349results about How to "Improve survivability" patented technology

The huge progress of the autonomous technology promotes the rapid development of imaging satellites, and the satellites have advanced functions such as on-satellite autonomous decision making, inter-satellite link communication and multi-satellite collaborative planning in the future. High timeliness, autonomy and intelligentization become an important trend of development of a satellite task planning system. The invention provides a multi-satellite autonomous cooperative scheduling algorithm based on distributed multi-agent reinforcement learning aiming at the characteristics of limited on-satellite computing power, simple inter-satellite cooperative mechanism, unstable communication link and the like in on-satellite autonomous planning, and supports each satellite to carry out distributed autonomous decision based on local communication information. According to the method, a good task planning effect can be achieved while low communication consumption is kept, and the method has quick response capability and good system survivability.

The invention discloses a network construction type energy storage transient performance improving method and system, and the method comprises the steps: dividing a maximum current threshold value of an energy storage current converter in a transient state into a current under a dq coordinate system, calculating the total impedance required by current limiting through combining the component of the A-phase current output by the energy storage current converter on a d axis and the voltage difference between the two ends, setting the virtual impedance, and carrying out the current limiting through the virtual impedance. Virtual impedance is introduced into a current control link to realize over-current limitation; and the current control link outputs voltage, and the output voltage acts on the VSG power control link to realize power angle control. The system comprises a current control module and a power control module. According to the invention, through adaptive adjustment of the virtual impedance and correction of the active power instruction value, the overcurrent is effectively suppressed in the low voltage ride through process, and the power angle of the system is maintained to be stable, so that the transient performance of the network-forming type energy storage system is improved.

The invention relates to an anti-electromagnetic interference device and method applied to a short-range unmanned aerial vehicle. The equipment comprises an electromagnetic pulse induction module, a power supply module, an electromagnetic pulse shielding device, a data processing and control module, an ultrahigh frequency signal generator and a signal transceiving module. Through a high-efficiency assembly, a high-efficiency electromagnetic pulse detection mechanism and an electromagnetic pulse protection scheme, an integrated design and a systematized layout strategy are combined, and a set of electromagnetic pulse interference resisting equipment which has a wide and accurate monitoring frequency spectrum and a strong electromagnetic pulse shielding capability and also gives consideration to the portability of the unmanned aerial vehicle is constructed. The equipment has the capability of monitoring and filtering electromagnetic pulses in a specified range in real time, and ensures that a carried unmanned aerial vehicle system can resist electromagnetic pulse invasion of certain intensity, so that the survival capability and the system reliability of a short-range unmanned aerial vehicle in an electromagnetic interference environment are remarkably improved.

The invention relates to a lifting type net cage culture structure based on a fan single-pile foundation, and the structure comprises the fan single-pile foundation which is used for being inserted into a seabed; the net cage is arranged on the fan single pile foundation in a lifting and sleeving manner in the height direction; the guide mechanism comprises a guide piece extending in the height direction, the guide piece is fixedly connected to the fan single pile foundation, and the net cage is arranged on the guide piece in a sliding mode. The lifting type net cage culture structure based on the fan single pile foundation has high safety and stability.

The invention belongs to the technical field of electromagnetic protection, and relates to an electromagnetic protection device based on mechanical wave nonlinear attenuation, which comprises a piezoelectric substrate, and a signal input component, a nonlinear attenuation component and a signal output component which are sequentially arranged on the piezoelectric substrate at intervals, the nonlinear attenuation component comprises an energy absorption structure, a deformation structure and a rigid connection structure. The energy absorption structures are made of energy absorption materials and are arranged above the piezoelectric substrate at intervals; the deformation structure is made of a mechanical metamaterial, and two ends of the deformation structure are respectively connected with the energy absorption structure and the piezoelectric substrate; one end of the rigid connection structure is connected with the energy absorption structure, and the other end is spaced from or abutted against the piezoelectric substrate; the signal input component converts electromagnetic wave signals into mechanical waves, the nonlinear attenuation component deforms under propagation of the mechanical waves, the deformation quantity is in direct proportion to the strength of the mechanical waves, and the signal output component converts the mechanical waves into the electromagnetic wave signals and outputs the electromagnetic wave signals. According to the invention, electromagnetic protection can be realized based on mechanical wave nonlinear attenuation.

The invention belongs to the field of aircraft control, and discloses a composite guidance aircraft guidance control method and system considering flight time falling angle constraint, and the method comprises the steps: inputting target values of flight time and a terminal falling angle according to a specific task requirement; pre-planning a flight path; in the flight process, estimating the current remaining flight time of reaching the target in real time, and performing feedback adjustment on the flight time error; in a flight approaching target stage, calculating a falling angle error in real time according to the attitude and speed of the aircraft, and correcting the flight attitude; through a nonlinear optimal control algorithm, two constraints of flight time and a falling angle are comprehensively balanced; executing mechanisms such as engine thrust, control surface angle and attitude control spray pipes of the aircraft are adjusted in real time according to a composite guidance algorithm instruction; and when the aircraft is about to arrive at the target, final falling angle correction is performed to ensure that the aircraft hits the target at an accurate angle. According to the method, the balance problem between the flight time constraint and the falling angle constraint is effectively solved, and the guidance precision and the task success rate of the aircraft are remarkably improved.

The invention discloses bifidobacterium longum subsp. Longum IMAU12449 and application thereof, belongs to the technical field of microorganisms, and provides the bifidobacterium longum subsp. Longum IMAU12449, the bifidobacterium longum subsp. Longum IMAU12449 is preserved in the China General Microbiological Culture Collection Center on July 8, 2024, the preservation address is No. 3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC NO. The preservation number is CGMCC (China General Microbiological Culture Collection Center) The invention provides application of the bifidobacterium longum subsp. Longum IMAU12449 in preparation of fermented cow milk and / or soybean milk. The bifidobacterium longum subsp. Longum IMAU12449 is used as a potential probiotic to prepare cow milk and soybean milk, and the prepared fermented milk is stable in viable count, moderate in acidity and free of whey precipitation.

The invention relates to a robust video watermark embedding method combined with error correction coding, which is characterized in that firstly, the embedding position and strength of a watermark are adaptively adjusted according to the complexity of a video picture, the invisibility of the watermark is ensured by the adaptability, and the robustness of the watermark in various scenes is improved; the visual distortion of the video is avoided; secondly, performing error correction coding processing on watermark information in a watermark embedding process so as to automatically detect and correct a bit dislocation problem caused by compression, transmission or hostile attack during watermark bit extraction; and finally, embedding the watermark into the original video according to the watermark embedding algorithm logic. According to the method, the watermark is embedded in a self-adaptive manner according to the picture complexity, so that the problem of bit dislocation during extraction of watermark bits is solved, and good invisibility of the watermark and good stability of a code stream are ensured.

The breaking and preventing combined floating breakwater comprises a wave resisting system, a wave breaking system and an anchoring system, the wave resisting system is arranged in the rear area of the wave breaking system and comprises columnar water bags, the columnar water bags are filled with water and connected through cables to form a wave reflecting wall, and the wave breaking system comprises a wave breaking pile array which is distributed in a grid shape like a Chinese character'tian '; the wave resisting system and the wave breaking system are fixed through the anchoring system. The wave resisting system and the wave breaking system are combined, firstly, the grid shaped like the Chinese character'tian 'is distributed in front of a shield area to break waves, then the columnar water bag is used for resisting waves behind the shield area, the breakwater is fixed through the piles and the anchors, the wave dissipating performance is improved to the maximum extent, the wave resisting purpose is achieved, and therefore the effect of protecting the coastline or related facilities is achieved; the structure is simple, the cost is low, the processing and the arrangement are easier, and the method is suitable for large-area construction; and the device is small in storage and transportation volume, light in weight and suitable for body transportation and storage.

The invention discloses a low-voltage circuit cable convenient and quick to connect, which relates to the technical field of low-voltage cables, and comprises a first low-voltage circuit cable body which is arranged at the left side end of an outer protection connecting end, forms circuit connection with a second low-voltage circuit cable body through the outer protection connecting end, and is used for forming a complete closed electrical circuit, under the cooperation of the magnetic connection end and the magnetic fixing end, the whole cable butt joint operation is realized, the connection process is greatly simplified, the skill requirement on operators is reduced, the mechanical stability in the connection process is ensured, the cable is prevented from being accidentally broken, the stability of internal electrical connection is also ensured, and the service life of the cable is prolonged. According to the low-voltage circuit cable connection system, the power or signal transmission is ensured not to be interfered, the viability of the whole low-voltage circuit cable connection system in a severe environment is improved, the electrical performance of cable connection is improved under the cooperation of the distance adjusting control assembly, and the potential safety hazards of heating, electric energy loss and the like caused by the increase of contact resistance are reduced.

The invention provides a deep reinforcement learning air combat decision-making method based on situation prediction, belongs to the technical field, and solves the technical problem that an unmanned aerial vehicle cannot realize autonomous decision-making and environment self-adaption in a complex air combat environment. According to the technical scheme, modeling is carried out through kinematics and dynamics characteristics of the unmanned aerial vehicle to adapt to the actual flight state; establishing a deep enhanced confrontation environment for unmanned aerial vehicle confrontation training; dynamically evaluating the state of the enemy unmanned aerial vehicle by using an LSTM prediction algorithm, and quickly obtaining the state of the enemy unmanned aerial vehicle at the next moment; and taking reward distribution as input of a decision maker, and inferring enemy unmanned aerial vehicle situation actions in combination with a prediction state and a reward result to realize tracking strike. According to the method, the advantage of machine intelligent calculation and human experience judgment are combined, the intention recognition accuracy of the enemy unmanned aerial vehicle is improved in a complex and uncertain environment, and the decision-making ability and tactical advantages of our unmanned aerial vehicle are enhanced.

The present invention discloses a vertical intelligent take-off and landing field take-off and landing control system, which relates to the technical field of take-off and landing of take-off and landing fields, including an environmental monitoring module, an intelligent flight scheduling module, a vertical catapult take-off module, a take-off and landing field tilt control module, a fault accurate warning and processing module and a flight data in-depth analysis module: an environmental monitoring module: real-time monitoring of environmental parameters of the take-off and landing field, and automatic adjustment of monitoring strategies for extreme weather conditions; an intelligent flight scheduling module: real-time monitoring of environmental parameters and aircraft status, and intelligent planning of the take-off and landing path and time of the aircraft; in the present invention, through the real-time monitoring and strategy adjustment functions of the environmental monitoring module, the system can automatically adjust the monitoring strategy for extreme weather conditions to ensure the safety of aircraft take-off and landing, greatly improving the adaptability and survivability of helicopters in complex environments, especially in places with relatively harsh conditions such as mountainous areas and waters, and can significantly reduce take-off and landing accidents caused by weather factors.

The invention discloses a multi-orbit and multi-system oriented low-orbit remote sensing satellite inter-satellite communication system, which comprises an inter-satellite medium and low orbit subsystem, an inter-satellite ground subsystem and an inter-satellite high orbit subsystem. The inter-satellite medium and low orbit subsystem is used for establishing a communication link with low orbit satellites and transmitting measurement and control information between the low orbit satellites; the inter-satellite ground subsystem is used for establishing a communication link with a ground station and transmitting measurement and control information between the satellite and the ground; the inter-satellite to-ground subsystem is also used for establishing a communication link with the near-ground aircraft to complete measurement and control information transmission; the inter-satellite high-orbit subsystem is used for establishing a communication link with a high-orbit satellite and transmitting satellite-ground measurement and control information; when a satellite-ground fault occurs, the inter-satellite communication system of the low-orbit remote sensing satellites establishes a satellite-ground fault troubleshooting communication channel to transmit information required by system troubleshooting. According to the method, the problem of simultaneous communication of inter-satellite communication links of the low-orbit remote sensing satellite under various systems in a cross-orbit manner is solved, and a technical foundation is laid for a multi-orbit multi-system inter-satellite communication application scene of the low-orbit remote sensing satellite.

The invention belongs to the technical field of unmanned aerial vehicle attack and defense, and discloses an intelligent defense and attack control system for an unmanned aerial vehicle. The method comprises the following steps: acquiring environment sensing data of an unmanned aerial vehicle, wherein the environment sensing data comprises state data of the unmanned aerial vehicle and image data of a surrounding environment; preprocessing the image data of the surrounding environment to obtain model input image data; performing target detection on the model input image data by using a variant Poolform algorithm to obtain comprehensive information of a target object; according to the state data of the unmanned aerial vehicle and the comprehensive information of the target object, solving an optimal attack defense strategy by using a perception integrated attack algorithm; the optimal attack defense strategy is sent to an unmanned aerial vehicle execution terminal, and the unmanned aerial vehicle is controlled to execute the optimal attack defense strategy; the optimal attack and defense strategy can be dynamically generated according to the real-time change of the environment situation, and the survivability and the attack efficiency of the unmanned aerial vehicle in the confrontation environment are remarkably improved.

The invention discloses a distributed online adaptive task planning system for an unmanned aerial vehicle group, and relates to the technical field of unmanned aerial vehicle task planning. The system comprises a data acquisition and processing module, a task planning and distribution module, a path planning module, a load configuration module, a real-time monitoring and adjusting module, a cooperative control module, a real-time communication module and an optimization module, and generating a task planning scheme and performing task allocation by applying an online optimization algorithm and a self-adaptive technology. According to the invention, the task planning and distribution module integrates advanced algorithms and technologies to perform task planning and task distribution, so that each unmanned aerial vehicle can bear appropriate task load, an unmanned aerial vehicle / vehicle cluster can autonomously and efficiently complete diversified tasks in a complex environment, intelligent scheduling, path optimization and cooperative operation of the unmanned aerial vehicles / vehicles are realized, and the unmanned aerial vehicle / vehicle cluster is enabled to be more intelligent. And the self-organization capability, the dynamic adaptability and the collaborative operation efficiency of the unmanned aerial vehicle group are improved.

The unmanned aerial vehicle flight path and interference resource joint optimization method for the composite interference networking radar comprises the following steps: introducing suppressing interference while flight path deception is carried out, and determining an unmanned aerial vehicle cluster composite interference networking radar model; the method comprises the following steps of: establishing an unmanned aerial vehicle track and interference resource joint optimization model for the composite interference networking radar by jointly optimizing and configuring beam pointing, track and power resources of an unmanned aerial vehicle and taking motion parameters of the unmanned aerial vehicle as constraints and minimizing the detection probability of the networking radar on the unmanned aerial vehicle for implementing an interference task as an optimization target; and solving the optimization model by using a hybrid optimization algorithm combining a particle swarm optimization algorithm and an interior point method to realize composite interference on the networking radar. According to the method, the difficulty of implementing flight path deception by the unmanned aerial vehicle is reduced, the feasibility of flight path deception is effectively improved, the suppression interference is introduced on the basis of deception interference, the interference effect on the networking radar is further improved by reasonably distributing interference resources, and the probability that the unmanned aerial vehicle is found is reduced.

The invention relates to the technical field of biological prevention and treatment, and discloses a composition for preventing and treating rice sheath blight disease, which is prepared from the following raw materials in parts by weight: 80 to 90 parts of validamycin, 30 to 45 parts of traditional Chinese medicine extract paste, 10 to 20 parts of traditional Chinese medicine raw medicine, 15 to 19 parts of white carbon black, 10 to 17 parts of copper sulfate, 12 to 16 parts of chitosan, 9 to 15 parts of gibberellin, 5 to 9 parts of tebuconazole, 1 to 5 parts of compound sodium nitrophenolate, 2 to 4 parts of emulsifier and 1 to 3 parts of synergist. Gleditsia sinensis, sanguisorba officinalis, flos rhododendri mollis and sapindus mukorossi peel in the traditional Chinese medicine raw medicines are used for synergistically killing bacteria, enhancing the immunity of plants and delaying the decomposition of validamycin, and meanwhile, extracts of honeysuckle, dandelion, croton and artemisia annua in the traditional Chinese medicine extract are complementary with validamycin in the aspects of sterilization, virus resistance and plant resistance improvement; therefore, the effect of validamycin is more durable, the duration of single application is longer, and the manpower and material resource cost is saved.

The invention relates to a wind and wave combined power generation device and a wind-wave-storage island micro-grid control method thereof.The power generation device comprises a wind power unit, a wave energy unit and an energy coupling unit, and the wind power unit and the wave energy unit which are connected through a coupler both drive hydraulic motors to rotate and do work in a hydraulic transmission mode; the two are fixedly connected through a coupler to couple and superpose wind wave power, and energy is supplied to the island micro-grid through the energy conversion process of mechanical energy-hydraulic energy-mechanical energy-electric energy. The inertia supporting capacity of a rotating element is reserved through a wind wave storage multi-energy networking structure without a current converter, the volatility of wind energy and wave energy can be effectively reduced, the advantages of wind wave storage power response and supporting are coupled while the wind energy and the wave energy participate in island micro-grid frequency modulation, multi-energy joint participation in micro-grid frequency modulation is achieved, and the micro-grid frequency modulation efficiency is improved. And the stability and the survivability of the island micro-grid system are effectively improved.

The invention belongs to the technical field of spaceflight launching, and particularly relates to a primary and secondary satellite in-orbit maneuvering control method and device and a storage medium. The control method comprises the following steps: step 1, controlling a primary satellite and a secondary satellite to enter an orbit; 2, acquiring task requirements in real time, and calculating to obtain an on-orbit maneuvering strategy of the child satellites based on an autonomous maneuvering control algorithm; 3, potential attack and defense threats are analyzed, and the possible influence on in-orbit maneuver control is evaluated; key defense measures of the child satellite and the mother satellite in the maneuvering process are determined, and a coping strategy is formulated; and 4, establishing a real-time monitoring system, continuously collecting state information, orbit data and potential threat information of the child satellites, and adjusting a maneuvering control strategy according to the state information, the orbit data and the potential threat information of the child satellites. According to the method, the operation flexibility and the task response speed in a complex environment are improved.

The invention relates to an oncolytic virus VSV-aPDL1 / aCD137 for expressing a bispecific antibody as well as a construction method and application of the oncolytic virus VSV-aPDL1 / aCD137. The preparation method comprises the following steps: firstly designing aPDL1 / aCD137, then synthesizing an aPDL1 / aCD137 gene in vitro, amplifying the aPDL1 / aCD137 gene, connecting the aPDL1 / aCD137 gene to a pT7-VSV whole genome plasmid to obtain a virus whole genome plasmid pT7-VSV-aPDL1 / aCD137, and then co-transfecting the plasmid and a helper plasmid to a 293T cell to obtain the VSV-aPDL1 / aCD137 oncolytic virus. According to the present invention, the local anti-tumor immune response of the tumor is activated through the virus, the infiltration of the lymphocyte to the tumor tissue is recruited, the anti-PD-L1 / anti-CD137 bispecific antibody is expressed, the inhibition of the PD-1 / PD-L1 pathway on the T cell is blocked, and the inhibition signal of the PD-1 / PD-L1 pathway on the tumor cell surface is reversed into the CD137 signal of the activated T cell, such that the functional failure of the T cell caused by the PD-1 / PD-L1 pathway can be blocked, and the anti-tumor immune response of the tumor can be inhibited; the function and viability of T cells can be further improved, long-term immune surveillance on tumors is realized, and long-acting anti-tumor immune response is generated. Experiments show that the oncolytic virus can significantly prolong the lifetime of tumor-bearing mice, and a new strategy is provided for development of solid tumor drugs.

The invention provides a skin care composition containing stem cell extract as well as a preparation method and application of the skin care composition, and belongs to the technical field of cosmetics. The method comprises the following steps: mixing and culturing the extracted urine-derived stem cells and pilose antler stem cells in a DMEM culture medium added with epidermal growth factors, cholera toxin, penicillin, streptomycin, transferrin, IL-2 and IL-15, then separating a culture solution to obtain mixed exosomes, mixed stem cells and extracellular matrixes, preparing the mixed stem cells into stem cell lipidosome, and preparing the stem cell lipidosome. Embedding the stem cell extract and the mixed exosome into titanium dioxide / silicon dioxide microspheres, adding into an extracellular matrix, and uniformly dispersing to obtain the skin care composition containing the stem cell extract. The skin care composition containing the stem cell extract prepared by the invention can obviously prolong the preservation period of stem cells and exosomes and improve the repair and improvement of the stem cells and the exosomes on skin, and the prepared composition has better effects of resisting aging, whitening, promoting skin elasticity, resisting wrinkles and the like, and has a wide application prospect.

The invention discloses a distributed intelligent space defense combat adaptive system architecture, which relates to the technical field of command and control and comprises a distributed node deployment and networking system, a distributed situation intelligent sensing system, an adaptive decision system and a joint global command and control system. According to the distributed intelligent air and space defense combat adaptive system architecture provided by the invention, resources are effectively integrated through the distributed node deployment and networking system, the adaptive decision making system and the distributed situation awareness system, so that a highly integrated combat system is formed; through combination with the global command control system, cross-domain and cross-platform command control is realized, and the collaboration and consistency of combat actions are ensured.

The invention firstly provides an intestinal tract targeted pH-ROS double-response hydrogel packaging system, the hydrogel packaging system is sodium alginate (SA)-based hydrogel modified by ketothioacetal (tK) and calcium ions, and the hydrogel is used for intestinal tract probiotics lactobacillus rhamnosus GG (LGG). Wherein the hydrogel in unit volume contains 10 < 8 >-10 < 9 > CFU of LGG (Ligusticum Glycol Glycol); the LGG is the LGG modified by EGCG-Mn nano particles, namely LGG (at) EGCG-Mn. The hydrogel matrix adopted in the packaging system not only provides enough gastric acid resistance for the LGG, but also promotes colon targeting and enhances intestinal retention. More importantly, the modification of the EGCG-Mn nanoparticles endows the LGG with a cell protection capability in an excessive ROS environment, so that targeted release, stable survival and colonization of the LGG after the LGG reaches the colon are realized. The technical problems that the LGG cannot reach the colon sufficiently and is difficult to survive stably in the prior art are solved, and an unexpected technical effect is generated; and the method is simple to operate, quick in reaction and mild in reaction condition, and has important practical application prospects.

The invention relates to the technical field of underwater robot formation, in particular to an underwater unmanned underwater vehicle cluster defense confrontation method, which utilizes an underwater unmanned cluster to make up the defect of insufficient functions of a single platform by means of the number advantage, and aggregates various underwater platforms with different functions to form a common body capable of completing a given task together; a traditional expensive large manned platform is replaced by a large number of small-size low-cost distributed unmanned platforms, and the distributed unmanned platform has the advantages of being high in efficiency, low in cost, reconfigurable and capable of executing multiple tasks, is used for underwater defense and resistance, and can greatly increase the underwater reconnaissance search range and improve the response speed and the confrontation effect.

The invention discloses an anti-seismic fault crossing system and method based on self-adaption. The system comprises a distributed optical fiber module, a micro electro mechanical system module, a central processing module, a material control module and an execution module. The distributed optical fiber module and the micro-electro-mechanical module monitor temperature, strain and dynamic response data of a building in real time through the optical fiber node and the micro-electro-mechanical node respectively, and transmit the data to the central processing module; the central processing module is responsible for analyzing and predicting data in real time and generating a control instruction; after the material control module receives a control instruction, the control instruction is converted into an electric signal or a magnetic field control signal through the signal processor, the drive circuit and the interface unit, a material assembly in the execution module is driven to deform or change physical characteristics, and the structural rigidity and damping of a building are dynamically adjusted. The rigidity and damping of the building structure are dynamically adjusted, the shock resistance of the building in the fault area is improved, and the safety and stability of the building are improved.

The invention discloses a photoelectric ball protection device for a reconnaissance type unmanned aerial vehicle. A photoelectric ball (2) is arranged at the belly of the unmanned aerial vehicle in front of a nose landing gear (1); a supporting mechanism (3) of the nose landing gear (1) is connected with a front fork (4) through a pair of double-lug bolts, and the front fork (4) is connected with a front wheel (5); the double-lug bolts are respectively a strong bolt (6) and a weak bolt (7); under the condition that the airplane heavily lands or rushes out of a runway, the weak bolt (7) is cut off, and the lower part of the front fork (4) can be stopped after rotating around the strong bolt (6) by a preset angle; after locking, the total descending height of the nose landing gear (1) is smaller than the sum of the total compression distance of a buffer of the nose landing gear (1) and the safe distance between the photoelectric ball (2) and the ground. The survival probability of the photoelectric ball in airplane heavy landing and runway rushing-out accidents can be improved.

The invention discloses a ship-based 5G clock synchronization system and method, and belongs to the design of mobile communication networks, and the system at least comprises a main clock source, a standby clock source, a bearer network I, a bearer network II, a bearer network III, a 5G base station, and a 5G core network. The main clock source and the standby clock source are used for providing clock messages for a bearer network composed of the bearer network I, the bearer network II and the bearer network III, and the priority of the main clock source is higher than that of the standby clock source; the bearer network I, the bearer network II and the bearer network III are all in signal connection with the 5G core network and the 5G base station; the main clock source, the standby clock source and the 5G base station are common clock nodes; the bearer network I, the bearer network I and the bearer network III are boundary clock nodes; the main clock source and the standby clock source are both 1588V2 clocks. Therefore, frequency synchronization and time synchronization can be provided at the same time, the main clock source and the standby clock source are provided, and the technical problems of potential safety hazards, poor survivability and the like in a current ship-borne scene are solved.

The invention discloses a flutter control method and a flutter control device for a high-aspect-ratio wing. The flutter control method comprises the following steps: acquiring an initial flutter speed of the wing; steel cables are installed on the wings, and pre-tightening force is applied to the steel cables in the flight state through a servo mechanism so as to limit torsion of the wings; acquiring the expansion flutter speed of the wing after the pre-tightening force is applied to the steel rope; starting a wingtip angular displacement sensor in the flight process of the unmanned aerial vehicle, wherein the wingtip angular displacement sensor is used for monitoring a wingtip torsion angle and a torsion angular speed in real time; and when the flight speed of the unmanned aerial vehicle exceeds the extended flutter speed, a servo mechanism is used for dynamic control. The problem of how to improve the flutter speed and enable the unmanned aerial vehicle to safely fly at a higher speed so as to improve the flight performance of the unmanned aerial vehicle is solved.

The present application relates to a wave power generation device, including a floating platform, a plurality of wave power generation units and a turbine unit; the plurality of wave power generation units are connected to each other and to the floating platform to form an annular structure; the wave power generation unit includes a floating structure, a seawater flow channel and an air flow channel are arranged in the floating structure, the air flow channel is located above the seawater flow channel and is connected to the seawater flow channel; a seawater flow channel outlet is opened on the side of the floating structure away from the center of the annular structure, and the seawater flow channel outlet is used to connect the seawater flow channel with the sea; the turbine unit includes an air turbine and a generator, and the air turbine connects the air flow channel and the generator. In this way, the anti-overturning ability of the wave power generation device can be improved, the stability of the wave power generation device can be effectively improved, and the survivability of the wave power generation device in extreme sea conditions can be improved; the frequency response width of the wave power generation device can be effectively widened, and then the power generation efficiency of the wave power generation device can be effectively improved.

The invention belongs to the technical field of radars, and discloses a radar networking anti-interference method based on a digital array radar software definition multifunctional digital radio frequency technology. Various working modes of conventional radar narrowband and broadband detection, multi-station cooperative detection and anti-interference, external radiation source cooperative detection, single-station / double-station MIMO detection, channelized external electromagnetic environment cognitive reconnaissance, cooperative interference, detection and drying integration, multi-platform communication and the like can be realized at the same time. High-isolation signal frequency diversity is realized by using a wide-narrow band signal receiving and transmitting channelization technology, effective coding isolation diversity is realized by using coding pulses, and multifunctional signal time diversity is realized based on partial function time division multiplexing. According to the method, a set of broadband hardware system with composite functions is reused, electronic functions required by a radar networking system are achieved through different software, the purpose of software definition functions is achieved, and meanwhile the anti-interference capacity of the networking system is enhanced.