【摘要】：淺地層剖面儀是一種比較常見的海洋探測設備,可為海洋地質勘測、海洋油氣探測、海底掩埋管道維護、大洋科考等提供直觀的海底剖面信息。本文重點對淺地層剖面儀接收端的采集處理軟件進行設計。首先,在對淺剖探測技術基本原理以及淺剖探測系統(tǒng)發(fā)展現狀進行介紹的基礎上,結合淺剖探測設備的系統(tǒng)構成分析了使用參量陣發(fā)射和矢量水聽器接收的優(yōu)勢所在,并根據工程應用需求明確了本文所要完成的工作。根據淺剖系統(tǒng)功能需求和硬件平臺資源情況對本文的軟件設計方案進行了論證分析,優(yōu)選出適合本系統(tǒng)的軟件實現方案。其次,對淺剖采集處理系統(tǒng)的控制軟件進行設計,主要涉及同步信號檢測模塊、數據采集模塊、FPGA與DSP通信模塊、時變增益控制模塊、網口數據傳輸模塊,并對各部分軟件模塊功能進行了實現研究,并在硬件平臺上進行了相關調試驗證,實現了數據采集和傳輸功能。然后,對淺剖探測的處理算法進行了研究,重點研究了拷貝相關算法和單邊波束形成算法。采取先對探測回波信號進行建模,再根據模型驗證處理流程、對相應處理算法進行仿真分析的研究方案。在此基礎上,在硬件平臺上實時實現處理算法,同時將處理數據通過網絡上傳至PC機,完成了淺剖處理功能。最后,實驗室聯(lián)調和水池實驗驗證了軟件設計的可靠性和正確性。
[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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