144 results about "Satellite technology" patented technology

The invention discloses an offshore platform emergency control method based on a Beidou satellite system and related equipment, and relates to the technical field of Beidou satellites.The offshore platform emergency control method based on the Beidou satellite system comprises the steps that Beidou satellite time service signals and real-time meteorological data are obtained, the method comprises the following steps: synchronously acquiring structural deformation parameters, marine environment dynamic parameters and personnel positioning information of an offshore platform, and constructing multi-dimensional data of the offshore platform; fusing and analyzing the multidimensional data of the offshore platform, extracting space-time correlation characteristics through a pre-trained dynamic risk prediction model, constructing a multi-factor causal chain, and determining a platform risk level and accident type prediction result; and triggering graded emergency response according to the accident type prediction result, encrypting and transmitting a corresponding early warning instruction to a preset terminal through a Beidou short message, and executing a corresponding emergency control method. According to the invention, risk prediction and emergency response are carried out through the multi-dimensional data of time-space synchronization, so that the offshore platform can carry out timely emergency control.

The invention relates to the technical field of low earth orbit satellites, and discloses a method and equipment for improving the signal-to-noise ratio of a low earth orbit satellite signal, and the method comprises the steps: carrying out the multi-dimensional signal collection and processing of a received signal of a low earth orbit satellite downlink, and obtaining a signal tensor model; executing structured decomposition based on the signal tensor model to obtain a channel factor matrix group; performing multi-stage sequential processing according to the channel factor matrix group to obtain low-orbit satellite channel state information; inputting the low-orbit satellite channel state information into an interference identification module for feature extraction and interference type analysis to obtain an interference type and probability distribution thereof; performing multi-dimensional adaptive filtering on the received signal to obtain a target signal; and performing modulation coding and beam forming parameter joint optimization on the target signal and the low-earth-orbit satellite channel state information to obtain a low-earth-orbit satellite communication link, thereby solving the problem of large fluctuation of the signal-to-noise ratio in a satellite rapid moving scene, and realizing balance of power efficiency and anti-interference performance at the same time.

The invention discloses a power equipment state monitoring method based on Beidou high-precision time service and related equipment, and relates to the technical field of Beidou satellites.The power equipment state monitoring method based on Beidou high-precision time service comprises the steps that Beidou satellite signals are obtained, and real-time ionosphere data are collected; based on the Beidou satellite signal and the ionosphere real-time data, ionosphere delay compensation is carried out according to a preset dynamic compensation model, a high-precision Beidou time service signal is determined, and accurate synchronization of the multi-source data of the power equipment is realized according to the high-precision Beidou time service signal; the method comprises the steps of extracting feature information of real-time operation parameters of power equipment, obtaining global model knowledge of preset edge nodes in combination with a federal learning mechanism, analyzing and judging the state of the power equipment in real time according to a pre-trained lightweight neural network model, and obtaining real-time monitoring information of the health degree of the power equipment, the lightweight neural network model is obtained by performing parameter compression training through channel pruning and quantitative perception training.

The invention discloses a communication satellite multi-beam resource management and control method based on deep reinforcement learning, and belongs to the technical field of satellites. According to the invention, through the multi-agent reinforcement learning algorithm, the allocation strategy of the beam resources can be dynamically adjusted and optimized. A satellite antenna wave hopping technology and a time division multiplexing method are utilized to flexibly cope with changes of ground user requirements and communication flow, so that the overall throughput of a satellite link is remarkably improved. The dynamic optimization mechanism ensures efficient utilization of resources, and improves the transmission rate and quality of a communication system.

The present application discloses a power equipment status monitoring method and related devices based on high-precision Beidou time service, which relates to the technical field of Beidou satellites. The power equipment status monitoring method based on high-precision Beidou time service includes: acquiring Beidou satellite signals and collecting real-time ionospheric data; based on the Beidou satellite signals and the real-time ionospheric data, performing ionospheric delay compensation according to a preset dynamic compensation model to determine a high-precision Beidou time service signal, and realizing precise synchronization of multi-source data of power equipment based on the high-precision Beidou time service signal; extracting characteristic information of real-time operation parameters of power equipment, obtaining global model knowledge of preset edge nodes in combination with a federated learning mechanism, and analyzing and judging the status of power equipment in real time according to a pre-trained lightweight neural network model to obtain real-time monitoring information on the health of power equipment, wherein the lightweight neural network model is obtained through parameter compression training by channel pruning and quantization-aware training.

The invention relates to the technical field of satellites, and discloses a virtualization and distribution-based satellite network simulation method and system, which are applied to a satellite network simulation system, and the system comprises a main node and working nodes; the method comprises the following steps: receiving new satellite group topology information sent by the upstream through the main node; determining a corresponding target instruction through the main node based on a comparison result of the new satellite group topological information and pre-stored historical topological information; executing a corresponding simulation task through the working node based on the obtained target instruction; and updating the current state of the star group through the main node based on the obtained execution result feedback of the simulation task. According to the technical scheme provided by the invention, the construction cost of a simulation environment can be reduced, the network simulation efficiency can be improved, and further, larger-scale satellite network simulation can be borne.

The present invention discloses a method and system for seamless indoor and outdoor positioning based on pseudo-satellite technology. By changing the pseudo-satellite transmitting end into a transceiver system, external satellite signals can be received while positioning indoors, so that indoor positioning and outdoor positioning are combined. The system also adds a reference transmitting end to assist in calculating the outdoor position by obtaining the distance and angle with the indoor target. The present invention can realize flexible indoor and outdoor positioning switching. Since the pseudo-satellite message is highly similar to the satellite in the sky, it does not affect the normal capture of the receiver. Whether the positioning target is indoors or outdoors, the signal can be received normally. Therefore, there is no need to design a special receiver and switch the indoor and outdoor modes. The system technology is simple to implement, and the algorithm is easy to implement and has strong controllability.

The invention discloses a low-orbit satellite communication link switching system based on machine learning, and belongs to the technical field of low-orbit satellites, and the system comprises a data collection module which is configured to collect real-time data of a low-orbit satellite communication link; the data processing module is configured to process the real-time data of the low-orbit satellite communication link; the model training module is configured to predict the quality change of the low-earth-orbit satellite communication link and determine a quality prediction result of the low-earth-orbit satellite communication link; the switching decision module is configured to select an optimal switching opportunity and a target satellite according to the prediction result; and the switching execution module is configured to optimize a low-orbit satellite communication link switching process. The problem that the continuity and stability of satellite communication are low due to the fact that low-orbit satellite communication links cannot be effectively switched based on machine learning in the prior art is solved. According to the invention, accurate prediction of the link state and accurate control of the switching opportunity can be realized, the link switching frequency is reduced, and the communication continuity and stability can be improved.

The invention of system of observation and monitoring the earth warming and changes in polar ice behavior using LoRa to satellite technology is a system for measuring, observing and monitoring weather and environmental conditions in order to determine the effects of environmental conditions and climate changes on the way ice masses change in the polar regions of the earth. This invention is related to the rocket equipped with several modules for measuring the conditions of the surrounding environment as well as data transmission through the LoraWan protocol to a fixed or deployable station. Also, in this invention, if there is a need to calibrate any of the modules in the meteorological rocket, the central server structure, which is equipped with an artificial intelligence analyzer, can calibrate the device by comparing the arrays received from the surrounding rockets and analyzing the data received from these systems.

The invention relates to the technical field of satellite positioning, and discloses an emergency rescue method and system based on satellite positioning, and the method comprises the steps: obtaining the real-time information of a region and the function information of an emergency unit, dispatching a satellite to carry out image collection and signal linkage, analyzing a satellite image and signal data, and constructing an emergency rescue real-time model; a multi-search scheme is formulated according to the model and issued to each emergency rescue unit, search work is executed, the rescue scheme is dynamically adjusted according to feedback information, and a cyclic execution mechanism is formed. According to the method, real-time and accurate data support is provided through the satellite technology, the efficiency, accuracy and strain capacity of emergency rescue are improved, and the rescue efficiency is improved. Rapid and effective disaster area rescue is ensured, and the problem of poor linkage between a satellite and a ground unit in emergency rescue in the prior art is solved.

The embodiment of the invention provides a bridge monitoring satellite data quality control method based on signal-to-noise ratio grid comparison, and belongs to the technical field of satellites. The method comprises the following steps: carrying out pseudo-range single-point positioning calculation according to an observation value file and a broadcast ephemeris file to obtain observation data of each satellite; performing grid division on the satellite sky map according to a preset elevation angle interval and an azimuth angle interval to obtain a standard grid; on the basis of a standard grid, independently stacking observation data of each observation station to obtain a signal-to-noise ratio grid model corresponding to each observation station; performing preferential fusion according to the signal-to-noise ratio grid models of all the observation stations to obtain a high-quality grid model; performing data comparison on the signal-to-noise ratio grid model of each observation station and the high-quality grid model to obtain an available data area of each observation station; and performing quality control on the current observation data according to the available data area to obtain high-quality data. According to the invention, the observation area which is not subjected to interspersed shielding interference can be identified, and data quality control is realized.

The invention discloses a positioning method and device based on low-orbit satellite opportunity signals and a storage medium. Relates to the technical field of satellites. The method comprises the following steps: extracting corresponding signal arrival angle information and Doppler frequency shift information according to an opportunity signal of a low-orbit satellite under a current epoch; determining orbit information of a low-orbit satellite under the current epoch according to a preset satellite two-line orbit data file and a satellite orbit prediction model; under the condition that the number of the low-orbit satellites is not smaller than the preset number of satellites, coarse positioning information of the receiver is generated according to the signal arrival angle information and the orbit information, the coarse positioning information serves as an initial value of iterative solution in the Doppler positioning process for iterative solution, and final positioning information of the receiver is determined; and under the condition that the number of the low-orbit satellites is smaller than the preset number of satellites, calculating final positioning information of the receiver according to the signal arrival angle information, the Doppler frequency shift information and the orbit information.

The invention provides a memory error simulation method and device based on a satellite-borne intelligent computing system, a medium and a simulator, and relates to the technical field of satellites. The method comprises the following steps: inputting a deep learning neural network engine into a deep learning reasoning program of a satellite-borne intelligent computing system; executing a deep learning reasoning program to read a process page table; based on the DRAM standard file, the DRAM mapping file and the address mapping relation, determining a memory active area of the deep learning neural network engine in the virtual memory model; performing construction processing on the memory active area, constructing an error injection space represented in a bitmap tree form, and determining an error information injection position in the error injection space according to particle flipping error model information and a Monte Carlo random algorithm; and performing reverse translation processing on the physical address in the virtual memory model, and determining a target virtual address of the deep learning reasoning process. And a single-particle upset memory error and a multi-particle upset memory error caused by space radiation can be effectively simulated.

The invention generally relates to the technical field of navigation satellites, and provides a satellite navigation message monitoring system based on inter-satellite measurement. The system is configured to perform the following actions: performing inter-satellite ranging on navigation satellites; and monitoring a satellite navigation message according to an inter-satellite distance measurement result, the satellite navigation message comprising ephemeris parameters and clock difference parameters, the step of monitoring the ephemeris parameters comprises the following steps: calculating a first geometric distance between the first satellite and the second satellite at the current moment according to the ephemeris parameters of the first satellite and the second satellite; calculating a second geometric distance between the first satellite and the second satellite at the current moment according to the inter-satellite distance measurement results of the first satellite and the second satellite; and judging the reasonability of the ephemeris parameter at the current moment by comparing the first geometric distance with the second geometric distance.

The invention discloses a GNSS satellite elastic power real-time detection method and system based on multi-frequency data, and belongs to the technical field of global navigation satellites. The method comprises the following steps: acquiring satellite signal carrier-to-noise ratio data, satellite multi-frequency observation data and satellite ephemeris; calculating a satellite power adjustment monitoring index according to the satellite signal carrier-to-noise ratio data, judging whether the satellite power is adjusted or not according to the satellite power adjustment monitoring index and a preset threshold value, and obtaining the satellite power adjustment time when the satellite power is adjusted; calculating MP combined observation values of different observation codes according to the satellite multi-frequency observation data, and judging the type of satellite power adjustment according to the MP combined observation values when the satellite power is adjusted; and when the satellite power is adjusted, calculating the influence range of the satellite power adjustment according to the satellite ephemeris and the satellite power adjustment time.

The invention relates to the technical field of satellites, in particular to a three-super platform actuator eddy current sensor fault autonomous reconstruction method. Comprising the following steps: according to a parallel mechanism kinematics relationship of each actuator, determining a first relationship between axial displacement measured by an actuator eddy current sensor and a load relative to a six-degree-of-freedom pose of a satellite platform; determining a parallel mechanism kinematics relationship of the fault-free eddy current sensor, and determining a second relationship between the axial displacement and the load measured by the fault-free eddy current sensor and the six-degree-of-freedom pose of the satellite platform; according to the first relation and the second relation, matrix reconstruction is carried out on the remaining fault-free actuator eddy current sensors, and an autonomous reconstruction matrix is obtained; and according to the autonomous reconstruction matrix and the measurement of the fault-free actuator eddy current sensor, obtaining all actuator eddy current measurement values of the actuator where the fault eddy current sensor is located. According to the method, when the eddy current sensor has a fault, the eddy current sensor distribution array is reconstructed, and three-super control is recovered.

The present invention relates to the technical field of communications, and provides a 6G space-air-ground-sea integrated fusion architecture based on software-defined cloud-edge collaboration, comprising: three tiers of cloud nodes from low to high: an edge cloud, a space-based cloud, and a core cloud; the edge cloud comprises 6G-enabled ships based on software-defined networking and mobile edge computing technologies; the space-based cloud comprises low earth orbit satellites based on software-defined satellite technology and low earth orbit satellite constellations connected by means of an inter-satellite link; the core cloud comprises a space-based 6G core network; the edge cloud, the space-based cloud, and the core cloud follow a task offloading mechanism and an information feedback mechanism; the task offloading mechanism is configured to select, on the basis of characteristics of a task, a cloud node of a target tier for task processing; and the information feedback mechanism is configured such that the cloud node of the upper tier sends feedback information to a cloud node of the lower tier, so as to optimize task processing of the lower tier. The present invention achieves fast and flexible networking for a 6G space-air-ground-sea integrated fusion network, thereby realizing efficient utilization and collaborative management and control of resources.

The invention relates to the technical field of satellites, and provides a vertical overturning type side plate satellite loading method and device.The device comprises a supporting trolley, an overturning mechanism and a simulated star body structure, the overturning mechanism is arranged on the supporting trolley, a side plate interface adapter plate is arranged on the overturning mechanism, and the simulated star body structure is arranged on the side plate interface adapter plate; the side plate interface adapter plate is used for fixing a simulated docking side plate, the supporting trolley can adjust the height and the pose of the simulated docking side plate, and the turnover mechanism can drive the simulated docking side plate to rotate so as to be precisely docked with the simulated star structure or leave the simulated star structure. According to the invention, accurate butt joint of vertical side turning plates of side plates of satellites of different models can be realized, interference and space interference of products are avoided, and the cable length can be effectively controlled for the side plates with relatively large height dimensions and relatively small width dimensions. And meanwhile, the side plates are overturned and butted, so that the operation risk is effectively reduced, and the workload is greatly reduced.

The present invention discloses a low-orbit satellite communication link switching system based on machine learning, which belongs to the field of low-orbit satellite technology and includes: a data collection module, configured to collect real-time data of low-orbit satellite communication links; a data processing module, configured to process real-time data of low-orbit satellite communication links; a model training module, configured to predict changes in the quality of low-orbit satellite communication links and determine the prediction results of the quality of low-orbit satellite communication links; a switching decision module, configured to select the best switching time and target satellite according to the prediction results; and a switching execution module, configured to optimize the switching process of low-orbit satellite communication links. The present invention solves the problem that the existing low-orbit satellite communication links cannot be effectively switched based on machine learning, resulting in low continuity and stability of satellite communications. The present invention can achieve accurate prediction of link status and precise grasp of switching timing, reduce the number of link switching times, and improve communication continuity and stability.

The invention provides an adjacent satellite adjusting method and device based on satellite damage reconstruction, and relates to the technical field of satellites, whether a target satellite is damaged or not is judged according to telemetry data of the target satellite, and if it is judged that the target satellite is damaged, the adjacent satellite is adjusted according to a preset double-row element and an orbit model. Determining the real-time position data of the target satellite and the real-time position data of the adjacent satellites of the target satellite according to the real-time position data of the target satellite, the double-row element number of the target satellite and the double-row element number of the adjacent satellites of the target satellite; determining a mean anomaly change value required by the adjacent satellite to move from the current position to the target position, updating the number of double rows of the adjacent satellite according to the mean anomaly change value, and adjusting the orbit position of the adjacent satellite based on the updated number of double rows; according to the method, satellite damage reconstruction can be quickly realized at low cost through adjacent satellite adjustment.

A user equipment (UE) performs a public land mobile network (PLMN) scan for a higher priority PLMN, and reports a list of candidates PLMNs based on the scan. An identity of a first one of the candidate PLMNs includes a shared mobile country code (MCC). The shared MCC has a value between 900 and 999 and is also used for performing access with satellite technology. The UE selects the first one of the candidate PLMNs from among the list of candidate PLMNs. Each of the candidate PLMNs has either a mobile country code (MCC) the same as an identity of a serving PLMN or the shared MCC, when the identity of the serving PLMN does not comprise the shared MCC. The selecting is based on the first one of the candidate PLMNs having a higher priority than the serving PLMN.

The embodiment of the invention provides a data processing method and device and electronic equipment, and relates to the technical field of satellites.The method comprises the steps that star sensor data obtained by collecting spacecraft attitude information through a star sensor and gyroscope data obtained by collecting spacecraft attitude information through a gyroscope are obtained and comprise data from the k-n moment to the k moment; carrying out fusion and linear interference filtering processing on the data of the star sensor and the gyroscope at each moment by using Kalman filtering to obtain preliminary prediction data of attitude information, and calculating a first residual value of the data of the star sensor; the star sensor data, the gyroscope data and the first residual value from the k-n moment to the k moment are input into the trained LSTM network, a second residual value of the preliminary prediction data at the k moment is predicted, and the second residual value represents an error of nonlinear interference; and compensating the second residual value to the preliminary prediction data to obtain attitude information of the spacecraft at the moment k. According to the embodiment of the invention, the error of spacecraft attitude information acquisition is reduced.

The multi-body satellite configuration comprises a satellite main body, an auxiliary body and a self-adaptive mechanism between the main body and the auxiliary body, and the forms of the main body, the auxiliary body and the self-adaptive mechanism are variable. The design concept is unique, the satellite main body serves as the core of the whole satellite system and is responsible for bearing main loads and executing main body tasks, and the auxiliary body is flexibly connected with the main body through the self-adaptive mechanism to form a satellite complex with the main body and the auxiliary body capable of moving relatively in space. In the posture adjustment process, the self-adaptive mechanism moves synchronously, and it is ensured that posture adjustment of the auxiliary body basically does not affect the stability of the posture of the main body. The invention aims to break through the limitation of the traditional satellite technology, and is better suitable for the development of multi-load integrated satellites (such as communication and remote control integrated satellites and communication and sensing integrated satellites), so that remote sensing, communication, navigation and inter-satellite communication loads can independently execute respective multi-mode tasks within the same time, and do not interfere with each other.

The application provides a satellite splicing imaging posture maneuver angle error correction method and related device, and relates to the technical field of satellites. A plurality of ground imaging points are acquired, and then actual posture angles of the satellite pointing to each ground imaging point are obtained respectively; and simulation posture angles of the satellite pointing to each ground imaging point obtained by using a satellite simulation tool are obtained respectively. Finally, based on the actual posture angles and the simulation posture angles of each ground imaging point, a posture angle deviation mean value is obtained. In this way, the posture angle error of the collected remote sensing image can be corrected based on the real-time flight state of the satellite using the posture angle deviation mean value, so that deviation of the collected remote sensing image is avoided.

The present invention discloses a method, device, medium, and system for autonomous power consumption optimization of a transit satellite payload. These methods, which pertain to the field of satellite technology, include an autonomous entry / exit decision process, which rapidly determines the entry / exit status of a satellite payload by calculating distance. This process adapts to the impact of changes in orbital altitude after a satellite orbit change. The transit payload autonomously calculates the satellite's exit and entry delays, and, in conjunction with the satellite's energy management unit, enables autonomous shutdown of the transit payload while it is operating outside the country and autonomous startup before entering the country, thus saving energy consumed by the transit payload during standby operation outside the country. The present invention can address the issue of satellite energy shortages and promote satellite development and application.

The invention provides a terminal equipment positioning method and device based on a satellite direct connection network, and relates to the technical field of satellites. The terminal equipment positioning method based on the satellite direct connection network comprises the following steps: acquiring target communication signaling at a plurality of moments from the satellite direct connection network; according to the target communication signaling at the multiple moments, extracting position clues of the terminal equipment at the multiple moments; acquiring track point information of satellites which correspond to the multiple moments and provide satellite direct connection network services; and determining the position information of the terminal equipment according to the position clues at the multiple moments and the track point information of the satellite at the multiple moments. The satellite network can be directly connected through the terminal device, and a terminal device positioning function is provided for a user.

The invention relates to the technical field of power grid mountain fire monitoring and early warning, and provides a power grid mountain fire monitoring and early warning method, system and device based on a satellite technology, which can improve the power grid mountain fire monitoring and early warning efficiency. The method comprises the following steps: preprocessing multiband satellite remote sensing real-time data; based on the preprocessed multi-band satellite remote sensing real-time data, determining a multi-band satellite remote sensing real-time image containing the real-time distribution condition of the mountain fire points; superposing the multiband satellite remote sensing real-time image and the power grid facility distribution map, and determining the power grid facility influenced by the forest fire in real time; and determining an emergency response plan of the power grid facility influenced by the forest fire based on the forest fire point risk level.

The application discloses a stackable aluminum extrusion profile frame satellite structure, and relates to the technical field of aerospace satellites, comprising: at least one stackable sub-frame; each stackable sub-frame comprises: a plurality of L-shaped extrusion forming structures, a plurality of outer wall plates and an inner partition plate; wherein each outer wall plate is composed of a plurality of I-shaped extrusion forming structures; the inner partition plate is composed of a plurality of I-shaped extrusion forming structures; when the stackable sub-frames are multiple, two adjacent stackable sub-frames are modularly stacked by aligning and splicing the upper end and the lower end of the L-shaped extrusion forming structures at the corresponding positions, and the lower end of the L-shaped extrusion forming structure of the upper stackable sub-frame is adaptively connected with the upper end of the L-shaped extrusion forming structure of the lower stackable sub-frame. The application can improve the mechanical bearing performance of the satellite structure, effectively improve the space utilization rate of the launch vehicle fairing, and realize the mixed stacking of satellite structures of different models, thereby meeting the installation requirements of equipment of different sizes.

The invention relates to the technical field of satellites, in particular to a multi-layer solar wing adjusting device suitable for microsatellites, which is characterized in that support plates perpendicular to a mounting surface are symmetrically arranged at two ends of a base, a fixing plate which is orthogonally distributed with the support plates is arranged at the other end of the base, and a coaxial limiting hole is formed in the center of the end surface of each support plate; a shaft hole penetrating through the supporting plate is formed in the center of the bottom face of the limiting hole, the two sets of solar wings are symmetrically arranged on the two sides of the base, each set of solar wings rotatably penetrates through the shaft hole through a rotating shaft, and one end of each rotating shaft extends out of the outer side face of the supporting plate to form a cylindrical transmission shaft. Dynamic tracking of the incident angle of sunlight is realized, and the intelligent control mechanism can ensure that the solar panel always receives sunlight irradiation at the optimal angle.

The utility model discloses a sliding unfolding device for a micro-nano satellite, and relates to the technical field of satellites. According to the technical key points, the satellite comprises a satellite main body, solar wing plates are hinged to the opposite sides of the satellite main body respectively, and elastic driving pieces are arranged at the joints of the solar wing plates and the satellite main body; a telescopic supporting unit is installed in a shell of the satellite body, the top of the supporting unit is connected with a horizontal linkage rod, and the two ends of the horizontal linkage rod are slidably connected with the shell of the satellite body in the vertical direction. The two ends of the horizontal linkage rod are each provided with a clamping head, and the two solar wing plates are each provided with a clamping groove. An adjusting unit capable of controlling the position of the horizontal linkage rod at the top of the supporting unit in the vertical direction is arranged on the upper side of the middle position of the horizontal linkage rod. According to the unfolding device, the solar wing plate can be rapidly unfolded according to needs, and components in a satellite can be effectively prevented from being damaged by high temperature when the unfolding device is used.