27 results about "Navigational database" patented technology

The invention discloses a roadbed compaction degree monitoring method and system based on airborne laser radar, and belongs to the technical field of roadbed compaction degree intelligent monitoring, the monitoring method comprises the following steps: using an unmanned aerial vehicle to collect roadbed data, and constructing a historical database and a navigation database; according to the timestamps of the data in the historical database and the navigation database, all the timestamps in the two databases are combined and subjected to duplicate removal, and a complete time axis is constructed; according to the three-dimensional point cloud data subjected to navigation deviation parameter correction, relevant parameters of the roadbed compactness are obtained through calculation, and a relevant parameter database is constructed; fitting the relevant parameter data in the relevant parameter database and the three-dimensional point cloud data in the historical database to obtain a roadbed compactness characterization parameter model; and finally, combined with two-dimensional image data in a historical database, generating change images of the roadbed compactness in different time periods. According to the invention, intelligent monitoring of the roadbed compactness can be effectively realized.

The present invention discloses a roadbed compaction monitoring method and system based on airborne laser radar, belonging to the technical field of intelligent monitoring of roadbed compaction. The monitoring method includes using a drone to collect roadbed data, and constructing a historical database and a navigation database; according to the timestamps of the data in the historical database and the navigation database, all timestamps in the two databases are merged, duplicated, and constructed to obtain a complete time axis; according to the three-dimensional point cloud data corrected by the navigation deviation parameters, the roadbed compaction related parameters are calculated, and a related parameter database is constructed; the related parameter data in the related parameter database and the three-dimensional point cloud data in the historical database are fitted to obtain a roadbed compaction characterization parameter model; finally, combined with the two-dimensional image data in the historical database, the roadbed compaction change image under different time periods is generated. The present invention can effectively realize the intelligent monitoring of roadbed compaction.

The invention discloses a flight management equipment route intelligent generation method, and belongs to the technical field of flight control, and the method comprises the following steps: 1, a basic route is generated through flight management equipment, and the basis conditions for generating the basic route at least comprise a takeoff airport, a landing airport, a flight direction, a civil aviation route and a navigation database; step 2, optimizing the basic route by using a deep learning network model: obtaining meteorological information and air traffic control information corresponding to the basic route according to historical route generation experience and correlation learning rules in combination with a network, optimizing and adjusting the route, and generating a flight route meeting safety requirements; and 3, completing three-dimensional route three-dimensional obstacle avoidance by using global high-precision terrain elevation data. According to the invention, the efficiency and accuracy of route input and the efficiency and safety of flight management are improved.

The invention discloses a navigation database coding-based chart program ideal track generation method, which comprises the following steps of: coding a flight program according to a flight path suspension code, converting a corresponding program into a series of flight segments in a navigation database according to a chart and a coding table, and generating a navigation database; a program in a navigation database is called to connect a series of flight segments in series for resolving, so that a complete flight plan is obtained; wherein the flight path suspension code is used for indicating a flight path ending code in a flight program and is used for indicating an action which should be taken after a specific flight segment is completed; the flight path can be obtained through analysis and simulation, and then the flight program is optimized.

A flight analytics system may receive, from a flight recorder of an aircraft, flight data corresponding to one or more routes flown by the aircraft. The flight analytics system may obtain, based on a downlink message sent by the aircraft in-flight, version information of a first navigation database (NavDB) used in-flight by a flight management system of the aircraft while flying the one or more routes. The flight analytics system may determine, based on the version information of the first NavDB, a second NavDB that matches the first NavDB. The flight analytics system may perform, using the second NavDB, flight data analysis on the flight data. The flight analytics system may output, based on the flight data analysis, flight analytics data for the one or more routes flown by the aircraft.

The embodiment of the invention relates to the technical field of flight management, and provides a flight plan management method and device for a flight management system, and the method comprises the steps: analyzing a navigation database file of a target protocol, and writing the analyzed navigation data into a target database, the navigation data including airports, waypoints, routes and flight program data; a flight plan creating instruction input by a target user is received through CDU simulation unit software, and the flight plan creating instruction at least comprises a takeoff airport, a target airport and waypoint numbers or route names; based on the flight plan creation instruction, extracting target data from a target database, and generating a flight plan; receiving and responding to an activation instruction input by the target user, and activating the flight plan; and controlling the target flight trainer to execute the activated flight plan based on the activated flight plan. The creation, editing, activation and dynamic over-point calculation of the flight plan can be completely reproduced in the trainer through simulation software, and the cost is reduced.

The embodiment of the invention relates to the technical field of flight management, and provides a flight plan waypoint management method and device for a flight management system, and the method comprises the steps: obtaining and analyzing a navigation database file which accords with a target protocol, writing the analyzed navigation data into a target database, and creating a waypoint data table set; a waypoint operation instruction triggered by a target user is received, and the waypoint operation instruction is input through pre-constructed CDU simulation unit software; and based on the waypoint operation instruction, querying the waypoint data table set through flight management simulation software, executing waypoint operation processing, and returning an operation processing result to the CDU simulation unit software in real time for picture refreshing. Therefore, the simulation software can completely reproduce the creation, editing and deletion operation control of the flight plan waypoint in the trainer, and the cost is reduced.

The present invention provides a navigation data modeling system based on ARINC424 and a modeling method thereof. The navigation data modeling system comprises navigation data, a navigation database to be updated, a navigation data parsing module, a navigation data navigation database, an ARINC424 data format standard module, a data structured module, a structured navigation data navigation database, a navigation data comparison module, a navigation data verification and updating module, and a navigation data storage module. The navigation data modeling system and the modeling method thereof are constructed based on the ARINC424 structure and the navigation data structure, and a flexible data structure is constructed by comprehensively considering the characteristics of the two data form structures, so that data conversion is smoother, data quality control is easier, the production efficiency of navigation data is improved, and the data conversion quality is improved, and the market prospect is very bright.

This invention discloses a vehicle dispatching method and apparatus. After acquiring the location data of each parking spot in the current city at a first moment, this invention determines target drop-off and target pick-up points among each parking spot based on the location data. It then combines and filters these target drop-off and pick-up points to obtain a first preset number of target drop-off / pick-up pairs. Next, it queries a pre-created navigation database to determine the navigation data for each target drop-off / pick-up pair, and finally generates a vehicle dispatching task based on the navigation data of each target drop-off / pick-up pair. The navigation database stores navigation data for multiple estimated drop-off / pick-up pairs. These estimated drop-off / pick-up pairs are those estimated to have vehicle dispatching value at a second moment, earlier than the first moment. Therefore, this invention can reduce the navigation calculation pressure during the vehicle dispatching task generation process, thereby improving the efficiency and stability of vehicle dispatching.

A system and method for enhancing pilot situational awareness stores to an onboard navigational database hybrid approach procedure sets, e.g., approaches to a landing or other waypoint wherein a first portion of the approach is performed or executed according to a first approach procedure set (e.g., to a final approach fix (FAF) or other waypoint), and a second portion of the approach (e.g., once the FAF / waypoint is sequenced) is performed / executed according to a different approach procedure set, e.g., an RNP AR-to-LPV hybrid approach. Flight displays provide textual approach indicators, e.g., when the hybrid approach is loaded and arming of the first segment is upcoming, or when the first and second segments are respectively armed and activated (e.g., when the necessary conditions are satisfied). Hybrid approach indicators may alternatively or additionally be provided via flight mode annunciators (FMA) of the flight display.

The invention discloses a 4D track prediction method based on prior track guidance and multivariable time lag dynamic adjustment, which comprises the following steps: firstly, preprocessing real historical flight data and meteorological data; extracting prior track data of a fixed navigation point from a flight navigation database, and generating prior features; meanwhile, internal source features are extracted from internal source variables of the preprocessed real historical flight data; extracting exogenous features from the exogenous variables of the preprocessed real historical flight data; inputting the priori features and the endogenous features into a priori feature guide cross attention module to generate priori fused endogenous features; inputting the endogenous feature and the exogenous feature of the fusion prior into an exogenous cross attention module to generate a final fusion feature; and the final fusion feature is spliced with the historical track sequence, and a future 4D track prediction result is further generated through linear mapping. According to the method, the accuracy of track prediction is improved through a method of automatically aligning time lags possibly existing between multiple variables.

The invention discloses a full-link intelligent risk control system for building renting, which relates to the technical field of renting management and specifically comprises a housing resource verification module, an intelligent matching module, a communication module, an electronic contract management module, a fund supervision module, a risk monitoring module and a feedback module. The house source verification module is used for verifying house source information uploaded by a user, checking the authenticity of a house source and updating the state of the house source in real time; the house source verification module comprises an image recognition unit which is used for being in butt joint with a map navigation database according to the house source position information, and it is ensured that house source addresses exist truly. According to the full-link intelligent risk control system for building renting, a non-intermediary direct transaction mode is adopted, direct communication between an owner and a tenant is achieved, the information difference between the owner and the tenant is broken, the owner and the tenant can conduct direct transaction, and the probability that internal personnel and an intermediary are linked to conduct improper transaction is reduced.

A landing system for an aircraft and a method of calculating a reference path. The landing system can calculate a reference path for use during a non-precision approach to a runway, the reference path including a course, flight path angle, and anchor point. The anchor point has a longitude, a latitude and an altitude. The landing system is configured to extract from a navigation database a missed approach point corresponding to a first landing threshold point of the runway. The missed approach point has a longitude, a latitude and an altitude. The landing system is configured such that calculation of the reference path includes setting the altitude of the anchor point with use of the altitude of the missed approach point. The system may be used when approaching a runway having a displaced landing threshold point, the location of the point not being stored in the navigation database.

The invention discloses an eVTOL airborne navigation database design method, and belongs to the field of airborne navigation databases. The method comprises the following steps: classifying navigation content data; respectively designing the terminal program data, the route section data, the route data, the route point data and the stop point data, and determining the basic field content of the terminal program data, the route section data, the route data, the route point data and the stop point data; associating the terminal program data file into the route data file; associating the route data file into the route section data file; associating the route segment data file to each underlying data file; performing data sorting and indexing on all the data files; performing standard check on each item of data; and optimizing a storage result. According to the method, the unique requirements of the eVTOL aircraft in the urban environment are met, the eVTOL aircraft can be helped to plan a safe path and avoid obstacles, and flight safety is guaranteed.

One or more embodiments of this specification provide an indoor navigation method, apparatus, device, and medium. The method is applied to client software, which is connected to a navigation database; the navigation database includes a correspondence between indoor targets and location information that are customized and registered by the user; the method includes: obtaining an indoor target selected by the user from among several indoor targets output on an indoor navigation interface, querying the navigation database to obtain target location information corresponding to the indoor target selected by the user; obtaining wireless signals emitted by wireless hotspots deployed indoors and collected in real time by a user terminal, and calculating signal characteristics corresponding to the user's real-time location based on the obtained wireless signals; determining the user's real-time location indoors based on the signal characteristics; calculating a navigation path between the real-time location and the target location information in real time, and outputting the calculated navigation path to the user through the indoor navigation interface to provide indoor navigation for the user.

Systems and methods for defining a custom fix via a graphical user interface (GUI) for operation of an aircraft. The method includes uniquely sized and arranged custom fix dialog GUI windows that are displayed on an active avionic display, the custom fix dialog windows having preprogrammed arrangements of GUI objects. The GUI objects allow a user to select between custom airports or custom runways, and to select between create, edit, and store custom fix functions. The method decodes and sequences user input, as related to the displayed GUI objects. Embodiments keep track of required data fields for respective custom fixes, and store custom fix data in a custom database that is compatible with the navigation database and avionic display systems.

Techniques are disclosed for systems and methods for video based sensor fusion with respect to mobile structures. A mobile structure may include at least one imaging module and multiple navigational sensors and / or receive navigational data from various sources. A navigational database may be generated that includes data from the imaging module, navigational sensors, and / or other sources. Aspects of the navigational database may then be used to generate an integrated model, forecast weather conditions, warn of dangers, identify hard to spot items, and generally aid in the navigation of the mobile structure.

The invention relates to a navigation system (100) for a vehicle and a method for navigating a vehicle.The navigation system (100) comprises a navigation database (101) which includes and provides data on a road network and attribute and context information on locations, objects and their environment in the road network; a system (102) for determining a current vehicle configuration and current environment data, wherein the system (102) is further executed and configured to determine, based on the determined vehicle configuration and the environment data, a purpose for a journey of the vehicle with this vehicle configuration; a unit (103) which is executed and configured to determine, based on the determined purpose of the journey and the data of the navigation database, a destination appropriate to the purpose and a route to the destination; and an output unit (104) which is executed and configured to output the destination and the route as a suggestion.

The present invention discloses a star map recognition method for a multi-field star sensor, comprising the following steps: Step S1, constructing a navigation database, the navigation database comprising a navigation star library for storing basic information of stars, a library for storing star pairs with small angular distances within the field of view, and a library for storing angular distances between fields of view with large angular distances; Step S2, identifying primary stars in multiple fields of view; and Step S3, identifying stars observed in the full field of view. In the present invention, a "one small, two large" model is constructed, and by limiting the selection range of observation stars in the model, the number of models is reduced, thereby reducing the database capacity and improving the recognition speed. Based on attitude solution results, iterative identification of stars observed in the full field of view is carried out, and the accuracy of attitude solution is gradually improved through iteration, thereby improving the recognition rate of stars observed in the full field of view. Only angular distance information is used for recognition, and image fusion between fields of view is not required. The method is not limited by the number of fields of view or the angle between fields of view, and is more suitable for multi-field star sensors with different numbers of fields of view and boresight angles.

This application discloses a method for intelligently generating routes for flight management equipment, belonging to the field of flight control technology, and comprising the following steps: Step 1: Generate a basic route through the flight management equipment, wherein the conditions for generating the basic route include at least the departure airport, landing airport, flight direction, civil aviation route, and navigation database; Step 2: Optimize the basic route using a deep learning network model: Based on historical route generation experience, associated learning rules, and combined with network-acquired weather information and air traffic control information corresponding to the basic route, optimize and adjust the route to generate a flight route that meets safety requirements; Step 3: Use global high-precision terrain elevation data to complete three-dimensional route obstacle avoidance. The present invention improves the efficiency and accuracy of route input, as well as the efficiency and safety of flight management.

The present invention belongs to the technical field of synchronized navigation databases, and more particularly relates to a method for synchronizing navigation databases on a flight simulator based on the ARINC424 protocol. Step 1: A main control computer reads airport data and runway data from the navigation database of the airport to be synchronized, and the main control computer communicates with a visual computer and a flight management computer, respectively, causing the main control computer, the visual computer, and the flight management computer to synchronize their respective data. Step 2: The main computer reads navigation station data and route data from the navigation database of the airport to be synchronized, and the main control computer communicates with the flight management computer, respectively, causing the main computer and the flight management computer to synchronize their respective data. The present invention designs a method for synchronizing the navigation database of an airport among the visual computer, the main control computer, and the flight management computer, enabling pilots to experience an extravehicular scene that is completely consistent with an actual flight during training in a full-flight simulator.

The application provides a star map recognition method based on radial and ring angular distance, and the main steps include selection of a star table and construction of a navigation database, construction of an observation star radial and ring angular distance mode feature, initial matching of a radial mode, further matching of a ring angular distance mode, and link angular distance verification. The method realizes one-to-one identification of star points in a star map with large density and multiple pseudo stars, still maintains a high recognition rate when large noise interference and edge field loss are encountered, and makes the correct rate of star map recognition reach 98.7%, and has strong robustness to pseudo stars and background noise interference.

The application discloses a building safety evaluation method and system based on an aircraft radar guide area, and the method comprises the following steps: obtaining flight radar guide area data from an ARINC424 navigation database; expressing airport geographic basic data to a GIS tool system according to longitude and latitude information, extracting radar guide area expression from the flight radar guide area data to the GIS tool system, and setting an obstacle control parameter corresponding to each radar sector of the radar guide area; collecting building data to be built and expressing the building data to the GIS tool system according to longitude and latitude information, comparing the design height of the building to be built with the height limiting parameter corresponding to the radar sector, and calculating overheight data. Through the standardized, automated, efficient and rapid building evaluation of the automatic evaluation logic rule, the building to be built which is overheight and affects the safety of the radar guide can be quickly and accurately identified, and an overheight warning is given, thereby providing strong technical support for the safety of the airport clearance.

Techniques are disclosed for systems and methods for video based sensor fusion with respect to mobile structures. A mobile structure may include at least one imaging module and multiple navigational sensors and / or receive navigational data from various sources. A navigational database may be generated that includes data from the imaging module, navigational sensors, and / or other sources. Aspects of the navigational database may then be used to generate an integrated model, forecast weather conditions, warn of dangers, identify hard to spot items, and generally aid in the navigation of the mobile structure.

A synthetic radio altimeter system is provided. At least one sensor is used to generate sensor data that is used at least to determine a then current vehicle location. At least one controller is configured to determine an elevation of terrain under a vehicle based on the determined then current location of the vehicle and terrain information in the terrain database. The at least one controller is further configured to determine a height of the vehicle above terrain based at least in part on the determined elevation of terrain under the vehicle and the sensor data. The at least one controller further configured to augment the determined height of the vehicle above terrain with at least in part navigation database information when the vehicle is near one of a travel path origin and a travel path destination. The height above terrain may also be augmented based on a navigation radio.

The invention relates to an aircraft flight key time identification method, device, equipment and program product. The method comprises the following steps: acquiring a unit task book of an aircraft, and extracting an approaching type from the unit task book; determining a runway number for landing of the aircraft, and generating a combination of the runway number and the approach type; searching an approach program identification code matched with the combination in a navigation database, and determining a final approach point matched with the approach program identification code from the navigation database; and acquiring flight data of an aircraft, and determining a target moment when the aircraft passes through the final approach point according to the flight data and the final approach point. By adopting the method, the recognition accuracy of the moment when the aircraft passes through the final approach point can be improved.