2results about How to "High speed accuracy" patented technology

This application provides a method, system, device, and storage medium for realizing a depth-domain imaging surface. The method includes applying a total correction to preprocessed time-domain data to correct a fixed surface, obtaining a final reference surface; secondly, using the travel time information of the first arrival wave of an earthquake to invert the near-surface velocity structure, extracting the velocity and thickness of the weathering layer from the tomographic static correction, and calculating the time correction. This invention, through time-domain tomographic static correction, corrects the weathering layer data to the water table, effectively avoiding the difficulty of near-surface velocity modeling. It quickly and effectively achieves depth-domain modeling and imaging. By utilizing the concept of time-domain static correction, seismic data is corrected to the water table, thus avoiding near-surface velocity modeling and directly starting mid-to-deep modeling from the water table. This shortens the processing cycle and improves velocity accuracy, which is beneficial for seismic imaging.

The application discloses a kind of methods for laser inertial navigation system accelerometer assembly measurement dynamic error compensation, comprising: design inertial navigation calibration software, accelerometer assembly sensitive axis torsional elastic deformation angle model and measurement dynamic error model are established in software;After inertial navigation static initial alignment process is completed, do linear motion and angular motion coupling motion, collect gyroscope accelerometer calibration data, input inertial navigation calibration software, complete calibration parameter identification including accelerometer assembly dynamic error model parameter;According to accelerometer assembly dynamic error model parameter, dynamic error real-time compensation value is calculated, multiplied by sampling period to obtain dynamic velocity increment error compensation, deducts accelerometer velocity increment dynamic velocity increment error compensation, completes accelerometer measurement dynamic error online compensation.The application designs a kind of accelerometer assembly dynamic error compensation model, realizes laser inertial navigation accelerometer assembly dynamic error high-precision compensation.