39 results about "Airborne Networking" patented technology

The invention provides a network equipment management method based on a software defined network, which comprises the following steps: constructing a switch network comprising an airborne network centralized control management end and airborne equipment, the airborne equipment comprising a master switch, a slave switch and an airborne node computer, the main switch is an airborne device directly connected with the airborne network centralized control management end; a static flow table is configured, the static flow table is stored in all airborne equipment, and the static flow table is used for specifying an MAC address of an airborne network centralized control management end and a cascade port corresponding to each airborne equipment; during power-on, connection between the airborne network centralized control management end and the airborne equipment is established; and at the airborne equipment end, periodically triggering or event triggering network topology discovery, identifying new airborne equipment in the switch network by utilizing the network topology discovery, and checking the operation state of the airborne equipment. By dynamically identifying the airborne equipment, the network topology dynamic management and the plug-and-play function of the airborne equipment can be effectively supported.

The AFDX network protocol fuzzing method of the application is suitable for testing of an airborne network protocol, comprising: S1, taking configurable parameters in the AFDX protocol as input of the test data packet, wherein the configurable parameters comprise virtual link configuration, bandwidth configuration, time scheduling configuration and protocol frame field configuration; S2, calling the test data packet to test the network protocol; S3, sending the test data packet to the tested device through the AFDX network; S4, obtaining the test result of the tested device; and S5, based on the test result, marking the test case causing an abnormal scenario as an effective test case by using artificial or automatic means, thereby improving the test efficiency of the network protocol and related software.

The invention relates to an avionics system optical fiber communication link health management technology, and provides an airborne communication link fault positioning method and system based on an embedded OFDR, and the method comprises the steps: integrating an embedded OFDR function unit in an airborne network switching module, outputting frequency linear scanning continuous wave test light, and dividing the test light into detection light and reference light; the detection light is sequentially injected into each to-be-detected optical fiber link through the switch exchange matrix, and returned backward Rayleigh scattering light is received and interferes with the reference light to generate a beat frequency signal; a Rayleigh scattering distance map is obtained through analog-to-digital conversion and fast Fourier transform and is compared with a pre-stored health reference map in a differential mode, an abnormal event is recognized, and the position of a fault point is accurately positioned. According to the method, on-line monitoring with sub-millimeter resolution and no blind area can be achieved under the conditions of low power and no communication interruption, multi-link automatic polling, fault link switching and maintenance information reporting are supported, and the requirements for high reliability and BIT autonomous diagnosis of an airborne system are met.

The application discloses a kind of comprehensive electronic system 5G hybrid networking performance simulation platform, is set based on the gateway module of 5G communication between 5G communication network module and avionics AFDX network module.Gateway module based on 5G communication is composed of frame format conversion unit (10), priority type setting unit (20), address conversion unit (30) and AFDX network message analysis module (40).Gateway module based on 5G communication one side will 5G protocol information (1) transmission in avionics AFDX network module, the other side will avionics AFDX network module AFDX protocol information (2) restore as 5G network information.5G network message is converted in gateway module, one side can 5G information lossless transmission in avionics AFDX network, the other side can according to network topology and restore avionics AFDX information as 5G network information, to solve the problem that two networks cannot be compatible with each other, provide simulation platform for solving the problem that the size, weight and power consumption of airborne network caused by wired cable in avionics AFDX network.

The invention relates to a secondary looped network system based on airborne equipment, which comprises a primary looped network and a secondary looped network, and is characterized in that the primary looped network comprises a passenger cabin interface unit and a plurality of area control units, and each area control unit is connected with a plurality of passenger service control units to form the secondary looped network; the area control unit determines the logic position of the area control unit in the first-level ring network by collecting the level state of a set port of the area control unit, and generates a corresponding second-level ring network topological graph by summarizing neighbor node information sent by the passenger service control unit in the second-level ring network where the area control unit is located. The airborne network which is high in reliability, easy to maintain and excellent in experience can be effectively achieved, the problems that a traditional airborne network is slow in convergence and complex in maintenance are solved, and expansibility of the system is improved.

The invention provides an airborne network security event processing method, which comprises the following steps of: monitoring a first type of security event by a security log analysis system, carrying out severity diagnosis on the first type of security event, and generating a first isolation control signal when the severity of the first type of security event exceeds a first preset threshold value; monitoring a second type of security events by the airborne network security system, carrying out severity diagnosis on the second type of security events, and generating a second isolation control signal when the severity of the second type of security events exceeds a second preset threshold value; monitoring a third type of security events by the security self-monitoring system, carrying out severity diagnosis on the third type of security events, and generating a third isolation control signal when the severity of the third type of security events exceeds a third preset threshold value; and in response to the control signal, controlling a security switch in the airborne network by the isolation execution system so as to change the connection state of the airborne network and the external network.

The invention discloses an airborne network data integrity receiving system and method based on a time linked list. The system comprises a link state monitoring unit, a data error diagnosis unit, a receiving management unit, a time linked list management unit, a repeated frame judgment unit, a received message time linked list, a management register set and a host interface management unit. The link state monitoring unit and the data error diagnosis unit are sequentially connected to the receiving management unit, the time linked list management unit, the repeated frame judgment unit, the management register group and the received message time linked list are all connected to the receiving management unit, and the management register group is further connected to the host interface management unit; and the time linked list management unit and the repeated frame judgment unit are connected to the received message time linked list. According to the invention, network link state monitoring, data error diagnosis and repeated data frame hardware identification, judgment and integrity receiving functions under a time redundancy mechanism in an airborne complex environment are realized.

The invention provides a test method of airborne network terminal equipment supporting power supply control, which integrates a power supply control unit on the basis of an original test console, an original test unit and an original tested unit of a traditional airborne network terminal equipment test platform, and designs a set of interaction protocol suitable for the test console and the power supply control unit. Automatic testing of the power-on and power-off working scene of the airborne network terminal equipment is achieved, and the automation degree of the airborne network terminal equipment testing platform is improved.

The present invention provides an efficient airborne atmospheric information comprehensive detection and processing system, including: multiple meteorological probe components for acquiring raw meteorological data; an airborne network component for providing an airborne high-speed network interface to achieve high-speed communication and information exchange between airborne components; a meteorological probe interface component connected to the meteorological probe component for converting the interfaces of multiple meteorological probe components into an airborne network interface; a meteorological information comprehensive processing component connected to the airborne network component for receiving raw meteorological data centrally sent from the meteorological probe interface component through the airborne high-speed network interface, and uniformly parsing and processing; a meteorological information display component connected to the meteorological information comprehensive processing component for displaying the parsed raw meteorological data. The present invention realizes efficient detection, processing and intelligent diagnosis of airborne atmospheric information through integrated, modular, networked design, and intelligent health management design.

The invention provides an airborne network layered directional neighbor discovery method based on communication perception integration. The method comprises the following steps: node time synchronization; initializing a node neighbor list; in the initial sensing stage, nodes send ISAC signals through narrow beams in sequence, and potential neighbor distribution information is obtained based on echoes; in the adaptive handshake stage, the node adjusts the beam selection probability and the ACK probability based on the sensing information; the node decides transceiving based on a preset probability; a sending node firstly selects a beam to send a Hello message based on a wide beam probability, and selects a beam based on a narrow beam probability only when all near neighbor nodes are found; and the receiving node selects beam interception based on the wide beam probability, returns an ACK message based on the ACK probability, and does not return an ACK message frame to the discovered neighbor. The method can reduce the message collision probability, accelerates the neighbor discovery speed, and is suitable for the technical field of military aviation communication.

The invention discloses an airborne AFDX (Avionics Full Duplex Switched Ethernet) network switch test architecture design method based on an Ethernet switch, which comprises the following steps of: mutually connecting a port 1 to a port 23 of each to-be-tested AFDX network switch and a port 23 of a multicast link Ethernet switch in pairs to form a set of AFDX network switch test unit; the ports 24 of the two are designed to be communication ports with external equipment; the two parallel data forwarding Ethernet switches are respectively connected with the multiple sets of AFDX network switch test units and the two AFDX simulation cards so as to jointly complete the parallel test of the multiple AFDX network switch products; transforming a data link of the Ethernet switch, transforming a broadcast link structure of the Ethernet switch into a multicast link structure, and setting the multicast link structure into an inter-port isolation mode; the AFDX simulation card 1 is used as a data sending test module and is controlled by a test program to generate a test data flow meeting the requirements of the AFDX network switch; the AFDX simulation card 2 serves as a data monitoring module, receives all AFDX data frames and analyzes and judges the data frames.

This invention discloses a real-time target detection and recognition system and method for UAV imagery. The system adopts an edge-cloud collaborative processing architecture, including an airborne processing unit and a cloud-based collaborative server. The airborne unit is equipped with an adaptive lightweight detection network to perform preliminary detection on real-time imagery and output results with uncertainty scores. An intelligent collaborative gateway filters high-uncertainty targets based on dynamic collaborative thresholds, extracts relevant image regions, and uploads them to the cloud. The cloud server deploys a high-precision model for verification and sends the results back to the airborne unit for fusion, outputting the final detection result. This system achieves a balance between detection accuracy and real-time performance under limited airborne resources through dynamic adjustment of the airborne network structure, bandwidth-based dynamic threshold decision-making, and online model optimization mechanisms based on cloud feedback, thereby improving the robustness and efficiency of UAV target detection in complex scenarios.

According to the TSN end-to-end time delay testing method based on the AS protocol, aiming at a time delay test of an airborne TSN, a TSN end-to-end time delay testing system is established, the TSN end-to-end time delay is calculated through a timestamp in an AS data frame, an ns-level end-to-end time delay result is provided, the accuracy and effectiveness of the TSN end-to-end time delay are ensured, and the TSN end-to-end time delay testing efficiency is improved. The problem of TSN network end-to-end delay test is effectively solved, the accuracy and effectiveness of test data are ensured, and a reference basis is provided for development and test of similar products.

An airborne networked communication system and method for a remote control system includes a first aircraft including a controller and data transmission means for sending and receiving data from and to a plurality of second aircraft; the plurality of second aircraft includes data transmission means, a sensor, and an actuator controlled by the controller of the first aircraft. The data transmission means from the first aircraft to the plurality of second aircraft uses a first dedicated channel or frequency. The data transmission means from the plurality of second aircraft to the first aircraft uses a second dedicated channel or frequency and a different orthogonal code sequence for each second aircraft for the first aircraft to distinguish among the different second aircraft.

The application discloses a kind of simulation flight data determinacy communication demonstration system based on time sensitive network, including by end system and switch form airborne network, demonstration manager and network tester.Demonstration manager is used to set the simulation parameter of end system and switch.Simulation end system has flight simulation application module, interface service module and network driver module;It is the interaction of simulating the flight data stream of real end system in time sensitive network;Through simulating periodic flight data, the flight state synchronization interaction of application layer is simulated, the data frame of data link layer is configured and encapsulated guarantee, and the communication function of simulation end system is simulated.Simulation switch has switching module and TSN protocol configuration module;It is according to scheduling or forwarding logic processing data frame.

This invention discloses an airborne network path planning method based on multi-objective constraints and deep reinforcement learning. The method includes: creating a task set Q containing several tasks q in an airborne network model; constructing a path optimization fusion model that integrates a multi-objective collaborative optimization model and a deep reinforcement learning algorithm network; the deep reinforcement learning algorithm network constructs a task path set based on the start and end nodes of the tasks in the task set Q and selects a subset of task paths that satisfy path risk constraints and task isolation constraints; obtaining the optimal task path combination from the task path subset through a path link balancing module; and using the optimal task path combination as the path planning result for the task set Q. This invention, considering reliable data flow transmission and network load, combines the service attributes of the tasks and plans paths that achieve risk balancing across network links and meet isolation requirements, thereby improving the overall network transmission security of the aircraft avionics system.

Disclosed is a system for countering unmanned aircraft systems (UASs). The system includes on-aircraft components and off-aircraft components. The on-aircraft components include a radio frequency takeover device, a mission computer, and an aircraft networking subsystem. The off-aircraft components include a command-and- control (02) subsystem and a ground networking subsystem. The aircraft networking subsystem and the ground networking subsystem are used to establish a data link, thereby enabling the transmission of data to and from the radio frequency takeover device and the 02 subsystem regarding potential UAS threats. This data may also be used to display information about potential UAS threats on the mission computer. If needed, operators on the ground can initiate a UAS mitigation procedure on the 02 subsystem to be carried out by the radio frequency takeover device aboard the aircraft.

The machine learning-based proxy model may generate a measure of user quality of experience in a vehicle-based communication network in the absence of direct feedback from a user regarding user experience. Once generated, the proxy model may be applied to observed operational parameters of the onboard network to quantify the user experience of any user in any given instance. User experience measurements (e.g., trends in which are identified) may be used to identify and implement adjustments to hardware, firmware, software, and / or service processes associated with implementation of the onboard network. These adjustments may be implemented between traffic of vehicles, or in some cases during traffic of vehicles, to improve user experience during use of the vehicle-based communication network.

The invention discloses a general airborne network short message reliable receiving management system and a general airborne network short message reliable receiving management method. The general airborne network short message reliable receiving management system comprises a host control unit, a receiving management unit, a buffer empty and full judgment unit, a lookup table, a receiving management register set, a receiving buffer area and a backup receiving buffer area, the receiving management unit is connected to the lookup table, the receiving management register group, the receiving buffer area and the backup receiving buffer area through the buffer empty and full judgment unit; the host control unit is connected to the lookup table and the receiving management register group; according to the invention, the buffer management is separated from the division of various message types, the influence of the traditional communication management and software processing method on the system application is eliminated, and the timeliness and reliability of the data acquisition of different types of short messages are improved at the same time.

The present invention provides an airborne software addressing method based on application layer addresses. An airborne ANS server node establishes a coupling relationship with a ground ANS server node, and airborne / ground application software establishes a binding relationship with an airborne / ground proxy node. When the airborne / ground application software initiates a data transmission request, the airborne / ground proxy node initiates an application layer address resolution request, which is then resolved by the airborne / ground ANS server node, feeding back the destination application software routing information to the airborne / ground application software, which then performs data transmission. The present invention uses an application layer address naming mechanism to hide the physical location information of both parties, thereby improving the security of interaction. Furthermore, the application layer address-based addressing mechanism, dynamic registration, and system synchronization mechanism address the issue of airborne network planning updates caused by changing scenarios, enabling anytime, anywhere access and plug-and-play requirements, thereby improving the continuity of interaction.

The invention discloses an airborne network security protection method based on a security gateway, which comprises the following steps: before network data transmission, sending a communication request message to the security gateway by an open domain, after the security gateway receives the communication request message, selecting a group of public keys and private keys from an RSA key configuration table by using a random number algorithm, the security gateway replies a communication response message containing a public key to the open domain, the open domain carries out RSA + DES encryption on the network data according to the public key, the security gateway carries out RSA + DES decryption after receiving the network data, and if the decryption is successful, the network data is transmitted to the aircraft control domain. According to the method, the session key of the DES and the public key / key of the RSA both adopt a random number generation method, and the keys in each communication process are different, so that the attack of hackers can be effectively blocked, and the safety of an airborne network, an airborne system and an airplane is ensured.

A system and method for controlling wireless communication between one or more on-aircraft communication networks, including a wireless cabin network, and a plurality of off-aircraft communication networks. A first communication module is configured for wireless communications with a first off-aircraft network, such as for example a network configured for high altitude communications. A second communication module is configured for wireless communications with a second off-aircraft network, such as for example a network configured for terrestrial communications. Availability of a data link between the second communication module and the second network is determined. When the data link is determined to be available, the second communication module couples one or more of the on-aircraft networks to the second network. When the data link is determined to be not available, the first communication module couples one or more of the on-aircraft networks to the first network.

The invention discloses an ARINC664 terminal system for detecting and reporting network faults in real time, which comprises an ARINC664 terminal and a fault information acquisition upper computer module, the ARINC664 terminal comprises a power supply module, a power supply voltage monitoring module, a power supply temperature monitoring module, a reset circuit module, an AFDX network connection module, an MCU microcontroller subsystem, an FPGA programmable gate array subsystem, a display module, an application program interface module and a high-speed data memory module. According to the invention, power supply voltage monitoring, main control chip monitoring, power supply temperature monitoring, network data packet protocol and data fault detection, fault information summarizing, and real-time display and reporting are carried out. The method can be applied to multiple scenes such as fault monitoring of an avionics system, real-time state monitoring of an airborne network, aircraft ground maintenance and fault node positioning and the like, has high safety, real-time performance, reliability and flexibility, is high in fault monitoring coverage rate, and improves the safety of the avionics system.

The invention discloses a method for slicing and sending end system data, and the invention belongs to airborne network communication technology. Aiming at the requirements of high-security ARI NC664 network data, a method for slicing ARI NC664 network data and a method for sending high-security ARI NC664 network data are formulated, which solves the problems of unnecessary padding or excessive slicing generated when slicing ARI NC664 network data, the problem of insufficient precision of the sending timestamp STS of the high-security ARI NC664 network end system, and the problem of time uncertainty of CRC calculation by relying on the host processor under the non-intelligent end system solution.

The invention discloses a unified airborne network short message receiving system and method based on an annular virtual queue. The system comprises a management register set, a receiving management unit, a shunt controller, a receiving buffer area and the annular virtual queue. The plurality of annular virtual queues and the management register group are connected to a receiving management unit, and the receiving management unit is connected to a plurality of receiving buffer areas through a shunt controller; the general receiving management work of the event message, the emergency message and the sampling message is realized based on the annular virtual queue and a configurable hardware mode. According to the method, efficient storage management based on the annular virtual queue is high in generalization and adaptability, software interfaces are unified, resources can be dynamically optimized, and universal receiving management of different types of messages can be met.

The invention relates to the technical field of airborne network communication, and provides a protocol frame and a data transmission method of an FC integrated Ethernet (FoCE), the protocol frame is a standard Ethernet frame, the load part of the protocol frame comprises an IP data packet, a UDP datagram is packaged in the IP data packet, the effective load of the UDP datagram is a FoCE data unit, and the FCE data unit is used for transmitting data to the FC integrated Ethernet. The FoCE data unit includes a FoCE frame header, a data segment, and an end-to-end check field. The FoCE frame header comprises flow control information used for segmented transmission and recombination of flow messages; the data segment is used as a fragment of the stream message; the end-to-end verification field is used for integrity verification of the data load. The method does not need a switch to support an FC or RoCE protocol, can be compatible with the existing Ethernet infrastructure, remarkably reduces the CPU overhead, improves the throughput rate and deterministic delay, and is suitable for high-performance calculation and storage networks.

The invention discloses a wireless network access system and method in an aviation passenger cabin based on NFC, and belongs to the technical field of aviation, the system comprises an NFC label, an airborne wireless access device and an airborne network authentication server, the NFC label is used for storing network configuration information and an authentication URL containing seat information; the airborne wireless access equipment is used for providing wireless network signal coverage; the passenger terminal interacts with the NFC label to obtain network configuration information and is connected with a wireless network, and after passenger information is input into a popped authentication URL page, an authentication request is sent to the airborne network authentication server; and the airborne network authentication server verifies the legality of the seat information and the passenger information in the authentication request by interacting with the flight real-time information system, and authorizes the passenger terminal to access the Internet after the verification is passed. According to the invention, the problems of ambient light, browser difference and the like can be avoided, and cross-platform non-inductive access experience is realized; the safety is improved, and meanwhile the passenger operation process is greatly simplified.

The invention belongs to the technical field of airborne network communication, and provides an airborne network equipment management method and system based on a hierarchical MAC address, and the method comprises the steps: configuring a 48-bit hierarchical MAC address comprising a plurality of customized semantic fields for each piece of network equipment in an airborne network deployment stage; constructing an access strategy library according to the MAC address; when new network equipment is accessed, identity authentication and access permission matching are carried out according to the semantic field in the hierarchical MAC address and the access strategy library; and the original network performs communication control according to the MAC address and the flow table information, continuously monitors the consistency of the MAC address in the subsequent communication process, and triggers a safety response when the MAC address is abnormal. According to the method, automatic authentication and dynamic authorization of context sensing of the equipment can be realized without depending on a certificate or a secret key, MAC (Media Access Control) counterfeiting and illegal equipment access are effectively prevented, and the method is compatible with an IEEE 802.3 standard and is suitable for a high-safety and high-reliability new-generation airborne network environment.

The invention relates to a time-space-spectrum three-domain collaborative bandwidth prediction method based on a high-dynamic airborne network. The method comprises the following steps: acquiring airborne multi-dimensional original data through a node of a preset airborne network; processing the multi-dimensional original data to obtain three-domain feature data; based on the three-domain feature data, constructing a time-space-spectrum three-domain collaborative prediction model, and performing three-domain prediction; constructing a judgment matrix through an analytic hierarchy process based on the three-domain prediction result, calculating a weight vector of a corresponding domain, performing consistency check, obtaining a weight distribution result, and performing weighted summation to generate a bandwidth prediction value; obtaining a bandwidth allocation scheme through a linear programming algorithm, and updating a flow table based on an SDN controller to obtain differentiated bandwidth resource allocation; and the deviation between the actual bandwidth of the network and the predicted value is monitored in real time, and the bandwidth is adjusted in real time by using a dynamic adjustment mechanism.

Energy distribution device for a land-based, water-based, and / or air-based vehicle, comprising a switching device designed to temporarily divide an on-board network into an island network (10, 10a) and further sub-networks, wherein the island networks (10, 10a) of the temporarily divided on-board network are designed for at least one consumer (6); wherein the island network (10, 10a) has a machine of the vehicle that is designed to operate a consumer (6) of the island network (10, 10a) as a generator; and wherein the switching device is designed to protect the further sub-network from network perturbations caused by the consumer (6).