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40results about How to "Improve accuracy and performance" patented technology

Static correction method and equipment for converted wave

The invention provides a static correction method and static correction equipment for a converted wave. The method comprises the following steps: acquiring three-component earthquake data; performing preprocessing on the three-component earthquake data and obtaining preprocessed converted wave data; obtaining field shot static collection quantity of a longitudinal wave; according to the preprocessed converted wave data and the field shot static collection quantity of the longitudinal wave, obtaining common receiver gather of the converted wave subjected to dynamic correction; according to the common receiver gather of the converted wave subjected to dynamic correction, obtaining converted wave data after residual shot static correction; according to the converted wave data after residual shot static correction, obtaining converted wave data after static correction of shot points and receiver points. Problems of strict application conditions and poor calculation precision due to relatively complicated near surface of a converted wave in the prior art are solved, a situation that the time for static correction influence on the converted wave receiver points is greater than 1/2 of cycle is adapted to a certain extent, and the static correction precision and efficiency of the converted wave are effectively improved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1

Fishery culture monitoring system and method based on fish collection class acoustic monitoring and positioning

The invention provides a fishery culture monitoring system and method based on fish collection class acoustic monitoring and positioning. The system comprises a culture facility, an aquatic independent patrol inspection platform, a plurality of positioning arrays and a control center, wherein the culture facility is a cuboid; the plurality of positioning arrays are independently fixed on differentpositions of the culture facility; the control center is in communication connection with each positioning array; and the aquatic independent patrol inspection platform and the control center are incommunication connection and are arranged in the culture facility. By use of the fishery culture monitoring system and method based on the fish collection class acoustic monitoring and positioning, anunmanned vehicle is adopted to serve as an acoustic detection carrier, and the unmanned vehicle is positioned through a detection signal, the trajectory planning of the unmanned vehicle is finished through positioning information, an acoustic signal combines detection and positioning functions into a whole, so that the bearing capacity of the unmanned vehicle is greatly saved, the integration level and the stability of equipment are improved, and equipment cost is lowered.
Owner:FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI

Method and device for improving figure recognition precision of indoor monitoring system

The invention provides a method and a device for improving the figure recognition precision of an indoor monitoring system. The method comprises the following steps: setting a face feature library and an appearance feature library; extracting face features and appearance features of the figure target entering the monitoring image range, and recognizing the figure target; extracting face features and appearance features of the figure targets appearing at other positions in the monitoring image range, and recognizing the figure targets; when the number of people in the monitoring image range is large, extracting the face feature and the appearance feature of each person, and recognizing each person; and when the face features of the person in the monitoring image range cannot be extracted, performing detection and recognition by utilizing the appearance features of the person. The figure recognition precision and performance of the monitoring system can be remarkably improved, the operation efficiency is high, the calculation burden of the system is not increased while the performance of the system is improved, deployment, expansion and system upgrading are easy, and the method can be applied to intelligent video monitoring systems of office places, shopping malls and the like.
Owner:INFORMATION SCI RES INST OF CETC
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