determined based on the ship data and the second ice condition data, the ship navigation risk level comprises a first level, a second level and a third level, when the ship navigation risk level is the first level, a normal navigation early warning is sent, when the ship navigation risk level is the second level, a maximum speed limit early warning is sent based on the ship data and the second ice condition data, when the ship navigation risk level is the third level, a path change early warning is sent based on the ship data, the first ice condition data and the second ice condition data; the satellite remote sensing technology, the infrared camera and the radar are combined, and real-time detection and early warning of complex conditions around the ship are realized.

The invention discloses a grid star map identification method and system based on weighted voting and geometric verification, and the method specifically comprises the steps: firstly, constructing a feature mode database containing all-day navigation stars, and storing the rasterized geometric mode of an adjacent star sky region of each navigation star and the inverse document frequency (IDF) weight of each grid unit in the database; secondly, extracting a plurality of brightest observation stars as main stars from an observation star map obtained by a star map sensor, and generating an observation geometric mode for each main star; inquiring an offline database by utilizing an observation mode, generating a candidate navigation star list, dynamically filtering low-credibility candidate stars through an adaptive threshold strategy, and sorting the candidate stars by adopting a mixed scoring function; and finally, carrying out pose consistency check on the plurality of candidate stars with the highest scores through a geometric verification method, and identifying the most reliable matching result. On the premise of ensuring the real-time performance, the grid star map recognition robustness and accuracy under various noises and interferences are improved.

The invention discloses a regional navigation communication method and system based on multi-user frequency hopping. The system comprises air users divided into a plurality of sub-networks; and a plurality of ground base stations. According to the system, time-frequency domain resources are divided into a plurality of non-interfering network layers according to different frequency hopping patterns, and different members are divided in each sub-network by using a code division multiple access technology, so that hybrid multiple access is realized, while the signal measurement precision is guaranteed, certain concealment is realized, and the measurement accuracy is improved. And a regional navigation signal waveform system supporting anti-interference and low interception is formed.

A method for enhancing lunar regional navigation based on a libration point navigation constellation, belonging to the field of navigation technology. The navigation constellation in the present invention is composed of different numbers of libration point navigation satellites, and some or all of the orbits near the L1, L2, L4, and L5 libration points are selected as the orbits for the navigation constellation to operate. Different numbers of lunar surface base stations are added to this navigation constellation to jointly improve the observation geometry of the constellation with the libration point satellites, enhance the ranging signal, improve the autonomous orbit determination accuracy of the entire navigation constellation, and solve the problem of insufficient positioning accuracy of the lunar surface base station in the Earth-Moon rendezvous coordinate system. Its main purpose is to provide a high-precision navigation function for the lunar region. The present invention aims to be able to provide lunar surface base stations with high-precision positioning and achieve high-precision lunar regional navigation based on the lunar surface base stations, providing a new type of navigation service for functions such as resource exploitation of moving objects on the lunar surface and lunar surface patrol in the future.

1. Name of the design product: Multi-dimensional computing aesthetic graphical user interface for electronic devices. 2. Purpose of this design product: This design product is used for an electronic device. 3. The key design point of this design product lies in the interface changes of the graphical user interface. 4. The picture or photo that best illustrates the key points of the design: main view. 5. Purpose of Graphical User Interface: To provide software for image classification, retrieval and aesthetic scoring. The main view is a graphical interface that displays the photo album system, providing data information display of each module function. The main view interface is divided into three areas: header area, navigation area, and work area. The header area is the "Home, About Us, Services, Contact Us" menu bar at the top of the interface, and the navigation area provides "Home, Recommendations, Favorites, Timeline, My Album, Scenes, People, Places, Documents, Pets" function selections. There is a search box at the top of the work area. After clicking on the functional modules in the header area or the navigation area, the corresponding data information will be displayed in the interface below the search box in the work area. Click the timeline button in the main view navigation area, and the work area will display photos according to the storage time. Click the search box in the work area to enter the interface change state Figure 1, where you can enter different custom tags to retrieve related images and display them in the work area. Click on an image in the interface change state diagram 1 to enter the interface change state diagram 2, which displays the information of this image: at the top of the working area, the file name of the image is displayed on the far left, and a function button to return to the previous level is provided on the far right; in the interface below the top, the image is displayed in the left two-thirds of the area, and the right one-third of the area is divided into upper and lower parts; the upper right corner displays the image's "file name, location, file size, dimensions, shooting date, and label" from top to bottom, among which the label provides the function of deleting labels and customizing new labels; the lower right corner displays a "color, lighting, and composition" radar chart that uses the AI ​​aesthetic algorithm to perform AI scoring on the image.

According to the public interaction terminal for target area navigation, the guidance method, the medium, the program product and the electronic terminal provided by the invention, the route, the state prompt and the recommendation information are synchronously output through the same digital human image, so that the sense of information dispersion is reduced; information is screened in real time according to the target position of the user and the scene, irrelevant advertisement interference is avoided, and user acceptability is improved; according to the method, only temporary session data is stored and cleaned regularly, personal identities are not stored, user privacy is protected, and compliance interaction is realized. When the user inquires the destination, navigation information of step-by-step path guidance is provided for the user, the personalized recommendation content related to the target position is automatically generated according to the target position and the current scene state of the user, and the user experience is improved through the anthropomorphic digital image. Comprehensive guide information of way directing, reminding and recommending is output to the user in the form of voice broadcast and visual presentation.

1. The name of the design product: navigation bar of office collaboration graphical user interface of electronic device. 2. The use of the design product: an electronic device. 3. The design points of the design product: the graphical user interface, the solid line part is the design point of the present application, and the dotted line part is the conventional design. 4. The picture or photo that best shows the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. The use of the graphical user interface: the interface of the design product is the interface of the office collaboration function of the application software. The part claimed in the present design is the navigation bar part of the office collaboration graphical user interface. The design 1 front view is the display interface of the navigation bar, and the right side of the navigation bar is the page display area; the upper part of the navigation bar is the entry button of the application resident function, and the lower part of the navigation bar is the entry button of the temporarily opened page, and the user can click the entry button in the lower part of the navigation bar to switch the temporarily opened page according to the demand; the display content in the page display area is determined according to the selected page content according to the operation of the navigation bar. The interaction mode of designs 2 to 4 is the same as that of design 1. The "X" in each interface represents one or more of characters, numbers, letters and symbols. The number of "X" in each interface does not constitute a limitation on the number of characters, numbers, letters or symbols represented. The blank area in the circular or rectangular icon in each interface is the content display area.

The invention discloses unmanned aerial vehicle load cabin equipment and an operation method, and belongs to the technical field of satellite navigation / area navigation positioning. A data recorder, a wireless transmission module, a reference receiver and a lithium battery are mounted in a carrying box; a wireless transmission antenna and a reference receiver antenna are arranged on the carrying box; the output end of the wireless transmission module is connected with the wireless transmission antenna; the reference receiver is connected with the reference receiver antenna; the data recorder is respectively connected with the reference receiver and the wireless transmission module, and the wireless transmission module is connected with the wireless transmission antenna; the front end of the carrying box is provided with a supporting rod, the front end of the supporting rod is connected with a to-be-tested tool installation shell, a to-be-tested receiver is installed in the to-be-tested tool installation shell, and the to-be-tested receiver is connected with a to-be-tested antenna. The system can store and return test data in real time, has a high-precision reference track, is suitable for to-be-tested equipment of various sizes, is flexible in data transmission mode, and meets the high-efficiency and accurate test requirements of products such as a positioning receiver in a high-altitude and high-dynamic working environment.

The application belongs to the technical field of ship-bridge active collision avoidance early warning, and discloses a ship-bridge active collision avoidance early warning method based on space-time trajectory prediction and anomaly detection. The application designs an enhanced auto-encoder structure containing a space encoder and a dynamic behavior encoder, which can effectively extract potential feature expressions of trajectories. In combination with a dynamic time warping (DTW) distance and a time series clustering algorithm, unsupervised detection and classification of abnormal trajectories are realized. In addition, a high-risk abnormal trajectory dataset in a real bridge area navigation scene is constructed based on an NT-PRO5000 full-task ship maneuvering simulator, further enhancing the generalization ability and early warning practicality of the model. Experimental results show that the proposed method has high accuracy and stability in trajectory prediction and anomaly detection tasks, and can realize real-time identification and active early warning of ship-bridge collision risks, providing effective technical support for intelligent navigation and risk management of inland waterway ships.

The invention relates to the technical field of data processing, and discloses a multi-source fusion sea ice concentration acquisition method and device, equipment and a medium. The method comprises the following steps: acquiring a shipborne radar image and underway observation data; carrying out OCR identification and preprocessing on the radar image; performing axis analysis and polynomial fitting on the grey-scale map, and eliminating blind areas; sea ice distribution is obtained through adaptive threshold segmentation; processing underway observation data by using a deep convolutional network to fill a blind area; and the radar observation data and the underway observation data are fused according to the area proportion to obtain the fused sea ice concentration. According to the method, scanning and underway observation data of the ship-borne ice area navigation radar can be fused, the limitation of a single data source is overcome, and more accurate, stable and full-coverage sea ice concentration is extracted.

The utility model relates to an in-field instant navigation device, and relates to the field navigation equipment field, the in-field instant navigation device comprises a shell and a fixed base, the shell is internally provided with a navigation assembly used for positioning, one side of the shell is provided with a mounting block, the mounting block is detachably connected with the fixed base, the fixed base is provided with a sliding groove, and the two sides of the mounting block are slidably connected with the interior of the sliding groove; a movable rod is arranged on the wall of the sliding groove, a groove is formed in the middle of the movable rod, the inner wall of the sliding groove and the outer side of the fixed base, a clamping assembly used for clamping the upper end of the movable rod is arranged in the groove, a limiting rod is arranged on the upper side of the movable rod and extends towards the upper side of the mounting block, and when the mounting block is located in the fixed base, the limiting rod is located on the upper side of the mounting block. The navigation device has the advantages that the placement stability of the navigation device is improved, and a user can take and place the navigation device conveniently.

The utility model discloses a kind of ice prevention devices on full-rotation rudder propeller of ice area navigation ship, belong to ship propeller technical field, including box, the box is provided with rudder column, the rudder column is connected with ship body;Icebreaking cone, the icebreaking cone quantity is multiple and evenly distributed in the front end of the box, to carry out icebreaking treatment;Hub, the hub is located in the front end of the box, a plurality of blades are provided on the hub, to push ship body;Guide piece, the guide piece is connected with the box by a plurality of reinforcing ribs, the guide piece is located between the icebreaking cone and the hub, the guide piece is horn shape structure body.The utility model does not need to use net-shaped protective structure to protect blade, adopts icebreaking cone, reinforcing rib and guide piece to be arranged in echelon in navigation direction, and additionally add icebreaking ice knife, effectively avoid the phenomenon of ice jam, realize the function of icebreaking, ice separation and lateral protection.

The invention provides a wide-area navigation path planning system based on passenger behaviors. According to the system, at least one positioning base station is deployed in a station place, and each positioning base station broadcasts at least one positioning signal containing base station identification information in real time; after the mobile terminal enters the signal range according to the out-station navigation path, the mobile terminal moves according to an in-station navigation path, and the in-station navigation path is obtained through pre-planning by matching travel information and a regional map based on a path planning strategy indicated by a passenger; positioning signals are received in real time in the moving process, base station identification information and direction intensity information are analyzed, and real-time position calculation information is generated and uploaded to the service terminal; the service terminal calculates the in-station real-time position based on the base station position information and the calculation information, and returns to the mobile terminal to update the current position in the regional map, so that seamless connection and accurate positioning of navigation inside and outside the station are realized; the problem that in-station positioning precision is insufficient due to unstable signals possibly existing in a complex station environment can be solved. And the positioning and navigation precision is improved.