301 results about "Analog device" patented technology

The invention relates to the technical field of power distribution, in particular to a construction method and system for a digital twinborn model of a power distribution network. Establishing a digital element of the multi-physical field coupling characteristic of the power distribution network equipment based on quantum state space mapping, and simulating a collaborative degradation process of insulation aging and electromagnetic interference of the equipment; constructing a dynamic energy flow entanglement relationship among the nodes of the power distribution network according to the equipment degradation characteristic tensor; based on the quantum entanglement relationship between the device degradation feature tensor and the topology connection hypergraph, establishing a time-space coupling eigenmode of the device multi-physical field state and network energy flow distribution, and generating a quantum topology covariant tensor of a twin model; and carrying out dynamic fusion on real-time characteristic data and the quantum topology covariant tensor to form the digital twin model of the power distribution network. According to the method, the digital twin model capable of accurately reflecting the power distribution network equipment aging and energy transmission spatio-temporal evolution law is constructed, and a high-fidelity simulation platform is provided for power distribution network state evaluation, fault early warning and optimization regulation and control.

The invention discloses a virtual-real combination-based power generation side industrial control system network security target construction method. The method comprises the following steps of: constructing a virtual-real combination target environment consisting of a physical equipment layer and a virtual model layer; the heterogeneous industrial control protocol between the physical equipment layer and the virtual model layer is analyzed, protocol semantic information is extracted, and a bidirectional dynamic mapping rule of a physical equipment state and a virtual model state is generated based on the protocol semantic information; based on a state change event of the physical equipment layer, according to a bidirectional dynamic mapping rule, synchronizing changed equipment state data to the virtual model layer in real time, and simulating protocol behavior logic corresponding to the equipment state data in the virtual model layer according to a security test requirement; and based on the attack instruction or the abnormal state signal generated by the virtual model layer, according to the protocol specification format of the target physical equipment, converting the instruction or the signal into an executable control command, and driving the physical equipment layer to execute an operation corresponding to the control command.

The invention discloses an equipment fault intelligent early warning system based on abnormal voiceprint AI analysis of energy equipment, and relates to the technical field of equipment health management, the equipment fault intelligent early warning system comprises an equipment fault early warning platform, and the equipment fault early warning platform is in communication connection with the following modules: a data sensing fusion module, a voiceprint AI analysis module and a voiceprint AI analysis module; the data acquisition module is used for acquiring high-frequency voiceprint signals, temperature field distribution and vibration data in real time during operation of energy equipment through a distributed sensor network to form a comprehensive data set; and the voiceprint AI analysis module is used for extracting voiceprint features from the comprehensive data set, and identifying whether the equipment emits abnormal voiceprints or not by using a pre-trained voiceprint AI model. According to the method, early abnormity is identified through the high-precision AI model, sudden equipment faults are effectively prevented, equipment physical field interaction is simulated in combination with the digital twin technology, and a fault evolution path is dynamically deduced, so that operation and maintenance personnel can take intervention measures at the initial stage of the faults, the stability and reliability of equipment operation are remarkably improved, and the non-planned downtime is shortened.

The invention discloses a digital twinning-based thermal heat supply system defense cooperative protection method and system, particularly relates to the technical field of industrial control system safety, and is used for solving the problems of hidden attack missing detection and response delay caused by splitting of energy flow and data flow in an existing protection mechanism. Physical-network behavior collaborative verification is realized by constructing a digital twinborn model, and precise protection is realized by quantifying coupling failure characteristics of energy flow and instruction flow. The method specifically comprises the following steps: collecting production data, industrial control logs and network traffic; constructing a digital twin model to simulate expected behaviors of equipment, communication and physical states; comparing and detecting abnormal data in real time; extracting a thermodynamic potential gradient characteristic quantity and a path integral characteristic quantity from the abnormal data; calculating a covariant difference value of the two characteristic quantities, and judging an external attack when the covariant difference value exceeds a threshold value; when an attack is triggered, a micro-isolation gateway is deployed, dynamic access control is implemented based on an equipment fingerprint, a user behavior sequence and an environment fingerprint, and an attack chain is blocked.

The invention provides a heat dissipation performance test system and method, and a storage medium, which can be applied to the technical field of equipment performance test. The heat dissipation performance test system comprises a heating element which is used for simulating the operation heating state of equipment; the liquid cooling device comprises a liquid cooling circulation pipeline and an adjusting structure installed in the liquid cooling circulation pipeline, and a heating element is installed in the liquid cooling circulation pipeline; the controller is used for changing the operation state of the adjusting structure so as to adjust the flow of the cooling liquid in the liquid cooling circulation pipeline and realize heat dissipation of the heating element; the processor is used for executing the following operations: acquiring N groups of basic data corresponding to N moments in the heat dissipation process of the heating element; based on the N groups of basic data, calculating to obtain M groups of heat dissipation performance data corresponding to the M different heat dissipation duration intervals; and based on the M groups of heat dissipation performance data, determining an equipment heat dissipation performance test result of the liquid cooling device, where M and N are integers greater than 1.

The invention discloses a coal machine equipment production operation management system based on digital twinning, and relates to the technical field of coal machine equipment production management, and the system comprises a plurality of sensors which are used for collecting the operation data of coal machine equipment in real time; the data acquisition module is used for transmitting the equipment operation data acquired by the sensor to the cloud platform in real time; the cloud platform is used for comprehensively analyzing the equipment data through a data analysis and processing module, generating a digital twin model corresponding to the equipment, updating the model in real time and providing equipment state monitoring, fault early warning and health assessment functions; and the digital model module is used for updating a digital twin model of the equipment in real time, the model comprises a geometric model, a physical model and a behavior model of the equipment, and the operation state of the equipment can be simulated and performance analysis can be carried out. By introducing the digital twinning technology, the production management level of coal machine equipment is remarkably improved, and an efficient, intelligent and sustainable solution is provided for the coal mine industry.

The invention relates to the technical field of digital control, in particular to a digital control system and method. The method comprises the following steps: acquiring an industrial equipment object and constructing a simulation model based on the industrial equipment object so as to simulate the running state of the equipment and acquire corresponding simulation data; analyzing the transient current surge phenomenon of the equipment according to the simulation data, and further analyzing the multi-dimensional interactive aging trend of the equipment, so as to estimate the attenuation condition of the dynamic precision of the equipment; estimating the equipment fault risk through the equipment dynamic precision attenuation data, and estimating the quality attenuation state of the industrial product according to the fault risk; the system transmits fault risk and product quality attenuation data to a digital control system, carries out equipment abnormity early warning through the system, and adjusts equipment parameters according to an early warning result. According to the invention, the industrial equipment is digitally controlled, so that the operation efficiency of the industrial equipment is higher.

The invention relates to the technical field of digital twinning, in particular to a digital twinning monitoring system for a precision servo press production line, which comprises a physical production line module, an edge calculation module, a cloud digital twinning module and a visual monitoring module, wherein the physical production line module is used for monitoring and collecting production line data in real time; the edge calculation module preprocesses and analyzes the collected original data, judges product defects, equipment faults and employee abnormal states in real time to trigger edge early warning, and outputs a multi-dimensional data set; the cloud digital twinborn module is used for constructing a digital twinborn body, establishing a real-time coupling simulation model fusing electromagnetism, heat, force and sound to simulate the internal physical process of equipment in real time, predicting the performance change and potential fault of the equipment, positioning the fault root cause and predicting the residual life; and the visual monitoring module is used for carrying out multi-dimensional visual presentation and providing decision support. Therefore, the problems of insufficient production line staff monitoring, single physical field monitoring, lack of fault predictability and the like are solved.

The invention provides a space cable plane suspension bridge empty cable shape monitoring system comprising a plurality of data acquisition devices used for acquiring target data in a space cable plane suspension bridge empty cable state; the first empty cable state determination device is used for determining a first empty cable state according to the target data acquired by the plurality of data acquisition devices; the second empty cable state simulation equipment is used for simulating and determining a second empty cable state of the space cable plane suspension bridge meeting the construction standard; and the key point monitoring equipment is used for monitoring each key point of the first empty cable state by referring to the second empty cable state, and outputting a key point adjustment strategy. According to the system, the change difference problem of the space cable plane suspension bridge in different stages is considered, the second empty cable state is simulated, the first empty cable state and the second empty cable state are compared, the key point is determined, and the adjustment strategy is output, so that the construction accuracy and safety are improved, the construction control process is optimized, and the construction efficiency is improved. And finally, the overall performance and the construction quality of the bridge are improved.

The invention discloses reservoir underground pore connectivity transformation simulation equipment, a reservoir underground pore connectivity transformation simulation system and an evaluation method. The equipment comprises a rock core transformation clamping device, a first magnet, a second magnet, a nuclear magnetic resonance signal controller, a storage and collection tank and a fluid displacement device, wherein a magnetic induction coil is arranged in the rock core transformation clamping device, and the first magnet and the second magnet are oppositely arranged on the two sides of the rock core transformation clamping device; the nuclear magnetic resonance signal controller is electrically connected with the first magnet, the second magnet and the magnetic induction coil respectively and is used for controlling the magnetic field intensity formed by the first magnet, the second magnet and the magnetic induction coil and measuring a nuclear magnetic signal of a rock core sample in the rock core transformation clamping device; the rock core modification clamping device comprises a fluid inlet, the fluid inlet is communicated with the storage and collection tank, and the fluid displacement device is connected with the storage and collection tank, so that fluid is displaced into the rock core modification clamping device under the action of the fluid displacement device, and modification and evaluation on the pore connectivity of the rock core sample under different fluid pressures are realized.

The invention discloses a new energy power equipment fault detection system based on digital twinning, and relates to the technical field of new energy power, and the system comprises an equipment management center which is in communication connection with the following modules: a digital modeling module which is used for constructing a three-dimensional digital model of new energy power equipment, multiple physical fields during equipment operation are fused, and a coupled digital twinborn model is constructed; and the data interaction mapping module is used for communicating the physical equipment and the coupling digital twin model. According to the method, the high-precision three-dimensional dynamic model is constructed, the multi-physics field is fused to establish the coupled digital twinborn model, the operation state of the equipment is mapped in real time, dynamic responses of the equipment under different working conditions can be simulated, the limitation that a traditional threshold value method is difficult to adapt to dynamic operation characteristics is overcome, and through multi-physics field coupling simulation, the dynamic performance of the equipment is improved. The internal physical change process of the equipment can be accurately captured, the fault positioning precision and the reliability of a detection result are remarkably improved, and false alarm and missing alarm are reduced.

The invention belongs to the technical field of wearable electronic products, and discloses impact simulation equipment and an impact test method. The impact simulation equipment comprises an impact table and a release device, the release device comprises a workbench frame, a rotating shaft, a connecting assembly and a swing rod, the connecting assembly comprises a shaft fork and a vertical shaft arranged on the shaft fork, the rotating shaft is rotatably arranged on the workbench frame, the shaft fork can rotate around the axis of the vertical shaft, the vertical shaft is vertically connected to the rotating shaft, and the swing rod is arranged on the shaft fork. A tested product can be fixed on the swing rod, the swing rod can rotate around the axis of the swing rod for adjustment, and the swing rod can rotate around the axis of the rotating shaft under the action of gravity to drive the tested product to collide with the collision table. According to the impact simulation equipment, the tested product is adjusted by rotating or rotating the swing rod, so that the tested product can impact the impact table at any position and angle, the impact between the tested product and the ground can be accurately simulated when a user dynamically falls down, and the test accuracy and reliability are greatly improved.

The invention provides a test system for prototype verification of a PCIE Switch switch chip. The system comprises an FPGA assembly, RC simulation equipment, EP simulation equipment and monitoring analysis equipment. In the application, the FPGA component integrates the tested component PCIE Switch and the test auxiliary component, supports hardware-level reconfiguration, can simulate topology and abnormal scenes of any RC device or EP device on the same platform, and does not need to replace physical hardware. Compared with an existing test system which depends on serial port log output faults, the method has the advantages that the error state is captured through FPGA hard logic, nanosecond fault tracing is achieved, and the test efficiency can be effectively improved. Besides, RC simulation equipment defines a test program through software, dynamically generates flow (such as normal / abnormal messages), and can replace physical RC equipment; the EP simulation device can respond to the test flow in real time, and can support multi-protocol version compatibility verification. Automatic testing of prototype verification of the PCIE Switch chip can be achieved through the monitoring and analyzing device, manual intervention is not needed, and input of testing manpower can be reduced.

The invention relates to a scheduling operation ticket execution process monitoring method based on a digital twinning technology, and belongs to the field of power system detection. Comprising the following steps: acquiring a step sequence and logic association from an operation order, analyzing to generate a data set, and constructing a logic dependency graph and a digital twinborn instance; analyzing the matching degree of the step precondition and the real-time state, identifying a failure step and generating alarm information; querying an equipment interaction record, and extracting a dynamic change factor list causing state conflicts; analyzing in combination with a logic dependency graph to obtain influence weights of subsequent steps, and identifying high-risk steps; calling digital twin examples to simulate equipment state evolution, and evaluating potential chain reaction risks; adjusting an operation order step sequence according to the protection device triggering probability, and generating a scheduling instruction set meeting a real-time state; monitoring deviation in real time and generating a dynamic correction instruction; and verifying the correction instruction and generating an operation order scheme. The intelligent level and safety of scheduling operation order execution are improved, and power grid accidents caused by misoperation are effectively prevented.

A measurement and control simulation device based on a measurement and control data transmission integrated system comprises an upper computer display control test module, a PC host module, a signal processing master controller module, an isolation DC / DC module, a down-conversion module, a filtering module, an isolator module and an outer end face interface module. The system has the characteristics of multiple modulation systems, a spread spectrum function, controllable output power, Doppler frequency change and the like, can be used for simulating a star chain control system link test in a ground test system, and fully improves the index assessment performance during system docking; meanwhile, the design of a down-conversion link meets the requirements for the strength and sensitivity of the received signal, the stability and accuracy of the radio-frequency signal after frequency conversion in a low-power injection state are remarkably improved, and a new scheme is provided for a high-frequency conversion mode. Besides, the display control module of the equipment has the functions of multiplexing, reconstruction, multi-data interaction and the like, so that multifunctional and multi-task full-system test coverage can be realized, the cost investment of test systems such as spacecrafts and the like is greatly reduced, and the multifunctional index test coverage efficiency is improved.

The invention discloses a power supply test method for simulating an equipment load and electronic equipment, and relates to the technical field of electronics, and the method comprises the steps: transmitting test current information to a first control part through a management controller, the test current information being used for indicating a to-be-simulated specified load current of a first load module; according to the specified load current, the first control part controls the first load module to carry out current pumping on a power supply of the first load module; voltage data of the power supply of the first load module and current data of the power supply of the first load module are obtained through the first control part, and a first test result is obtained. The technical problem of insufficient accuracy and comprehensiveness of the power supply test method of the equipment load in the related technology is solved, and the technical effect of improving the accuracy and comprehensiveness of the power supply test method of the equipment load is achieved.

The invention belongs to the technical field of wearable electronic products, and discloses impact simulation equipment and an impact test method. The impact simulation equipment comprises a bearing device and a releasing device, the bearing device comprises a rotating table, and the rotating table can rotate around the axis of the rotating table; the releasing device comprises a rotating shaft and a swing rod which are connected with each other, the swing rod and the rotating shaft form an included angle, a tested product can be fixed on the swing rod, and the swing rod can rotate around the axis of the swing rod for adjustment; and the oscillating rod can rotate around the axis of the rotating shaft under the action of gravity to drive the tested product on the oscillating rod to collide with the rotating table. According to the impact simulation equipment, the tested product can be adjusted by rotating or rotating the swing rod, so that the tested product can impact the rotating table at any position and angle; therefore, the impact test method can accurately and effectively simulate the impact process of the tested product and the ground when the user dynamically falls down, and the test accuracy and reliability are greatly improved.

The invention discloses a transformer substation secondary system modeling method and related equipment, and relates to the field of power system modeling.The method comprises the steps that firstly, feature information, hierarchical relations and connection relations of electrical elements are extracted from a transformer substation secondary system configuration file, and the system structure is comprehensively mastered; generating a historical information time sequence in combination with historical information of the transformer substation; then respectively mining a time influence factor and a space influence factor by using a long short-term memory network and a multiple regression model; and finally, establishing a global simulation model based on a digital twinning technology. According to the scheme, equipment operation data is deeply mined, and the data integration problem is solved; the space-time dimension is fully considered, and the equipment state is accurately simulated; information delay is reduced by means of a real-time data mechanism, and virtual-real synchronization is guaranteed; model lightweight and compatibility are achieved, and the multi-scene requirement is met. Therefore, active operation and maintenance decision is achieved, and the operation and maintenance efficiency and safety of the substation are remarkably improved.

The invention discloses a coal mining equipment state sensing method based on large model and digital twinning, which relates to the technical field of state sensing, and comprises the following steps: inputting a multi-modal data set into a quantum convolution encoder, carrying out feature compression through a quantum state superposition principle, selecting key feature fragments by utilizing an attention gating mechanism, and carrying out feature compression on the key feature fragments; generating a multi-scale digital twin of the device; according to the multi-scale digital twins, a space-time diagram Transform network is used for establishing a dynamic correlation model between equipment parts, the interaction intensity between the parts is quantified through a diagram attention mechanism, the equipment state evolution process is described through a neural differential equation, and an equipment state evolution model is obtained; combining the equipment state evolution model with the generative adversarial network, and simulating an equipment degradation path through a generator; according to the method, key dynamic fragments are adaptively screened through an attention gating mechanism, the classic convolution serial bottleneck and fixed attention rule limitation are broken through, exponential-level dimension reduction is achieved, and a degeneration-related space-time mode is accurately captured.

A method comprising obtaining (611) video data comprising meta-data representative of a level of reliability of a neural network inference process implemented by an analog device, the neural network inference process being applied to decode the video data, an analog device being an electronic circuitry unable to ensure a repeatability of an output result of said electronic circuitry when said electronic circuitry receives same input data; and, decoding (612) the video data, the implementation of the neural network inference process by the analog device depending on the metadata.

The invention discloses an intelligent voice-based overcharge equipment digital twinborn intelligent fault diagnosis operation and maintenance system, which comprises a voice query module, a first vector module, a diagnosis request module, a fault diagnosis module, a second query vector for defining a fault diagnosis request at a current time point as a pre-constructed fault prediction model, and a voice processing module, outputting a multi-task fault label of the overcharge equipment in rated time; the operation and maintenance strategy module is used for defining an operation and maintenance strategy of the overcharge equipment according to the multi-task fault tag; according to the method, the digital twinborn model is adopted to simulate the physical characteristics and the operation state of the equipment, so that the system can still generate high-quality training data under the condition that real data is insufficient or missing, and in combination with the time sequence prediction model, the historical data of the sensor and the operation data generated by digital twinborn simulation can be utilized in the training process, so that the training efficiency is improved. And the fault prediction capability of the model under a complex working condition is improved.

The invention discloses an oil well multiphase produced medium flow metering model establishing system and a metering method. An oil well multiphase medium extraction simulation device of the system is used for simulating throttling pressure difference signals and temperature drop amplitude before and after a gas phase and a liquid phase of different flow combinations are mixed and pass through an oil nozzle, and an experimental data set is obtained; the metering model building module is used for building a gas phase mass content calculation model and a total mass flow calculation model based on the experimental data set, and the gas phase mass content calculation model is used for representing the relation among the throttling pressure difference standard deviation before and after the oil nozzle, the temperature drop amplitude and the gas phase mass content; the total mass flow calculation model is used for representing the relation among the throttling pressure difference before and after the oil nozzle, the gas phase mass content and the total mass flow. The model established by using the system can accurately and conveniently meter the oil well multiphase produced medium, is wide in application range, and is still suitable for metering the oil well multiphase produced medium under complex working conditions such as high gas-liquid ratio; the ground process flow is simple, and the metering cost is low.

The invention discloses a networking test system and method for laser communication between low-orbit star groups, and belongs to the technical field of satellite communication, the networking test system comprises a satellite attitude simulation device, a light beam far-field characteristic simulation device and a ground side simulation device, and the satellite attitude simulation device is used for simulating the orbit, attitude and vibration change of a satellite platform in a satellite laser link; the light beam far-field characteristic simulation equipment is used for simulating the distribution state and attenuation dynamic change of the laser beams in the inter-satellite laser link of the low-orbit satellite group after long-distance transmission according to the laser signal; and the ground side simulation equipment is used for receiving the orbit, attitude and vibration change data of the satellite platform and the distribution state and attenuation dynamic change data of the laser beams after long-distance transmission, and cooperates with the laser communication terminal to complete the performance test of the inter-satellite laser communication networking of the low-orbit satellite group. According to the invention, a one-to-many low-orbit satellite group inter-satellite laser communication link performance test and a low-orbit satellite group inter-satellite multi-node laser communication networking performance test can be supported.

The invention discloses a test method and device of a charging pile and electronic equipment, and relates to the technical field of new energy, and the method comprises the steps: switching the charging pile to a working state, adjusting the input / output voltage, frequency, harmonic wave, inter-harmonic wave and three-phase voltage unbalance degree parameters through simulation equipment, and calculating the unbalance degree of the charging pile according to the input / output voltage, frequency, harmonic wave, inter-harmonic wave and three-phase voltage unbalance degree parameters; simulating different operating environments of the power grid and the new energy automobile, performing charging / discharging test on the charging pile, and collecting test data; the adaptability of the charging pile in different operation environments is evaluated through test data; the testing device of the charging pile comprises a testing unit and a determining unit which are respectively used for executing the testing process and the testing result determining process. The electronic equipment executes the test method through the processor and the memory to realize comprehensive evaluation of the performance of the charging pile. According to the invention, the technical problem of low test accuracy of the charging pile in the prior art is solved.

The invention relates to a detection device and method for simulating excitation phase voltage of metal particles in GIS (Gas Insulated Switchgear) equipment, and the device comprises an element cavity, a vibration applying mechanism, a vibration detection mechanism and a voltage phase oscilloscope, the vibration detection mechanism measures a mechanical vibration signal of the element cavity and converts the mechanical vibration signal into an electric signal; and the voltage phase oscilloscope displays the voltage phase at the excitation moment of the metal particles. According to the device, the amplitude and action time of mechanical vibration are accurately controlled through the vibration applying mechanism, and the dynamic vibration environment of actual operation of GIS equipment is simulated; meanwhile, the vibration detection mechanism is combined with an external trigger mode of a voltage phase oscilloscope, millisecond-level synchronous capture of the moment of vibration excitation of metal particles and an alternating current voltage phase is achieved, excitation phase data of the metal particles can be accurately obtained, and the association rule of the initial charge quantity and the motion trail of the metal particles is deeply analyzed. And positioning of insulation weak points of the GIS equipment and optimization of a protection strategy are guided.

Network subscriber devices simulate peer devices via virtual models displayed within a real-time capture of a physical environment, as an extended reality (XR) experience for users. Immersion of the XR experience is enhanced based on layering the virtual model of a simulated device in relation to digits of a user included within the real-time capture, thus appearing like the user is holding the simulated device. The digits of the user that are layered above the virtual model can be tracked such that the user can move these digits to make virtual inputs to the simulated device that can cause virtual display content shown with the virtual model to change. Device specification information is also shown within the XR experience. Via the XR experience, network subscribers can be better informed on devices available for use on a telecommunication network and can immediately acquire devices being simulated within the XR experience.

A networking device, system, and method of operating a networking device are provided. The illustrative networking device is disclosed to include one or more physical ports, an emulated switch positioned between the one or more physical ports and a host device, and one or more emulated devices positioned between the emulated switch and the one or more physical ports. The one or more emulated devices may be configured to populate the one or more physical ports.

The invention discloses an automatic simulation method for a single event effect of a bipolar band-gap reference circuit, which comprises the following steps of: S1, analyzing a circuit netlist file, and extracting transistor names and node information; s2, performing direct-current characteristic simulation on the circuit to obtain a direct-current working point of each transistor, and determining the type of each transistor; s3, establishing a transistor model, and performing transistor-level single event effect simulation to obtain a transistor-level single event effect simulation result; s4, establishing a transient pulse waveform database and a peak value database; s5, screening to obtain a sensitive transistor; s6, selecting one sensitive transistor, and extracting transient pulse data corresponding to the sensitive transistor; s7, modifying the circuit netlist file, and performing circuit-level single-particle transient characteristic simulation to obtain transient characteristic simulation result data; and S8, repeating the steps S6 to S7 to obtain transient characteristic simulation result data corresponding to all the sensitive transistors. According to the invention, the weak link of the simulation device effect is positioned.

The invention discloses a digital baseband processing method and device for a very high frequency omnidirectional beacon signal and a receiver, and relates to the technical field of signal processing, and the technical scheme is characterized in that the method comprises the following steps: carrying out AM demodulation on a VOR baseband signal to obtain a VOR envelope signal; processing the VOR envelope signal through band-pass filters BPF1, BPF2 and BPF3 to obtain a variable phase signal, a first reference phase signal, Morse code audio and air-ground communication voice; performing FM demodulation on the first reference phase signal to obtain a second reference phase signal; and carrying out amplitude normalization on the variable phase signal and the second reference phase signal, then carrying out Ref-Var phase discrimination to obtain a phase difference between the two signals, and converting the phase difference into an azimuth angle of the aircraft. By adopting the digital design, the use of analog devices is reduced, the system integration level is increased, higher angle measurement precision can be obtained, and the navigation performance required by civil aviation area navigation can be better met.

The invention discloses a multi-node dynamic power line channel simulation system, which is applied to the technical field of power line communication and is used for solving the problem of limited authenticity and adaptability of power line channel simulation in the prior art. In the on-site power grid end channel characteristic acquisition system, a first power line channel characteristic acquisition device periodically sends an original excitation signal through an excitation signal sending module, and a second power line channel characteristic acquisition device receives the original excitation signal through an excitation signal receiving module. Collecting a current filter coefficient of the first filter when the original excitation signal is received each time, and transmitting the current filter coefficient to the communication simulation equipment; in the laboratory end communication simulation system, communication simulation equipment configures a current filter coefficient to a corresponding second filter for communication simulation, so that dynamic capture of channel characteristics changing along with changes of external factors such as air temperature and load is realized through periodic excitation signal transceiving and filter coefficient training acquisition; and the authenticity and adaptability of the power line channel during communication simulation are improved.