淺地層剖面儀信號采集與處理軟件設計
[Abstract]:Shallow stratigraphic profiler is a kind of common marine exploration equipment, which can provide direct information of submarine profile for marine geological survey, offshore oil and gas exploration, submarine buried pipeline maintenance, oceanic science and so on. This paper focuses on the design of acquisition and processing software at the receiving end of the shallow stratigraphic profiler. First of all, based on the introduction of the basic principle of shallow profile detection technology and the development of shallow profile detection system, combined with the system structure of shallow profile detection equipment, the advantages of using parametric array emission and vector hydrophone receiving are analyzed. According to the requirements of engineering application, the work to be accomplished in this paper is clarified. According to the functional requirements and hardware platform resources of the shallow profile system, the software design scheme of this paper is demonstrated and analyzed, and the software implementation scheme suitable for the system is selected. Secondly, the control software of shallow profile acquisition and processing system is designed, which mainly involves synchronous signal detection module, data acquisition module, DSP communication module, time-varying gain control module, network interface data transmission module. The function of each part of the software module is studied, and the related debugging and verification are carried out on the hardware platform, and the functions of data acquisition and transmission are realized. Then, the processing algorithm of shallow profile detection is studied, especially copy correlation algorithm and single side beamforming algorithm. First, modeling the detected echo signal, then according to the model verification and processing flow, the corresponding processing algorithm is simulated and analyzed. On this basis, the real-time processing algorithm is implemented on the hardware platform. At the same time, the processing data is uploaded to the PC through the network, and the shallow profile processing function is completed. Finally, the reliability and correctness of the software design are verified by laboratory experiments.
【學位授予單位】:哈爾濱工程大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TP311.52;P715;TP274
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