7 results about "Surface dynamics" patented technology

The invention discloses a real-time sea clutter simulation method based on a physical neural network, belongs to the field of sea clutter simulation, and particularly relates to a real-time sea clutter simulation method. The invention aims to solve the problems of poor real-time performance and long time consumption of the existing sea clutter simulation method. The method comprises the following steps: S1, initializing parameters and simulation; s2, numerical simulation of sea surface dynamics is realized according to a shallow water equation, and the obtained sea surface height field changing along with time, the flow velocity of the sea surface height field in the axial direction and the flow velocity of the sea surface height field in the axial direction are periodically stored; s3, constructing a physical neural network; s4, obtaining a trained physical neural network; s5, inputting the space coordinate and the time coordinate of the real-time sea clutter to be measured into the trained physical neural network, and outputting the sum; generating a real-time file in an STL format; and S6, obtaining sea clutter data by using the open source library.

This application relates to a marine vortex SAR imaging simulation method, comprising: acquiring marine environmental data of a target marine vortex region; generating a first geostrophic velocity field based on the sea surface dynamic height data, and generating a second geostrophic velocity field based on the three-dimensional temperature data and three-dimensional salinity data; performing a weighted summation of the first and second geostrophic velocity fields according to their respective weight values ​​to generate a composite geostrophic field corresponding to the target marine vortex region; and performing SAR simulation imaging on the target marine vortex region based on the composite geostrophic field to obtain a simulated SAR image of the target marine vortex region. Based on the above method, the problem of unclear details due to resolution limitations in sea surface dynamic height data can be improved; and the characteristics of vortices can be more fully represented, increasing the imaging effect of SAR in marine vortex imaging simulation applications.

The invention relates to the field of hydropower station plant design methods, in particular to a hydropower station plant flooding accident scene construction method and system, and the method comprises the steps: carrying out the three-dimensional modeling of a hydropower station plant, and storing the plant flooding accident scene in a classified manner to obtain a scene database; an adjacent coupling mechanism is added between the elements of the accident scenes in each aspect, and a spanning coupling mechanism is added between the elements of every two accident scenes; when the flooding process is simulated, a CFD model is established to simulate a water flow invasion path and the flooding process in the flooding process, the dynamic state of the free liquid level is tracked through a VOF method, and the flow velocity, the water depth and the pressure distribution are analyzed; and operating and outputting result data of plant flooding. According to the method, the situation that the factory building is flooded is more complete and comprehensive, and the simulation result is more accurate.

The invention discloses an exploration method based on geological deep soil texture, and particularly relates to the technical field of address exploration, historical drilling data, remote sensing image data and geological radar profile data are fused, a geological stability response grid is generated, a surface dynamic load path is collected in combination with a construction plan, and a surface vibration risk area is identified; checking and adjusting an initial drilling point layout scheme through cross analysis; a disturbance response index is predicted based on geological physical parameter fluctuation, a drilling sequence is optimized to form a minimum interference path, real-time feedback correction is carried out in the drilling process, and the data precision and the geological structure stability control effect are improved; according to the method, by constructing the geological stability response grid and fusing the dynamic load path, the disturbance sensitive area is accurately identified, the drilling point location and sequence are dynamically optimized, the layout of the structure high-risk area is avoided, the drilling disturbance intensity is controlled, the targets of drilling path interference minimization and high stability are achieved, and the precision and safety of geological exploration are improved.

The invention relates to the technical field of free surface seepage, and discloses a free surface seepage global iterative solution method and system based on an immersive boundary method. The method comprises the following steps: acquiring seepage data such as dam seepage, slope rainfall infiltration and underground water coupling; generating a global computing grid, managing grid encryption / decryption, and recording node coordinates and a topological relation; outputting a water head / pressure field; the geometric accuracy of the free surface is maintained based on the real-time updating of the free surface position of the water head field; processing the constraint of a solid boundary on seepage, and converting a boundary condition into a global unified source item; carrying out global iteration; iterative convergence is judged, and the time step length is adjusted; analyzing the free surface seepage, comparing a global iteration result with an analysis result, and if a comparison result is greater than a preset error value, performing readjustment; and if the error value is smaller than the preset error value, outputting the free surface dynamic evolution video. According to the method, the calculation cost is reduced through global iteration and self-adaptive step length optimization, and efficiency and stability are both considered.

The invention discloses an interactive four-season scene change clear landscape painting dynamic simulation system, which relates to the technical field of digital media, and comprises a data acquisition and style analysis module for acquiring a clear landscape painting and separating elements to count four-season colors and establish a parameter set; the four-season landscape parameter modeling module is used for constructing a four-season dynamic model and forming a parameter sequence according to a time axis; the dynamic rendering engine module carries an ink renderer, simulates cloud and mist water surface dynamic states and calls elements according to parameters of four seasons; the interaction processing module is provided with touch control, voice and gesture interaction interfaces; the user feedback optimization module is used for recording an operation generation preference report and optimizing parameters; the system resource management module is used for monitoring resources and performing hierarchical cache preloading; and the style consistency verification module is used for comparing the picture with the style library and adjusting parameters to keep the style. The method fits the style of the clear landscape painting, and the dynamic change is natural; the interaction modes are rich, and the immersion is strong; traditional painting digital inheritance is assisted, and user experience and practical value are improved.

The application discloses a kind of satellite image digital surface model automatic construction method considering untextured water area, belong to photogrammetry and remote sensing technical field.The application includes: automatic data preprocessing, generates epipolar image pair;Adaptive stereo matching processing, initial digital surface model is generated by block pyramid matching and domain adaptive calibration;Water area intelligent optimization, state analysis is carried out to water area region, water surface dynamic type is determined and modeling strategy is dynamically selected, error closed loop correction mechanism is introduced, error source is traced back reversely and is locally corrected.The application realizes the dynamic adaptation of water area modeling, cross-domain generalization and self-correction, solves the problem that the precision of existing method decreases and matching fails due to domain offset in complex scenes such as wave water surface and inclined water surface, significantly improves the precision and automation degree of digital surface model of untextured water area, and can be widely applied in digital twin, urban planning, water conservancy monitoring and other fields.