24 results about "Direct flight" patented technology

The invention discloses a laser radar ranging system based on direct flight time, and the system comprises a laser transmitting module which is used for transmitting a laser pulse signal; the laser receiving module is used for receiving echoes reflected by the target; the data processing module is connected with the output end of the laser receiving module and is used for processing the laser pulse signal and calculating a time difference according to the laser pulse signal; the time sequence control module is connected with the laser emission module and is used for recording a first timestamp of laser pulse signal emission; the recording module is connected with the laser receiving module and is used for starting the laser receiving module and recording a second timestamp for receiving echoes when the first timestamp is recorded; the time calibration module is connected with the data processing module and is used for providing a time calibration signal for the data processing module; and the distance measuring module is used for measuring and calculating the distance according to the time difference. According to the invention, the laser radar ranging of the target can be realized by using the direct time-of-flight method.

The invention provides a route multiplexing method, a flight control method and device, electronic equipment and a medium, and relates to the field of unmanned aerial vehicles. The method comprises the following steps: firstly, searching each historical route in a surrounding preset range by taking the current position of the unmanned aerial vehicle as a center, and then determining a reusable route segment in each historical route; screening a plurality of effective multiplexing legs from all the multiplexing legs; and finally, selecting at least one recommended multiplexing leg from all the effective multiplexing legs. The multiplexing flight efficiency can reflect the flight distance difference between the multiplexing reusable leg and the direct flight in the process of flying the unmanned aerial vehicle from the current position to the target position, so that a user can flexibly select the target multiplexing leg multiplexed in the process of flying from the current position to the target position from the final recommended multiplexing leg; in this way, a complete flight route from the current position of the unmanned aerial vehicle to the target position does not need to be re-planned, and the recommended multiplexing leg which can be multiplexed is flexibly found out, so that part of route planning work is avoided.

The invention discloses a direct flight time distance measurement method and device, N groups of detection pulses are emitted, each group comprises at least two emission pulses, the intra-group pulse movement time is the same, and the inter-group pulse movement time is the same or different; converting the light receiving time of the reflected return light into a digital value and generating a histogram; searching a histogram peak value position, calculating a peak value interval, and finding out a peak value interval closest to a preset transmission pulse interval; if only one peak interval exists, the histograms corresponding to other peaks are accumulated to the first histogram corresponding to the peak interval, and the distance is obtained according to the peaks of the accumulated histograms; and if a plurality of peak intervals exist, accumulating the histograms with the later time in each group of peak intervals into the histograms with the earlier time, comparing the peak values of the plurality of groups of accumulated histograms, and obtaining the distance according to the maximum histogram peak value. According to the invention, the anti-interference capability of the distance measuring device is effectively improved, especially the capability of resisting the interference of similar equipment is improved, and the distance measuring precision can be improved.

The invention discloses a fixed airport unmanned aerial vehicle route planning method and system, and the method greatly reduces the workload of manual collection and verification through the intelligent route planning and the initial route design driven by three-dimensional point cloud data. In the aspect of safety, based on accurate three-dimensional point cloud data and a scientific algorithm, the unmanned aerial vehicle can accurately avoid obstacles and dangerous areas in a transformer substation, for example, when a channel route is planned, a flight path is set strictly according to coordinates of a safety point above a tower head, and collision with a tower and accessory equipment is effectively prevented; in the aspect of inspection efficiency, ordered route planning of conventional inspection and a direct flight target strategy of special inspection are combined, so that the unmanned aerial vehicle can quickly and comprehensively cover an inspection area, invalid path flight and key part omission are avoided, qualitative leap in safety and efficiency is realized compared with the traditional technology, and the unmanned aerial vehicle has a wide application prospect. And the efficient and stable development of the electric power inspection work is powerfully ensured.

The application discloses a flight management system for direct flight of a transport plane, and comprises a direct flight path construction module; when the direct flight path construction module constructs a interception path according to a direct flight section, the interception path is divided into an arc section and a straight line section to a direct flight target point, and the turning radius is calculated in combination with the ground speed and the maximum turning slope in the arc section. The application improves the turning efficiency and intuitively presents the turning transition path in front of the crew. In addition, the application provides three direct flight managements, i.e., a basic direct flight, an Abeam direct flight and a CRS-IN direct flight, so as to meet the diversified direct flight demands of the crew.

The invention relates to a direct flight time ranging method and system for structured light illumination, and belongs to the technical field of industrial automation, and the method comprises the steps: projecting a structured pulse laser illumination field to a target scene; the structured pulse laser illumination field forms a space pattern with a light and shade alternating contrast characteristic in the space; the spatial pattern at least comprises a high-brightness active illumination area and at least one low-brightness or non-illumination background reference area; identifying and separating a background light signal from a background reference area from light signals based on the distribution of the light signals of the active lighting area and the background reference area in the space pattern by projecting a structured pulse laser lighting field; according to the invention, the background noise component is estimated based on the background light signal, and the noise contribution related to the background noise component is removed from the light signal reflected by the target object in the target scene to obtain the effective signal after background suppression, so that the effective noise removal and the accurate detection of the effective signal are facilitated, and the distance measurement accuracy is improved.

The application discloses a kind of direct flight automatic identification method based on QAR data, the present application is different by latitude and longitude, altitude track deviation distance man-machine interaction information in flight phase establishes t-SNE model perplexity, track deviation distance automatic identification algorithm is established in flight phase by t-SNE model perplexity, to utilize flight phase track deviation distance automatic identification algorithm to the position coordinate man-machine interaction information in flight phase is automatically identified, obtains the track deviation distance calibration time in safety limit interval data under the automatic driving state of flight phase, and the correction scheme of heading, flight speed, flight attitude is set by attitude stability judgment information, and aircraft safety control is carried out based on the correction scheme of heading, flight speed, flight attitude.The application improves the automatic identification precision of flight phase track deviation distance automatic identification.The method can efficiently process a large amount of flight data, improve the intelligent level of flight management, and reduce the operation complexity.

The invention provides an active air refueling route planning method, and belongs to the field of aircraft flight control, and the method comprises the steps: a refueling machine sets a predicted meeting point on a fixed route of a receiver aircraft, and the meeting point is solved in a manner that the refueling machine flies to the predicted meeting point in a Dubins shortest path to be combined with the receiver aircraft; judging whether the solved meeting point is on a specified straight line section of the horse race, if so, enabling the refueling machine to fly according to a Dubins path navigation point, and if not, moving the meeting point to a starting point of the specified straight line section, and obtaining a circling route after the refueling machine reaches the meeting point; and calculating a straight flight path after the refueling machine and the oil receiver are combined until refueling is completed and the refueling machine is separated from the oil receiver. According to the invention, the unmanned aerial vehicle which flies according to a fixed air route and has a relatively low intelligent level can be ensured to realize an active aerial refueling task of the refueling machine on the unmanned aerial vehicle, and meanwhile, a refueling meeting point is set on a specified edge of an air route of the refueling aircraft, so that the safety and reliability of aerial refueling are improved.

The present invention discloses a restricted airspace unit identification method based on the DBSCAN clustering algorithm. The method first defines the airspace unit; secondly, collects the actual flight operation data and the corresponding route information, matches the route information with the latitude and longitude coordinate data of the airspace unit to construct a route network model; then, calculates the flight delay data, downsamples the data, and associates it with the airspace unit to obtain the flight delay feature data; finally, combines the route network model with the flight delay characteristics, and constructs an identification model for the restricted airspace unit based on the DBSCAN clustering algorithm. The method of the present invention can identify restricted airspace units and restricted start and end times, which helps to solve the randomness caused by events such as bad weather and air traffic control. Determining the start and end time of the airspace restriction can separate the direct flight delays from the delays caused by propagation, and further explore the propagation mechanism of flight delays, which is of great significance to improving the accuracy of flight delay prediction.

Disclosed in the present application are a method, apparatus and device for acquiring interline flight information, and a readable storage medium, which are applied in the field of data processing. The method comprises: acquiring flight information update items of a target direct flight; acquiring, from a pre-constructed interline flight information base, target interline flight information related to target update information; updating the target interline flight information on the basis of the target update information, so as to obtain an update result of the target interline flight information; and updating the interline flight information base. Thus, when flight information of a direct flight or an interline rule is updated, on the basis of the flight information update items of the target direct flight, interline flight information, which is related to the update items, in the interline flight information base is updated, such that the interline flight information base is updated. Therefore, when interline flight information is acquired from the interline flight information base, the accuracy and richness of the interline flight information are ensured, and the response time for the acquisition of the interline flight information is also shortened.

The application provides a kind of based on path planning algorithm's through flight information updating method and device, the method includes: through flight rule management step;Direct flight management step: responsible for the management work of direct flight, notify the real-time updating step of through flight to update associated through flight information;Through flight refresh trigger step: receive the change information in through flight rule management step and direct flight management step, notify the real-time updating step of through flight to carry out accurate calculation and refresh through flight information;Through flight real-time updating step: carry out the calculation generation of through flight information, and update through flight information;Through flight data cluster step: store path rule data and the calculation generation of through flight information result data.The application triggers through flight information refresh using fine-grained path rule, reduces the workload of through flight calculation, improves the efficiency of through flight information refresh.

The embodiment of the utility model provides an aircraft. The aircraft comprises an aircraft body, a visual sensor and a direct flight time sensor, the visual sensor and the direct flight time sensor are connected to the aircraft body, and the detection range of the visual sensor and the detection range of the direct flight time sensor are at least partially overlapped in at least one direction of the aircraft. The visual sensor is used for detecting obstacles in the at least one direction, and the direct time-of-flight sensor is at least used for detecting obstacles in the at least one direction. According to the aircraft, the problem that in the prior art, part of obstacle avoidance scenes are limited due to the fact that obstacle detection is conducted only through the visual sensor can be solved to a certain extent, obstacle detection under more scenes is achieved, and the application scene of the aircraft obstacle avoidance technology is expanded.

This application discloses a three-dimensional route network planning method for low-altitude unmanned aerial vehicles (UAVs), relating to the field of UAV route planning technology. The method includes: acquiring initial data for UAV route planning; extracting the BeiDou grid code corresponding to the initial data for spatial mapping to obtain a gridded distribution of the initial data, wherein the initial data includes UAV flight requirements; dividing the UAV flight requirement grid into a preset number of clusters using a preset clustering algorithm, with the center point of each cluster as a core requirement point; generating direct flight routes connecting all core requirement points using a preset planning algorithm; optimizing the direct flight routes using a preset optimization algorithm to obtain optimized direct flight routes; converting the optimized direct flight routes into a maximum flow tree; obtaining a basic UAV route network based on the maximum flow tree; and expanding the grid channels to obtain a three-dimensional route network. This method enables efficient UAV route network planning.

The present disclosure relates to the technical field of voyage planning, and provides an aircraft flight interlining planning method, system, device and medium. The method comprises constructing a flight information graph using flight information of multiple cities. The flight information of each city a in the flight information graph comprises: city a, coordinates of city a, city b having a direct flight with city a, and average duration of a flight directly from city a to city b. Based on the information in the flight information graph, a heuristic function, a loss function and an expected loss function of an A* path planning algorithm are constructed, and path planning is performed using the A* path planning algorithm to output a planned path from a starting node to a target node. Based on the planned path, flights are matched to obtain a matching result and output. The present application can make full use of data in the flight schedule to make the planned flight interlining more scientific.

This invention discloses a multi-UAV inspection route planning method that considers wind impact and heterogeneous takeoffs and landings. The method comprises the following steps: obtaining geographic information data, the weight of the inspection UAVs, the battery energy data of the inspection UAVs, and wind direction and speed forecast data for the inspection period; setting the horizontal airspeed and the ascent and descent flight speeds of the UAVs during the inspection; establishing an estimation matrix for the UAVs' direct flight energy consumption under wind impact; and solving a three-stage model for multi-UAV inspection route planning that considers wind impact and heterogeneous takeoffs and landings. This method models and measures the impact of wind on UAV flight energy consumption, taking into account the heterogeneous takeoff and landing patterns of UAVs. This method can fully utilize the advantages of multi-UAV applications in forest inspections, reduce forest fire prevention inspection costs, and minimize human and material resource consumption.

The invention discloses a method and a system for judging direct flight based on flight trajectory data. The method comprises the following steps: acquiring a plurality of route points of a flight, planned route data and corresponding actual trajectory data; calculating two groups of edge lines matched with the planned route data based on the planned route data and the plurality of route points; determining a plurality of intersecting track points of the actual track and the edge lines based on the actual track data and the two groups of edge lines; calculating an actual flight distance of adjacent track points and a planned mapping distance of the adjacent track points based on the actual track data, the plurality of route points and the planned route data; and according to the actual flight distance and the planned mapping distance, determining the flight state of the corresponding waypoint in the range of the adjacent track points. According to the method and the system, whether the flight executes direct flight or not can be accurately judged by utilizing the flight trajectory data, the accuracy and the real-time performance of judgment are improved, and optimization of air traffic management and improvement of flight operation efficiency are facilitated.

The invention relates to the technical field of flight planning, and provides an aircraft flight intercourse planning method, system and device and a medium, the method comprises the steps that flight information of multiple cities is utilized to construct a flight information graph, and flight information of each city a in the flight information graph comprises the city a, coordinates of the city a and a city b with direct flights between the city a and the city b; the average duration of the flights from the city a to the city b; constructing a heuristic function, a loss function and an expected loss function of an A * path planning algorithm based on information in the flight information graph, performing path planning by using the A * path planning algorithm, and outputting a planned path from the starting node to the target node; based on the planned path, flight matching is carried out, and a matching result is obtained and output. According to the method, the data in the flight timetable can be fully utilized, so that the planned flight intercourse is more scientific.

The invention discloses a linked flight query method and device, a storage medium and electronic equipment, and relates to the technical field of information query. The method comprises the following steps: acquiring N interlink rules issued by a plurality of target mechanisms, and fusing the N interlink rules to obtain M interlink rules; multiple pieces of direct flight information are obtained, and according to the multiple pieces of direct flight information and the M interlink rules, multiple pieces of interlink flight information are obtained through calculation; receiving a query request sent by a target object; and based on the query request, querying a target intercourse flight from the multiple pieces of intercourse flight information, and returning the queried target intercourse flight to the target object. Through application of the method and the device, the problems that a large number of redundant interconnecting rules exist in related technologies, so that the efficiency of calculating interconnecting flights by utilizing the interconnecting rules is relatively low, and the response time of inquiring the interconnecting flights by passengers is relatively long are solved.

The application provides an aircraft, an obstacle avoidance control method, device and system for the aircraft. The aircraft comprises a body, a visual sensor and a direct flight time sensor connected to the body. The detection ranges of the visual sensor and the direct flight time sensor at least partially overlap in at least one direction of the aircraft. The visual sensor is configured to detect an obstacle in the at least one direction when a first preset condition is met. The direct flight time sensor is configured to detect an obstacle in the at least one direction at least in a case where the first preset condition is not met. The first preset condition is related to a condition under which the visual sensor can detect an obstacle.

The application relates to a method for analyzing track angle monitoring service parameter errors of non-direct flight tracks, wherein track angle data of specific tracks with extremely small data amounts are subjected to regression, distribution fitting and other analysis and calculation, in the regression stage, the obtained prediction value is taken as the actual track angle value of the track, the original data is taken as the observation value, and the difference between the actual value and the observation value is calculated; in the distribution fitting stage, the regression result is subjected to track angle error distribution fitting analysis, the mean value of the track angle error is taken as the track angle error of the track section, and thus the track angle monitoring service parameter error is obtained. In the case that the track angle data amount is extremely small, the accuracy of the calculation result is improved.

The invention discloses a distribution network fault finding route generation method, which comprises the following steps of: automatically generating a distribution network tower routing inspection route by using coordinates and elevation data of a distribution network tower and combining a relative position relationship between a distribution network refined routing inspection point location and a tower top, and automatically finding a distribution network fault finding route according to topological data of a distribution network line. And connecting the tower inspection route along a main line-branch line-branch line relation to form a final distribution network line inspection route. In addition, the invention also provides a distribution network autonomous inspection safety route combination method. Firstly, a plurality of safe take-off towers are added to a distribution network line, a direct flight channel between the safe take-off towers and an unmanned aerial vehicle airport is guaranteed, and the safe take-off towers are relatively safe at the set height. And then, when a line inspection route is executed, entering the upper part of the distribution network line through the safety tower, searching the shortest line from the safety tower to the starting point of the fault section according to a line topological relation, and splicing according to coordinates of the towers on the way to form a safe takeoff route for fault searching.

Provided are a method and apparatus for constructing a through flight, an electronic device and a storage medium. In the method for constructing a through flight, through flight information issued by each airline is acquired, where the through flight information includes a through flight route information and a through flight code sharing relation. Then, data of the through flight information is verified to obtain valid through flight information. Then, direct flight information is searched out from a pre-constructed direct flight information base based on the valid through flight information. Finally, the through flight is constructed based on the direct flight information, and stored into a through flight information base. Thus, according to the method of the disclosure, the direct flight information can be searched out according to the acquired through flight information issued by each airline, thereby constructing the through flight. The through flight can improve accessibility between existing airports, give full play to a radiation effect of a hub airport, and achieve a service mode of "trunk and branch communication and full network connection".

The present invention provides an airport cluster network connectivity analysis method and system based on relative entropy theory. The method includes constructing an airport cluster network topology model; calculating the node degree and node flow intensity of each node; calculating the route connection intensity and passenger demand intensity between airport networks based on the node degree and node flow intensity of each node, the route opening status between airports, flight frequency data, and route passenger volume data; calculating the route direct flight rate and passenger direct flight rate based on the route connection intensity and airport network passenger demand intensity; constructing the route direct flight connectivity impact measurement index (ACI) based on the relative entropy value and the route direct flight rate; constructing the passenger direct flight connectivity impact measurement index (PCI) based on the relative entropy value and the passenger direct flight rate; and constructing the airport cluster network connectivity index (NCI) based on the ACI and PCI to comprehensively evaluate the network connectivity of the airport cluster. The present invention improves the accuracy and effectiveness of airport cluster network connectivity analysis.

This invention relates to the field of urban low-altitude airspace planning technology, and particularly to a method for constructing a hierarchical planning model for urban low-altitude airspace oriented towards traffic demand. The method for constructing this hierarchical planning model plans each low-altitude altitude layer corresponding to a specific heading angle range. Multiple low-altitude altitude layers can exist within the same heading angle range. The model construction method includes the following steps: First, acquiring aircraft operational demand data between low-altitude take-off and landing points within the study area, and standardizing the angles of direct flight routes between take-off and landing points; second, proposing a method to calculate the average probability of conflict between aircraft within the same layer of traffic flow and between adjacent layers of traffic flow based on the heading extension range; finally, providing an overall method for constructing a hierarchical planning model for urban low-altitude airspace oriented towards traffic demand. By using altitude layering to reduce low-altitude traffic flow operational conflicts, the proposed model considers both the total number of available low-altitude altitude layers and the control of airspace structural complexity while reducing traffic conflicts, thereby effectively improving the safety and manageability of urban low-altitude hierarchical airspace operation.