基于逆系统设计的海洋地震勘探数据模拟系统

Marine seismic data simulation system based on inverse system design

针对海洋地震勘探拖缆数据获取系统设计了一套数据模拟系统,用于模拟数据获取系统中拖缆的数据行为,可实现对拖缆数据获取系统的测试。为了充分验证和测试拖缆数据获取系统中的错误处理、数据压缩与解压缩、数据实时过滤等预处理手段,并测试数据获取系统的吞吐率,需要设计一款数据模拟系统来完成这些工作。数据模拟系统在设计中采用逆系统的设计思路,模拟过程中使用真实采集数据文件或软件用于模拟数据源。数据源的数据通过基于FPGA的高速数字通信接口、实时数据拆分和分发等技术手段,实现了拖缆系统的高速数据流的模拟。该数据流在数据空间时间特征、数据发送方式和数据率水平等方面均具备真实的地震拖缆采集数据特征,所以设计的模拟系统可以满足海洋地震勘探拖缆的高速的数据模拟工作,类似的数据模拟技术可以方便地推广到高能物理等领域的大型实验数据获取系统的设计验证中。

This paper designs a data simulation system for the marine seismic exploration streamer data acquisition system, which is used to simulate the data behavior of the streamer in the data acquisition system, and can test the streamer data acquisition system. In order to fully verify and test the error handling, data compression and decompression, data real-time filtering and other pre-processing methods in the streamer data acquisition system, and test the throughput rate of the data acquisition system, the reverse system design is adopted in the design, Using real-world data acquisition files or software simulation data sources, high-speed data streams which can meet the data simulation work of marine seismic exploration streamers and have real seismic streamer acquisition data characteristics in terms of data space time characteristics, data transmission methods, and data rate levels are realized through FPGA-based high-speed digital communication interface,real-time data splitting and distribution. Similar data simulation techniques can be easily extended to the design verification of large experimental data acquisition systems in areas such as high-energy physics.