384 results about "Flight altitude" patented technology

The invention discloses a method for generating an autonomous inspection orthoimage of an unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicle surveying and mapping and autonomous navigation. Global optimization of an air route is realized through a path optimization strategy fused by a genetic algorithm in combination with grid characteristics of an inspection area and image parameter constraints, and candidate waypoints are used as nodes; redundant waypoints are screened through leg smoothness factors, route complexity is reduced, a genetic algorithm takes flight height and waypoint spacing as constraints, a fitness function containing flight distance, turning times and overlapping rate is constructed, a global optimal path is found through population iteration, multi-target requirements are optimized and balanced, and it is ensured that the route meets the image acquisition precision requirement and also meets the requirement of image acquisition. The flight distance can be shortened, the turning frequency is reduced, the cruising ability of the unmanned aerial vehicle is adapted, efficient propelling of the inspection task is guaranteed, meanwhile, waypoint coordinates output through simulation directly adapt to a flight control system, and it is guaranteed that actual flight parameters are consistent with planning parameters.

The invention provides a low-altitude airspace dynamic decision-making system based on a multi-modal large model, and relates to the technical field of low-altitude airspace traffic management.The low-altitude airspace dynamic decision-making system is characterized in that a first thermal disturbance coverage map, a second shear wind high-risk area map, a third turbulence risk drainage basin map and a fourth sudden obstacle prediction area map are generated by a map construction module; the aircraft can judge whether the aircraft enters the dangerous area in real time and assess the safety of the flight path according to the superposed risk value. When the superposition risk value # imgabs0 # of the flight path section passing through the jth area in the first original flight path of the ith aircraft is in a middle risk section, the system generates a first-level avoidance strategy, and the height, the speed and the course of the aircraft are adjusted; and when the superposed risk value # imgabs1 # is a high-risk section, the system generates a secondary avoidance strategy, and bypasses a high-risk area by remarkably increasing the flight height and reducing the speed.

The invention relates to the field of unmanned aerial vehicle control, and discloses a police unmanned aerial vehicle management and control system for handling emergencies, which comprises a sensing module, a distribution module, a planning module, a control module, a tracking module and a feedback module. The sensing module is used for collecting environment data in real time and generating a three-dimensional environment model; the distribution module optimizes an unmanned aerial vehicle task distribution scheme; the planning module dynamically plans the optimal flight path of the unmanned aerial vehicle according to the task allocation result and the three-dimensional environment model; the control module dynamically adjusts the attitude and flight height of the unmanned aerial vehicle; the tracking module tracks the target position in real time and predicts the motion trail of the target; and the feedback module transmits the execution condition of the unmanned aerial vehicle, the target tracking result and the field real-time picture back to the command center. Through cooperative work of all the modules, rapid response and efficient disposal of emergencies are achieved, the system is particularly suitable for police service tasks in complex and dynamic environments, and the system has the advantages of being high in response efficiency, high in environmental adaptability and high in resource utilization rate.

The invention discloses a dense small target detection method for an unmanned aerial vehicle aerial photography scene, and belongs to the technical field of computer vision and target detection. In order to solve the problems of small target scale dynamic change and feature expression weakening caused by flight height change, imaging resolution difference and scene complexity in aerial photography of an unmanned aerial vehicle, the invention provides a detection framework fusing an attention scale selection (AGSS) module and a dynamic local self-attention (DPSA) module. The method specifically comprises the following improvements: (1) an AGSS module enhances the significance and discrimination ability of small targets in multi-scale features through global context modeling and a dynamic weight distribution mechanism; and (2) a DPSA module introduces a sparse selection mechanism in a channel dimension, and focuses computing resources on a channel sensitive to a small target, so that efficient and lightweight attention modeling is realized. The above modules cooperate with each other, so that high reasoning efficiency is maintained, and small target detection precision and robustness in a complex background, low illumination and dense target scene are significantly improved. Experimental results show that on typical unmanned aerial vehicle aerial photography data sets such as VisDrone-DET2019 and the like, the method is superior to an existing mainstream method in multiple indexes such as the average precision (mAP), the accuracy rate and the recall rate, especially has obvious advantages in the aspects of integrity and stability of small target detection, and has good practical application value and popularization prospects.

The invention relates to the technical field of unmanned aerial vehicle trajectory planning, in particular to a bidirectional tree random search method based on a complex environment node cost function, which comprises the steps of surveying obstacle data in a flight area and modeling, then introducing a target deviation strategy and a bidirectional search tree mechanism, and combining with an improved minimum cost method to obtain a random search result. Alternately expanding the two trees to generate an initial path, and integrating the path length, the obstacle distance and the flight height energy consumption by a cost function; and finally, pruning the initial path, removing redundant nodes, smoothing the trajectory by adopting a cubic spline interpolation method, ensuring curvature continuity, and generating an optimal path meeting the flight performance of the unmanned aerial vehicle. According to the invention, through an improved bidirectional minimum cost fast expansion random tree algorithm, dynamic association of obstacle constraint, target deviation and path cost in unmanned aerial vehicle path planning in a complex environment is represented, and a more efficient search convergence speed and better path quality are obtained. And rapid convergence and global optimization of the track of the unmanned aerial vehicle in a high-dynamic environment are realized.

The invention, which relates to the technical field of agricultural intelligent equipment, discloses an agricultural plant protection unmanned aerial vehicle sowing control system comprising a sowing flow field dynamic modeling and prediction module, an attitude regulation and control module, a speed matching module, a path compensation module, a visual monitoring module and a control strategy module. A flow field dynamic mapping model based on the flight height, the downward pressing airflow speed and the particle size and density of the scattered particles is constructed, particle drop point deviation is predicted in combination with flight real-time data, and a pneumatic coupling risk area is identified. Through flow field modeling prediction and attitude adjustment, trajectory compensation, speed control and visual feedback, adaptive regulation and control in the sowing process are realized, air scattering and nonlinear collapse are effectively prevented, seedling burning, germination failure and pesticide residue risks caused by over-dense sowing are avoided, the operation uniformity and the agricultural effect are improved, and the method has practical value and popularization prospects.

The invention discloses a power line inspection unmanned aerial vehicle pose estimation method and device based on multi-modal data fusion, and the method comprises the steps: obtaining detection data of a binocular vision sensor, an IMU and a TOF sensor, and obtaining multi-modal detection data; using TOF sensor data to initialize a flight height and performing scale alignment with a speedometer; determining a linear velocity reference value and an angular velocity reference value, and calculating adaptive weights of the binocular vision sensor and the IMU; according to the binocular vision sensor, the detection data of the IMU and the calculated adaptive weight, performing pose estimation based on an adaptive extended Kalman filtering algorithm to obtain a pose estimation result of the binocular IMU odometer; and fusing the pose estimation results of the monocular odometer and the binocular IMU odometer to obtain the final pose of the unmanned aerial vehicle. According to the method, the pose estimation precision, the environment adaptability and the robustness in the electric power line inspection process can be improved.

The invention discloses a rice yield estimation method based on unmanned aerial vehicle remote sensing and rice spike feature extraction, which comprises the following steps: firstly, assuming a ground section RTK base station and combining an unmanned aerial vehicle remote sensing platform to determine a coverage range and a spatial position of a rice region, and then collecting a rice image and canopy height and performing deblurring processing; then using a rice ear detection model to obtain a rice ear segmentation mask, determining a pixel scaling factor to construct a rice ear feature index, and carrying out statistical analysis and identification on key features to form a feature data set; performing yield estimation by using a rice yield estimation model, and optimizing the model in combination with the actual yield; and finally, transmitting the data to a ground end to generate a thermodynamic diagram and a statistical diagram, and carrying out regional comparison and time sequence trend analysis. According to the method, the influence of the flight height on yield estimation is eliminated based on the rice ear segmentation result in combination with high-precision depth information, and the accuracy and efficiency of rice yield estimation are effectively improved.

The invention provides an adjustable air-breathing power ultra-low orbit satellite configuration. The adjustable air-breathing power ultra-low orbit satellite configuration comprises an adjustable closed head part, a body, a stable wing surface and a contraction tail part, the adjustable closing head and the contraction tail are connected to the two opposite ends of the body respectively, and the stable wing face is connected to the side, close to the contraction tail, of the body. The design that the adjustable closing head is an openable / closable head is adopted, the adjustable closing head is a spherical head after being closed when a satellite does not need to inhale, and resistance is reduced; and after being expanded, the air inlet channel can be contracted into an inwards-concave air inlet channel, so that active compression of air is achieved. Therefore, task requirements under different flight heights can be met through flexible switching of the inspiration working mode and the non-inspiration working mode, the aerodynamic resistance of the satellite in an ultra-low orbit is effectively reduced, and the hang time of the satellite is prolonged.

A flight path generation system for generating a three-dimensional flight path for an unmanned aerial vehicle includes an acquisition device to acquire route data including information of a two-dimensional flight path of the unmanned aerial vehicle and map data including information of elevation at each point on the two-dimensional flight path, and a processor configured or programmed to generate the three-dimensional flight path by determining a flight altitude of the unmanned aerial vehicle from a ground on the two-dimensional flight path based on the two-dimensional flight path and the elevation. The processor is configured or programmed to determine the flight altitude in an excess region with an altitude not exceeding a first altitude and a first region with an altitude not exceeding the first altitude, such that a maximum value of the flight altitude of the unmanned aerial vehicle in the excess region does not exceed the first altitude.

The invention discloses an unmanned aerial vehicle channel inspection path optimization method based on dynamic environment perception, and relates to the technical field of unmanned aerial vehicle intelligent path planning. Comprising the following steps: establishing a three-dimensional environment model based on channel geographic information data and surveying and mapping point cloud data, and generating an initial routing inspection path set with a coverage range meeting requirements; predicting and generating an obstacle envelope sequence changing along with time by using a dynamic obstacle trajectory collected by an airborne radar and a camera, performing space-time superposition calculation on the obstacle envelope sequence and the initial inspection path, and removing path fragments conflicting with a future obstacle movement range to obtain an inspection path set after obstacle avoidance correction; and according to elevation information in the three-dimensional environment model, predicting a local area and a spatial range in which communication shielding may occur in the inspection path of the unmanned aerial vehicle, carrying out secondary correction on a path segment which is about to enter a communication shielding area, and outputting a corresponding flight height and speed sequence.

The invention discloses an artificial intelligence inspection system and method based on an unmanned aerial vehicle, and particularly relates to the technical field of artificial intelligence of the unmanned aerial vehicle. The method comprises the following steps: acquiring magnetic field interference parameters and terrain complex parameters in pipeline inspection paths in real time, extracting magnetic field intensity fluctuation characteristics and obstacle density abnormal change characteristics, calculating navigation and positioning system accuracy weight assignment of each path in combination with machine learning methods such as polynomial regression, and generating a comprehensive inspection accuracy index; the comprehensive accuracy index is compared with a gradient standard threshold value, so that the accuracy division of the inspection path is realized: for incomplete accuracy inspection, the accuracy abnormal degree of a future navigation system is predicted, and if necessary, the flight height is adjusted and an obstacle dense area is avoided; the problems of false detection and missing detection caused by magnetic field interference and complex terrain in the prior art are effectively solved, the efficiency, accuracy and reliability of the unmanned aerial vehicle inspection task are remarkably improved, and major disasters caused by the fact that leakage is not detected in time are avoided.

The invention discloses an intelligent navigation method and device of an unmanned aerial vehicle, equipment and a storage medium. The method comprises the following steps: acquiring point cloud data and motion data, and calibrating to obtain a relative position and time synchronization parameter; performing map construction on the point cloud data and the motion data to generate a three-dimensional point cloud map; analyzing the boundary coordinates of the flight area, the flight height and the route step length, and generating route planning parameters; the boundary of the target inspection area is defined by combining the three-dimensional point cloud map, and an optimized route and corresponding waypoint sequence data are generated through route planning; acquiring real-time pose data of the unmanned aerial vehicle, comparing the current position with the waypoint sequence, and triggering image acquisition when a preset waypoint reaches a tolerance range; inspection data is obtained; and integrating the real-time pose data, the three-dimensional point cloud map, the flight state and the inspection data to form an intelligent navigation route. According to the invention, high-precision positioning and linkage of waypoints and data acquisition are realized, and the navigation precision, the inspection efficiency and the operation safety are improved.

The invention belongs to the technical field of induced polarization detection, and provides an air-ground capacitance non-contact frequency spectrum induced polarization detection system and method.The air-ground capacitance non-contact frequency spectrum induced polarization detection method is characterized in that a plurality of power supply electrodes are arranged at intervals along a detection route, and a capacitance plate acquisition module is carried on an unmanned aerial vehicle flight module; the unmanned aerial vehicle flight module and the mobile platform unit are controlled to run along the detection route; an excitation signal with preset amplitude, current, voltage or / and frequency is sent to the power supply electrode, and feedback data generated by the capacitor plate acquisition module is obtained; calculating an optimal detection flight height according to the feedback data; and after the detection tasks of all the measuring points are completed, performing comprehensive processing and imaging inversion on the collected full-band data, generating an apparent resistivity distribution map and a polarization parameter profile map of the underground medium, and obtaining electrical information of the earth surface. According to the invention, the electrical information of the earth surface and the shallow layer in a large area can be rapidly obtained, and the method is suitable for high-efficiency induced polarization detection under various topographic conditions.

The invention discloses an emergency communication high-altitude base station system for an unmanned aerial vehicle, which relates to the technical field of communication and comprises an unmanned aerial vehicle platform, an intelligent flight control module, a communication management module, a multi-unmanned aerial vehicle cooperative technology module, a data analysis and decision support module, an encryption and security authentication module and a modular design structure. And the remote monitoring and maintenance module is used for maintaining the service system module. The intelligent flight control module integrates functions of flight strategy optimization, automatic obstacle avoidance and the like, can automatically adjust the flight height, angle and path of the unmanned aerial vehicle according to communication coverage requirements, and reduces the complexity and risk of manual operation; the multi-unmanned aerial vehicle cooperation technology module can realize information sharing, task cooperation and optimal distribution of communication resources among multiple unmanned aerial vehicles to form a distributed communication network, thereby not only improving the communication coverage and capacity, but also enabling the resource utilization to be more efficient.

The invention discloses a photovoltaic station unmanned aerial vehicle three-dimensional route planning method and system based on field angle self-adaption and terrain modeling. The method comprises the following steps: acquiring geographic position information of a photovoltaic panel; determining a vertical field angle according to the unmanned aerial vehicle image equipment parameters; generating a reference point based on geographic position information, performing horizontal clustering by adopting a density clustering algorithm to form an initial row group, and completing row-column grouping through linear fitting completion and correction of a row structure; dynamically determining a flight height for each waypoint through geometric model calculation based on a grouping result in combination with a vertical field angle and a pitch angle, and generating a three-dimensional waypoint; and determining a waypoint connection sequence based on a distance optimal principle, detecting and optimizing acute-angle turning, and generating a smooth three-dimensional flight path. According to the invention, full-automatic three-dimensional planning of the photovoltaic inspection route is realized, the system can adapt to complex terrains, the shooting quality is ensured, and the inspection efficiency is improved.

The invention relates to the technical field of intelligent inspection, in particular to a transformer substation unmanned aerial vehicle local area network automatic inspection method and system based on laser point cloud. The method comprises the following steps: firstly, obtaining three-dimensional point cloud data of a transformer substation through an unmanned aerial vehicle carrying a laser radar, and constructing an accurate spatial information model through calculation and color assignment processing; automatically identifying the equipment type based on the model, and generating an initial route according to a power grid inspection procedure; setting inspection parameters including flight height, speed, angle and the like, and optimizing an inspection route; then test flight verification is carried out, and the inspection result is evaluated by comparing a photographing result with a preset standard; when a problem is found, the system automatically triggers an adjustment instruction, obtains a correction parameter and determines a final inspection route; through three-dimensional space perception, intelligent planning and dynamic optimization, the accuracy and reliability of substation unmanned aerial vehicle inspection are effectively improved, and meanwhile, a complete quality guarantee mechanism is established.

The invention relates to an unmanned-driving-based air quality underway monitoring device which comprises an unmanned aerial vehicle main body, an air quality monitoring sensor module is arranged at the bottom of the unmanned aerial vehicle main body, and a data transmission module is arranged on the air quality monitoring sensor module. A positioning module, a control module and an energy supply module are arranged at the top of the unmanned aerial vehicle body, the control module controls the flight path, height, speed and take-off and landing points of the unmanned aerial vehicle body, a Gaussian diffusion model is constructed based on real-time monitoring data, the flight height and course are dynamically adjusted through deep reinforcement learning, and the flight speed is adjusted. An area with the maximum pollutant concentration gradient is preferentially explored. The air quality underway monitoring device is high in flexibility, high in real-time performance, low in cost, capable of monitoring multiple parameters, capable of monitoring multiple air quality monitoring parameters at the same time, capable of providing comprehensive air quality information and capable of providing a new generation of high-temporal-spatial-resolution monitoring solution for intelligent environmental protection.

The invention discloses an air route planning method, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining alarm point position information generated when a radar detects that a to-be-checked object appears in a target object, and the alarm point position information comprises the longitude, latitude and height of a target monitoring position where the to-be-checked object appears; planning a route from the target starting point to the target monitoring position according to the set safe flight height, the set waypoint spacing and the alarm point position information, so that the unmanned aerial vehicle shoots the target monitoring position according to the route; the route comprises position information of a plurality of waypoints, yaw angles and pitch angles for shooting a target monitoring position at each waypoint, and waypoint heights. Thus, the target monitoring position where the to-be-checked object appears can be flexibly shot in all directions, the shooting effect can be effectively improved, and the accuracy and convenience of checking the to-be-checked object based on the shot image subsequently are further improved.

The invention discloses an unmanned aerial vehicle route generation system which comprises a generation system body, the generation system body comprises a three-dimensional terrain modeling module, a multi-source sensor fusion module, an intelligent task planning module, a dynamic obstacle avoidance and safety module and a man-machine interaction and data management module, and the three-dimensional terrain modeling module is based on ASTER GDEM and DSM elevation data; the multi-source sensor fusion module is used for generating a three-dimensional digital elevation model (DEM) of an operation area, centimeter-level terrain matching is realized by combining an RTK positioning technology, and the multi-source sensor fusion module is used for integrating a laser radar, a visible light camera and an infrared sensor, collecting features of ground objects such as towers and vegetation in real time, and is used for dynamically adjusting an air route. The optimal route is automatically generated through an intelligent algorithm, manual intervention is reduced, route planning efficiency is remarkably improved, meanwhile, terrain adaptability can be enhanced, a terrain following algorithm is adopted, the flight height is automatically adjusted according to topographic relief, and accuracy and integrity of surveying and mapping data are ensured.

The invention discloses a method for positioning the position of an offshore structure based on an unmanned aerial vehicle loading monitoring system, the unmanned aerial vehicle loading monitoring system adopts a rigid platform suspended by an unmanned aerial vehicle cluster, and the rigid platform is provided with a full-automatic tracking total station, a GPS, a double-shaft tilt angle sensor and an ultrasonic distance measuring sensor. After the unmanned aerial vehicle cluster suspends the rigid platform to the inclined sky of the offshore structure, hovering is carried out; the flight height of the unmanned aerial vehicle cluster is adjusted through data of an ultrasonic distance measuring sensor, inclination angle data is measured through a double-shaft inclination angle sensor, and the levelness of the rigid platform is further calibrated; the full-automatic tracking total station is used for measuring the horizontal angle, the vertical angle and the slant distance of the offshore structure and uploading the horizontal angle, the vertical angle and the slant distance to the upper computer, the upper computer calculates the three-dimensional coordinates of the full-automatic tracking total station according to coordinate data of the GPS, and then the three-dimensional coordinates of the center point of the offshore structure are calculated. According to the invention, positioning of the offshore structure can be realized, monitoring dead angles are avoided, and personnel risk is reduced.

Disclosed in the present invention are a linear cultural heritage data collection method and apparatus based on unmanned aerial vehicle remote sensing. The method comprises: establishing digital twin precision systems; determining, on a satellite map, measurement ranges for different measurement objects of cultural heritages; determining data collection parameters of an unmanned aerial vehicle remote sensing device combination for each measurement object; determining a flight height on the basis of the minimum ground resolution corresponding to each measurement object and the data collection parameters; performing flight task planning on each measurement object to obtain a task planning result; obtaining image data collected by the unmanned aerial vehicle remote sensing device combination, and processing the image data to generate a two-dimensional digital result and a three-dimensional digital result, wherein the image data is obtained by means of the unmanned aerial vehicle remote sensing device combination performing data collection on linear cultural heritages according to the data collection parameters, the flight height and the task planning result; and constructing digital twin models with different levels of precision and forming a linear cultural heritage digital twin. The present invention can achieve high data collection efficiency and high data quality.

The invention relates to an unmanned aerial vehicle flight path planning comprehensive decision method and system, and the method comprises the steps: building a two-dimensional plane coordinate system for a target flight region according to the flight height of an unmanned aerial vehicle, and solving a minimum circumcircle for all obstacles in a two-dimensional plane; establishing an obstacle threat model of the unmanned aerial vehicle according to the minimum circumcircle of all obstacles in the two-dimensional plane; constructing a flight energy consumption model of the unmanned aerial vehicle according to the hovering power when the unmanned aerial vehicle hovers and the induction power when the unmanned aerial vehicle hovers; constructing a flight curvature model of the unmanned aerial vehicle according to the difference value of the direction angles between the adjacent path nodes of the unmanned aerial vehicle; establishing a target decision model of the unmanned aerial vehicle according to the obstacle threat model, the flight energy consumption model and the flight curvature model of the unmanned aerial vehicle; setting a flight starting point and a flight ending point of the unmanned aerial vehicle in a two-dimensional plane Extending path nodes of the unmanned aerial vehicle by using the target decision model from the flight starting point of the unmanned aerial vehicle; updating the parameters of the target decision model according to the obstacle threat of the unmanned aerial vehicle and the accumulated length of the current path every time the path node is expanded; and obtaining a final flight path of the unmanned aerial vehicle until the distance from the expanded path node to the flight end point of the unmanned aerial vehicle is smaller than a set threshold value. According to the method, the detail expression capability and the algorithm flexibility of route planning are effectively improved, and efficient route planning considering safety, economy and feasibility is realized in a complex two-dimensional scene.

The invention relates to the technical field of noise modeling, in particular to a low-altitude aircraft environment noise modeling method and system. Sound source directivity data of the low-altitude aircraft at different positions under the spherical coordinate system are reprojected to a hemispherical surface and then converted into sound source directivity tensors; converting the environmental topographic information and the building geometric information into topographic layout tensors; fusing the advanced features of the sound source directivity tensor, the advanced features of the terrain layout tensor, the frequency features of the low-altitude aircraft at the current moment and the flight height features of the low-altitude aircraft at the current moment to obtain multi-modal potential features at the current moment; and inputting the multi-modal potential features at the current moment into the diffusion model, and outputting a noise intensity graph of the low-altitude aircraft at the current moment. According to the method, complex multi-modal conditions such as noise source characteristics, terrain layout and flight height of the low-altitude aircraft can be accurately captured and fused, and the efficiency, precision and generalization ability of noise modeling are effectively improved.

The invention provides an optimal abortion guidance and online trajectory planning method for an aircraft, belongs to the technical field of industrial control systems, and solves the problems that an existing guidance and trajectory planning algorithm is low in robustness and cannot be applied when the flight height is low in a Mars environment. Comprising the steps that 1, the thrust direction of an aircraft in the descent stage is optimized based on a safe abortion guidance algorithm; 2, establishing a power-sliding-power three-stage trajectory optimization model based on an online trajectory algorithm, and introducing a tail end trajectory constraint to generate a trajectory planning scheme; and step 3, embedding the safe abortion guidance algorithm and the online trajectory optimization algorithm into an airborne computer of the aircraft, intelligently switching the safe abortion guidance algorithm and the online trajectory optimization algorithm at different flight stages of the aircraft, completing an orbit injection task of the aircraft, and ensuring accurate insertion of a tail end orbit.

The invention discloses an unmanned aerial vehicle autonomous route planning method and system capable of adapting to environmental changes. The method comprises the steps of obtaining a dynamic three-dimensional situation map of a flight area of an unmanned aerial vehicle based on multi-source data of the flight area of the unmanned aerial vehicle; acquiring a current no-fly zone and weather forecast information of the flight area of the unmanned aerial vehicle, and analyzing and acquiring a flight risk distribution condition of the flight area of the unmanned aerial vehicle based on the dynamic three-dimensional situation map; considering the flight risk distribution condition of the unmanned aerial vehicle flight area, the unmanned aerial vehicle flight task and the unmanned aerial vehicle self-state information to generate an unmanned aerial vehicle reference route; and automatically adjusting the flight speed, the flight height and the flight course of the unmanned aerial vehicle according to a preset flight parameter adjustment model based on the acquired multi-source data and the state information of the unmanned aerial vehicle in the process of flying along the reference route. According to the invention, the reliability and safety of flight task execution of the unmanned aerial vehicle in a complex dynamic environment can be improved.

The invention belongs to the technical field of remote sensing image processing and target inversion, and particularly relates to a hyperspectral image aerial aircraft height and spectral reflectivity inversion method based on wake clouds and shadows of the wake clouds. In order to solve the technical problems of low aerial aircraft height inversion precision and inaccurate spectral reflectivity inversion in the prior art, firstly, wake cloud and shadow detection, matching and geometric modeling are performed on a hyperspectral image, and the aircraft flight height is inverted by using a stable geometric relationship between the wake cloud and the shadow; high-precision height extraction is realized; and then combining flight height information to establish a radiation transmission model for coupling the aerial aircraft and the background environment, and inverting the spectral reflectivity of the model. Through integrated processing of wake cloud detection, shadow matching, height inversion and spectral reflectivity inversion, the accuracy and applicability of aerial aircraft characteristic inversion are significantly improved, and an effective technical support is provided for application of hyperspectral remote sensing in aerial aircraft monitoring and identification.

The invention discloses a firework emission accurate control method based on sensor fusion. The firework emission accurate control method comprises the following steps: S1, configuring a firework control module; s2, installing a firework control module at the top of a firework shell, and carrying out initialization; s3, collecting real-time attitude data, and performing Kalman filtering processing; s4, collecting air pressure data, and calculating the relative flight height; s5, constructing a display shell flight trajectory prediction model, and calculating a trajectory deviation value; s6, judging whether the attitude prediction value, the height prediction value and the trajectory deviation value meet requirements or not; s7, if the judgment conditions are met at the same time, an electric blasting fuse is triggered to ignite the display shell; s8, the posture prediction value, the track deviation value and the set-off state mark are sent to a multi-bullet cooperative control unit; and S9, coordinating the display shell to synchronously set off according to a preset pattern. According to the method, sensor data, Kalman filtering and a trajectory prediction modeling method are fused, display shell attitude judgment and collaborative setting-off are achieved, and the method has the advantages of being accurate, safe and high in synchronism.

The invention provides a low-altitude traffic operation control method and system based on moving block. The method comprises the following steps: layering an airspace according to aircraft type performance and service types for the vertical take-off and landing aircraft, and distributing corresponding entering and leaving areas according to flight height layers of the aircraft; quasi-moving block is introduced into a low-altitude traffic system, an air route network and operation rules are designed, a free area-buffer area-block area three-level space structure of an aircraft is dynamically constructed according to the state of the aircraft, when the front aircraft occupies a certain block area, the first area in front of the block area is a buffer area, and the second area in front of the block area is a block area. The second zone in front of the blocking zone is a free zone, the aircraft flies in the free zone according to the current speed, and the aircraft is selected for braking in the buffer zone according to the braking distance obtained through calculation. According to the method, the braking curve is generated by dynamically dividing'free area-buffer area-block area 'and combining the braking performance, so that the safety redundancy is increased, and the safety and airspace utilization rate is improved.

The invention discloses an air base station deployment method and system with strong access time delay guarantee in a disaster emergency scene, and mainly solves the problem of user access time delay deterioration caused by coverage instability when an air base station is deployed to a fixed-wing unmanned aerial vehicle in the disaster emergency scene in the prior art. The implementation scheme comprises the following steps: establishing an unmanned aerial vehicle communication network analysis model and a user reachable rate model; a theoretical efficiency evaluation system with the effective capacity statistical characteristic as the core is provided to comprehensively describe the access time delay performance and the coverage stability; designing an optimal flight path radius and height, and determining the number of base stations required for realizing access time delay strong guarantee; and deploying the obtained number of base stations to the same number of fixed-wing unmanned aerial vehicles circling over the disaster area according to the optimal flight height and radius, thereby realizing aerial base station deployment with strong access time delay guarantee. According to the method, the network deployment efficiency of the delay sensitive service can be effectively improved, the trial and error cost and the time cost of disaster emergency network deployment are remarkably reduced, and the method can be used for realizing strong access delay guarantee of emergency communication in a disaster emergency scene.