809 results about "Submarine" patented technology

The invention discloses a submarine pipeline state early warning method and system based on scour-vibration coupling sensing, and the method comprises the steps: obtaining the historical marine environment information of a target submarine pipeline region, laying a monitoring sensor array according to the historical marine environment information, collecting multi-source monitoring data, and carrying out the preprocessing of the multi-source monitoring data, thereby forming a multi-source monitoring data set. And constructing a multi-physical field coupling analysis model, inputting the data set into the model to analyze the response condition of the pipeline in the current seabed environment, and obtaining pipeline response simulation information. And analyzing resonance influence caused by environmental scouring in different sections, generating resonance derivative characteristics, and constructing pipeline multi-modal fusion characteristics in combination with monitoring data. Predicting the future response state of the pipeline through the submarine pipeline state analysis model, and carrying out risk early warning prompt; meanwhile, the fatigue life of each section is analyzed based on resonance derivative characteristics, fatigue-prone sections are identified, and maintenance suggestions are generated and pushed. Therefore, the accuracy and timeliness of sensing the state of the submarine pipeline are improved, and the early warning intelligence of the submarine pipeline is effectively improved.

The invention discloses a detection method of an ocean magnetic field sensor based on a diamond NV color center. The detection method comprises the following steps: S1, calibrating a base line; s2, alternately measuring fluorescence between two single quantum resonance frequencies, and obtaining a difference to realize DQ reading; s3, three-axis compensation current is adjusted based on closed-loop control, and the NV working point is maintained at zero magnetization bias; s4, obtaining background magnetic field change through digital demodulation and adaptive filtering; and S5, calculating a gradient based on the spatial difference of the multi-point light spots, judging the existence and trajectory of the underwater vehicle in combination with a threshold value and a spectrum matching method, calibrating the threshold value according to the magnetic field characteristics of the existing underwater vehicle, adopting short-time Fourier transform signal spectrum, comparing the threshold value with known submarine characteristic spectrum data, and prompting if the similarity exceeds a set threshold value. According to the detection method, the measurement precision and the anti-interference capability can be improved, and the method is suitable for real-time monitoring of weak magnetic anomalies (such as magnetic moment disturbance of an underwater vehicle).

The invention discloses a submarine topography super-resolution reconstruction method based on window displacement multi-source fusion, and aims to solve the problem of precision attenuation caused by absence of multi-beam truth value evaluation and resolution improvement of an existing neural network submarine topography reconstruction method. The method comprises the following steps of: obtaining gravity anomaly, gravity vertical gradient, vertical line deviation component, submarine topography background and ship survey water depth multi-source data of a target sea area; constructing a residual U-Net attention neural network model, and performing training by taking multi-source data extracted by a 11 * 11 window and position codes as input; moving the trained model sampling window in a staggered manner according to a target resolution step length; extracting data points in the window during movement and injecting position codes; and outputting a high-resolution water depth predicted value based on the position code and the window data. The reconstruction precision is improved by fusing physical quantities, the multi-resolution robustness is guaranteed by a window displacement mechanism, and the medium-frequency feature reconstruction capability is enhanced by a residual U-Net attention model.

The invention relates to a method and system for determining the water content of a safe shutdown boundary of a submarine mixed transportation pipeline, and the method comprises the steps: carrying out a physical property parameter test, and taking the physical property parameter as a multiphase flow simulation input parameter; carrying out submarine pipeline shutdown simulation on the basis of the physical property parameter test data, and obtaining oil section temperatures and spatial distribution characteristics at different water depth positions in the pipeline; carrying out an oil-water layering characteristic experiment under a temperature control condition to obtain an oil-water emulsion layering characteristic; sampling oil sections with different layer heights in the oil-water layering characteristic experiment, and testing the water content and simulating the yield / slip characteristic at the oil section temperature based on the temperature distribution of the oil sections; according to the yield / slip stress of the oil sections with different layer heights, carrying out segmented calculation and weighted accumulation to obtain an overall starting stress; on the basis of the overall starting stress, the safe shutdown boundary moisture content is determined in combination with pressure boundary conditions. The method can effectively guide the safe transportation stopping and restarting of the submarine pipeline, optimizes the replacement operation after the transportation stopping of the submarine pipeline, and improves the operation safety and economy.

The invention discloses a multi-dimensional stealth submarine bionic heterogeneous protective shell and a preparation method thereof, and relates to the technical field of ship and ocean engineering. The submarine bionic heterogeneous protective shell is composed of a sandwich structure and a modified carbon nanotube film; the sandwich structure comprises a bionic Priative multi-stage rotating core layer, a bionic Diamond multi-stage rotating core layer, a bionic octagonal body spiral core layer, a bionic rhombic dodecahedron spiral core layer, a micro-perforated plate and a sound absorption lower plate. According to the design, the Bouligand structure and the acoustic structure principle of the giant bone tongue fish scale are fused, the unique configuration of inter-layer rotation and spiral rising in the microstructure of the giant bone tongue fish scale is used for reference, four bionic structures are innovatively constructed, deformation is effectively restrained, the stability of the overall structure is improved, and through force-sound coupling regulation and control, the mechanical property of the giant bone tongue fish scale is greatly improved. And an innovative solution is provided for achieving the mechanical bearing and sound stealth integrated function of the submarine shell.

The invention discloses a low-cost transportable system for UUV path planning and control experiments. The low-cost transportable system comprises a shore-based unit, a buoy unit, an underwater vehicle unit, a zero-buoyancy cable and a software stack, the UWB tag, the router, the GNSS and the rocker receiver are integrated in the buoy, a sealing waterproof design is adopted, and the buoy can stably float on the water surface and is in wired connection with the underwater vehicle through the zero-buoyancy cable; the three-dimensional position of the underwater vehicle is obtained, the upper computer and the UWB base station are deployed on a shore base, the upper computer interacts the calculated position with the router in the buoy through wireless communication, and a stable and efficient communication link is constructed. The system can be quickly arranged in indoor and outdoor environments, supports closed-loop path planning and control experiments, can effectively replace expensive USBL or indoor dynamic capturing and positioning systems, remarkably reduces experiment cost, and improves experiment flexibility and portability.

The invention discloses a technical scheme of a submarine pipeline health assessment method and system based on multi-state quantity data fusion, and the method comprises the steps: improving the defect classification precision while reducing the dimensionality through dynamic balance global variance retention and local discrimination enhancement; and a solution with high efficiency and robustness is provided for feature fusion and accurate evaluation of the multi-source high-dimensional pipeline data. The submarine pipeline health assessment method comprises the following steps: collecting monitoring data of a sensor in a submarine pipeline, the monitoring data including but not limited to stress strain, acceleration, vibration and temperature in the submarine pipeline; carrying out fusion and dimension reduction processing on the obtained multi-source heterogeneous data, and finding out a mutual relation of changes among parameters of the submarine pipeline in the same time period; calculating a pipeline damage condition coefficient and a repair index according to an analysis result of the multi-source heterogeneous data; and dividing repair grades according to the repair indexes, comprehensively judging the health state of the submarine pipeline, and giving a repair suggestion.

The invention discloses a large-scale underwater vehicle three-dimensional dynamic obstacle avoidance method based on multiple single-beam sonar arrays, and the method comprises the steps: S1, collecting three-dimensional space detection data according to the arrangement of a space array composed of a center sonar and four peripheral sonars, and generating three-dimensional environment perception information; s2, based on the three-dimensional environment perception information, fusing data of an inertial navigation system, a Doppler velocimeter and a depth sensor, and generating real-time attitude and obstacle distribution information of the underwater vehicle; s3, on the basis of the real-time attitude of the underwater vehicle and the obstacle distribution information, risk level assessment and obstacle avoidance path planning are executed, and an obstacle avoidance control instruction is generated; and S4, based on the obstacle avoidance control instruction, controlling a power system of the underwater vehicle to adjust the course, the pitch angle and the speed so as to realize three-dimensional dynamic obstacle avoidance. The problem that a traditional single-beam sonar is insufficient in stereoscopic perception capability is solved, and the defect that the traditional single-beam sonar cannot effectively detect obstacles in the pitch angle direction (such as a submarine abrupt slope and a suspended rock frame) is overcome.

The invention relates to the technical field of submarine topography tracking simulation, in particular to an on-line multi-step prediction topography tracking method for an autonomous underwater vehicle. Comprising the following steps that noise filtering is carried out on a depth value in the AUV navigation process and a height value relative to the seabed through a Kalman filtering algorithm, filtered water depth data are stored in a database, a water depth value at the k + 1 moment is predicted, terrain prediction fitting is carried out through data in the database, and a terrain curve is obtained; after the predicted terrain in front of the AUV is obtained, a correction point is generated based on a normal tracking strategy, the correction point is subjected to dynamic constraint, and a reasonable expected position point is output to the AUV; the motion of the AUV is guided by using the submarine topography, so that the tracking of the submarine topography is realized. According to the method, terrain tracking of the AUV under the unknown seabed condition is realized, and the stability of the AUV in the navigation process is ensured.

The present application relates to the technical field of bubble plume simulation, in particular to a submarine bubble plume imaging simulation platform and a simulation method. The platform comprises a water tank, a plume leakage simulation system, an environment simulation system and a monitoring control system. The plume leakage simulation system comprises a gas generating mechanism, a water flow generating mechanism and a jet device, and the jet device is arranged at the bottom of the water tank. The environment simulation system is arranged in the water tank. The monitoring control system is connected with the plume leakage simulation system and the environment simulation system. The submarine cold spring bubble plume shape and behavior can be simulated, and the corresponding acoustic and optical images can be collected. These data can be used to train a deep learning model to achieve the function of target detection of the plume in a real sea area.

The invention relates to grid laying equipment for immersed tunnel backfilling and an immersed tunnel backfilling method, belongs to the technical field of subsea tunnel construction, and aims to solve the problem that grids are difficult to lay accurately in existing immersed tunnel backfilling construction. The grating laying equipment for immersed tunnel backfilling comprises a first track, a second track, a charging mechanism, a configuration mechanism, a traction mechanism and a fixing device. The two first rails are arranged on the two sides of the immersed tunnel in parallel. The loading mechanism is movably arranged on the first track and is used for loading a grating roll; the configuration mechanism is communicated with the loading mechanism, is used for receiving the grating roll and can adjust the stretching end of the grating roll to the discharge port; the second rail is arranged perpendicular to the first rail and can slide along the first rail; the stretching end of the grid roll is pulled by the pulling mechanism, so that the gravel layer is fully paved with the grid; and the laid grating layer is fixed on the rubble layer by using a fixing device. According to the application, the accurate laying of the grating in the backfill construction of the underwater immersed tube tunnel is realized.

A jacking mechanism of a seabed data center belongs to the technical field of seabed data centers and comprises five jacking structures mounted on a rotating shaft in a large-diameter steel pipe pile, a data cabin is placed on one side of each jacking structure, and each jacking structure comprises a mounting vertical plate; a first winding disc is rotationally mounted on one side of the outer surface of each of the five mounting vertical plates, when the data cabin body needs to be maintained and overhauled, a driving motor corresponding to the data cabin body is started, so that an output shaft of the driving motor drives the first winding disc to rotate, and the first winding disc is connected through a steel cable; therefore, the steel cable can circularly rotate on the outer surfaces of the first winding disc and the second winding disc, the fastening ring can drive the data cabin body to move up and down along with the steel cable, the top of the data cabin body is jacked to the position as high as the working platform, personnel can conveniently enter the data cabin body to carry out maintenance and overhaul, and the purposes of rapid overhaul and convenient operation are achieved. And the problems of high construction risk and high difficulty during maintenance of the conventional submarine data center are solved.

The invention relates to a multi-domain collaborative ocean emergency rescue method, which solves the technical problems of short endurance, small operation range and low recognition accuracy of persons in distress when an unmanned aerial vehicle or an unmanned ship or an underwater robot is adopted to carry out a search and rescue task in the prior art, and combines the unmanned aerial vehicle, the unmanned ship and the underwater robot for mutual cooperation. The unmanned aerial vehicle carries out investigation traversal in the air to find a search and rescue target, the unmanned aerial vehicle gets close to the search and rescue target and sends the position information of the target to the control center, the unmanned ship sails to the position of the target, the at least two underwater robots are transferred along with the unmanned ship, and the unmanned ship controls the at least two underwater robots to work cooperatively. The method can be widely applied to deep ocean emergency rescue, and an'air-sea-submerged 'multi-domain cooperative new normal form is formed.

The invention discloses a submarine observation network power supply system protection method based on traveling wave extreme value time, and relates to the technical field of submarine power grid protection, and the method comprises the steps: determining the layout position of a protection device according to a network structure, a power supply path and node importance, and dividing a system into protection regions defined by adjacent protection devices; voltage signals are collected in real time, first-order differential processing is carried out, and fault occurrence is judged by comparing the voltage change rate with a preset threshold value; recording current traveling wave data before and after the fault and carrying out Gaussian filtering noise reduction; calculating the extreme value time of the traveling wave by using a differential gradient algorithm; comparing the time difference of traveling wave extreme values on two sides of the protection area to judge the fault direction; judging a fault area in combination with the extreme time and a preset threshold value; and when the forward direction criterion and the intra-region criterion are met at the same time, a protection action is triggered. The method has the advantages that high-reliability fault positioning and rapid isolation can still be achieved under the communication failure scene, and the problem of remote fault and high-resistance fault recognition is effectively solved.

The invention discloses an underwater multi-medium refraction parameter calibration method based on a binocular camera, and belongs to the technical field of underwater binocular vision measurement. The method comprises the following steps: firstly, completing Zhang Zhengyou calibration of a binocular camera in the air, and obtaining internal and external parameters and a distortion coefficient; establishing an'air-glass-air 'refraction model, and calculating a normalized incident ray direction by extracting checkerboard angular point pixel coordinates and performing distortion removal; constructing a position relation between a real target plane and a virtual image plane, and solving a normal vector of a refraction interface; combining a ray tracing method to construct a multi-dimensional constraint objective function fusing a physical spacing error, a plane residual error and ray intersection consistency, and adopting a nonlinear optimization method to jointly estimate the glass thickness and the distance from the optical center of the camera to a refraction interface; and finally, expanding to an air-glass-water model to realize high-precision three-dimensional positioning of an underwater target point. The method does not need underwater calibration, and is suitable for scenes of underwater structure detection, submarine topography modeling and the like.

The invention provides a method for improving transient stability of a submarine direct-current power supply system based on frequency compensation. The method comprises the following steps: acquiring a real-time electrical parameter detection item of a first system; based on the first system real-time electrical parameter detection item, judging whether the system load power is within a power range required by a transient stable operation condition; if not, the switching frequency compensation amount of the input-series output-parallel resonant converter sub-module is calculated; based on the switching frequency compensation amount, determining a switching signal of a sub-module switching tube of the input-series output-parallel resonant converter; acquiring a real-time electrical parameter detection item of a second system; based on a second system real-time electrical parameter detection item, judging whether the system load power is within a power range required by a transient stable operation condition; if yes, conventional frequency conversion control is adopted. The technical blank in the field is effectively filled, and the stability of the submarine direct-current power supply system in the transient process is remarkably improved.

The invention discloses a rotary flange underwater sealing butt joint method for a deepwater large-diameter composite pipeline, and belongs to the technical field of submarine pipeline engineering. According to the method, aiming at the problems that a traditional flange joint is insufficient in sealing reliability in a deepwater dynamic environment and lacks a long-term monitoring means, a pressure self-adaptive sealing cavity is formed in a rotating flange disc surface, internal pressure is utilized to enhance sealing specific pressure, and a pressure sensor is integrated to monitor a sealing state in real time; and meanwhile, a pressure sensor interface is reserved to realize long-term data acquisition. The device is mainly used for installation, operation and maintenance of submarine water and oil gas pipelines, and long-term sealing safety of pipeline connectors can be effectively guaranteed.

The invention discloses a submarine image splicing method based on suture line optimization, and the method comprises the steps: carrying out the dual-stage feature extraction of a target submarine image based on an improved ResNet50 network, and obtaining a multi-level feature map containing global structure information and local detail features; respectively carrying out global coarse registration and local fine correction on the second feature map and the first feature map based on a deformable convolutional network to obtain a sub-pixel level aligned deformed image; and carrying out cross-scale feature interaction and dynamic mask optimization on the deformed images based on a cross-image self-attention mechanism, dividing suture line weights between the spliced images, and carrying out pixel classification according to the weights to obtain seamless spliced images. According to the method, semantic fusion is guided through deformable convolution modeling elastic deformation and a self-attention mechanism, sub-pixel-level alignment and seamless splicing are achieved, and the problems of geometric dislocation and suture line artifacts caused by refraction distortion, scattering noise and dynamic deformation in large-parallax submarine image splicing are solved.

The invention provides a ship and ocean engineering structure corrosion fatigue crack propagation rate prediction method based on machine learning. The method comprises the following steps: S1, obtaining all characteristic variables; s2, screening core influence factors from all feature variables through a feature selection algorithm to obtain feature data; s3, establishing a machine learning prediction model which adopts one of a plurality of machine learning algorithms, and inputting the feature data into the machine learning prediction model to learn a nonlinear mapping relationship between corrosion fatigue crack growth rate data and the selected variables, optimizing the machine learning prediction model by using a hyper-parameter optimization method to obtain a trained model; and S4, inputting feature data of a to-be-predicted target into the trained model for prediction to obtain the corrosion fatigue crack growth rate of the to-be-predicted target. The method is suitable for service safety analysis and life evaluation of key facilities such as ships, ocean platforms and submarine pipelines.

The invention provides a self-floating seabed positioning base station, and relates to the technical field of sonar detection, the self-floating seabed positioning base station comprises a base station base and a base station main body, and the base station main body comprises a base station frame, an acoustic module and a buoyancy module. The base station frame is provided with a release assembly used for being connected with a base station base. The acoustic module is fixed at the top of the base station frame; the buoyancy module is arranged on the base station frame; the buoyancy center of the base station body is higher than the gravity center of the base station body; the buoyancy center of the base station main body is higher than the gravity center of the base station main body, so that the release assembly can be overturned in seawater after being separated from the base station base, the acoustic transducer can be overturned to the bottom of the base station main body and is always in the seawater, and the problem that in the prior art, when the base station needs to be recycled or maintained and floats to the sea surface, the acoustic transducer cannot be overturned is solved. The technical problem that the working personnel is difficult to find the floating base station in time due to the fact that the acoustic transducer is separated from seawater and cannot work is solved, and the working personnel can conveniently position the floating base station and recover the floating base station in time.

The invention relates to the technical field of undersea pile foundation scour prevention, and discloses an undersea pile foundation bottom scour prevention reinforcing device and method.The undersea pile foundation bottom scour prevention reinforcing device comprises a base, a clamping mechanism is arranged in the base and used for clamping a pipe pile, and the pipe pile is located on the inner side of the base and can reinforce silt around the pipe pile; according to the device, the foundation pit position of the pipe pile can be filled and buried by utilizing the stone filled during anti-scouring, scouring can be prevented, the silt scoured at other positions can be blocked and intercepted, the surrounding of the pipe pile is further reinforced through the intercepted silt, the whole device is recycled after the pipe pile is removed, and the foundation pit position of the pipe pile can be filled and buried by utilizing the stone filled during anti-scouring; the tubular pile can be clamped and fixed, shaking during penetrating is prevented, the foundation around the tubular pile can be isolated, silt can be isolated, the tubular pile can be prevented from being scoured and taken away, and the tubular pile can be drilled into deeper rock to be fixed.

This application discloses an experimental apparatus and method for measuring the icebreaking load of a submarine surfacing. The experimental apparatus includes a test chamber, an ice block clamp, a moving component, a lifting component, an angle adjustment component, and an observation component. The ice block clamp, moving component, lifting component, and angle adjustment component are all housed inside the test chamber. The ice block clamp is used to fix the ice block; the moving component drives the submarine model to move horizontally; the lifting component drives the submarine model to move vertically; and the angle adjustment component adjusts the pitch angle of the submarine model. The observation component records the forces acting on the submarine model and its surfacing attitude. This experimental apparatus can adjust the position and attitude of the submarine model through the moving component, lifting component, and angle adjustment component, thereby simulating different icebreaking conditions; and records the icebreaking process of the submarine model using force sensors and cameras. This application relates to the field of submarine icebreaking test research.

The invention belongs to the field of submarine pipeline risk early warning, and relates to a submarine oil and gas pipeline burying state identification method based on unsupervised machine learning and 3D Hough transformation. The method comprises three parts of pipeline data acquisition, pipeline point cloud data clustering, and pipeline state detection and identification, wherein the pipeline point cloud data clustering part comprises the following steps: firstly, removing most noise points in point cloud data by using cloth filtering and statistical filtering, and then clustering the point cloud data by using a DBSCAN algorithm of a self-adaptive threshold value; the higher the density is, the higher the class interestingness is. According to the pipeline state detection and identification part, 3D Hough transformation is used for carrying out cylinder and circular truncated cone detection on interest classes, and the exposed state of the pipeline is determined according to different detected results.

The invention provides a cable fault accurate monitoring method, and belongs to the technical field of cable fault monitoring, and the method comprises the following steps: 1, arranging a sensor on the surface of a cable, and carrying out the data collection, 2, carrying out the preprocessing and feature extraction of a collected signal, 3, carrying out the recognition and positioning of a cable fault, and 4, carrying out the recognition and positioning of the cable fault. And step 4, realizing dynamic updating by using edge computing and cloud collaboration. Through multi-modal sensor fusion and intelligent algorithm optimization, a fault positioning error is controlled to be smaller than or equal to 1.8 m in an onshore scene and smaller than or equal to 10 m in a seabed scene, millisecond-level fault recognition and positioning are achieved, the time from fault occurrence to alarm triggering is smaller than or equal to 5 seconds, and the time is more than 100 times faster than that of a traditional method; the false alarm rate is reduced from 87% of a traditional method to less than or equal to 2%, through accurate monitoring and positioning, the manual inspection and troubleshooting time is reduced, and the operation and maintenance cost is reduced by about 40%.

The invention provides a soil body-structure interaction boundary damage quantitative testing device and method, and relates to the technical field of geotechnical engineering test.The soil body-structure interaction boundary damage quantitative testing device comprises a stress conduction boundary shear strength and rigidity combined testing structure and a testing system integrating a shaft confining pressure-temperature collaborative loading system and a monitoring collection and process control system; through an improved slurry sample preparation method, tight connection and constant contact area between the hollow columnar soil sample and the friction pile body are ensured, and the test sealing performance is enhanced through the elastic sealing design; the real-time measurement of the rigidity of different positions in the whole shearing process is realized by virtue of the excitation damage detection element capable of synchronously moving; according to the method, the constitutive model of the marine rock-soil stress conduction boundary domain is perfected, a reliable experimental basis is provided for foundation design of deep-sea engineering such as submarine pipelines and anchoring structures, and the method has important theoretical value and engineering significance for improving design scientificity and safety of deep-sea infrastructures and preventing and controlling submarine geological disasters.

The invention discloses an offshore wind power plant regular layout optimization method considering submarine topography and turbulence intensity, and the method comprises the steps: carrying out the grid discretization of a target region, and defining a layout rotation angle; a mixed integer linear fractional programming model with the minimum leveling cost per kilowatt-hour as the target is constructed, a wake flow model based on an axisymmetric cosine function and a turbulence model based on an axisymmetric double-Gaussian function are comprehensively integrated, and piecewise linearization is conducted on a turbulence nonlinear term; the method comprises the following steps: pre-defining a layout mode and regular layout constraints, and matching with engineering constraints such as fan number, power and safety distance; and a bounded Dinkelbach algorithm is adopted to carry out iterative solution on the sub-problems decomposed according to angles, and a global optimal layout is obtained. According to the method, wake flow loss, turbulence fatigue and terrain-related cost can be effectively and synergistically optimized, and an economical and efficient layout scheme is provided for offshore wind plant planning.

Power cables are provided having a joint with a metallic water barrier and, in particular, metallic water barrier materials for cable joints for use in high voltage cables for both land and submarine applications.

The invention relates to the field of sonar signal processing, and provides an unmanned ship multi-beam sonar detection method, system, device, product and medium, and the method comprises the steps: obtaining a side-scan sonar and a multi-beam sonar, scanning the submarine topography through the side-scan sonar and the multi-beam sonar, and obtaining a multi-beam scanning signal and a side scanning signal; performing Kalman filtering to obtain a first filtering signal, and filtering the first filtering signal through an adaptive filtering threshold to obtain a second filtering signal; constructing a minimization energy function, obtaining an optimized filtering signal through the minimization energy function, and carrying out the iteration of the optimized filtering signal, and obtaining a first terrain signal; constructing a generative adversarial network by using a generator and a discriminator, and performing terrain reconstruction on the first terrain signal through the generative adversarial network to obtain a second terrain signal; and correcting the second topographic signal through sound velocity measurement equipment to obtain a target topographic signal, and constructing an underwater topographic scanning graph according to the target topographic signal.

The invention relates to the technical field of underwater detection, and discloses a seabed sonar image feature enhancement processing method and a storage medium. The method comprises the following steps: acquiring multi-source seabed sonar image data, and performing space-time alignment and signal denoising processing to obtain a standardized sonar data sequence; performing multi-scale feature extraction on the standardized sequence to generate a feature map containing texture, shape and strength information; inputting the characteristic spectrum into a space-time attention network for characteristic weight distribution and fusion, and outputting enhanced characteristic representation; based on the enhanced features, a deep learning model is adopted to carry out resolution improvement and detail recovery, and a high-resolution sonar image is generated; and performing region division on the high-resolution image through an adaptive threshold segmentation algorithm, verifying feature consistency in combination with historical data, and finally completing feature enhancement processing. According to the method, the definition, the detail expressive force and the feature separability of the submarine sonar image are improved, and accurate recognition and analysis of submarine topography and targets are effectively supported.

The invention belongs to the field of monitoring and early warning of submarine optical cables, and particularly relates to a submarine optical cable monitoring and early warning method and system based on data analysis. The method comprises the following steps: obtaining state feature vectors by using a historical signal of each sensing unit and a monitoring signal of an adjacent sensing unit, and initializing each state feature vector into an atomic cluster; the fusion distance between any two atomic clusters is calculated, the combination priority of the two atomic clusters is determined based on the fusion distance and the topological proximity factor, the two atomic clusters with the highest priority are combined repeatedly, and combination is stopped when set conditions are met; and in any new cluster formed after the merging is terminated, if the static anomaly score of the cluster and the dynamic curvature of the mass center motion trail of the cluster exceed respective threshold values, judging that the new cluster is an abnormal event and generating an early warning. According to the invention, early warning can be carried out on physical disturbance generated by various external factors which may cause interruption of the submarine optical cable more accurately and reliably.