【摘要】：淺地層剖面儀是一種比較常見的海洋探測設(shè)備,可為海洋地質(zhì)勘測、海洋油氣探測、海底掩埋管道維護(hù)、大洋科考等提供直觀的海底剖面信息。本文重點(diǎn)對淺地層剖面儀接收端的采集處理軟件進(jìn)行設(shè)計(jì)。首先,在對淺剖探測技術(shù)基本原理以及淺剖探測系統(tǒng)發(fā)展現(xiàn)狀進(jìn)行介紹的基礎(chǔ)上,結(jié)合淺剖探測設(shè)備的系統(tǒng)構(gòu)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(jù)工程應(yīng)用需求明確了本文所要完成的工作。根據(jù)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(shè)計(jì)方案進(jìn)行了論證分析,優(yōu)選出適合本系統(tǒng)的軟件實(shí)現(xiàn)方案。其次,對淺剖采集處理系統(tǒng)的控制軟件進(jìn)行設(shè)計(jì),主要涉及同步信號檢測模塊、數(shù)據(jù)采集模塊、FPGA與DSP通信模塊、時(shí)變增益控制模塊、網(wǎng)口數(shù)據(jù)傳輸模塊,并對各部分軟件模塊功能進(jìn)行了實(shí)現(xiàn)研究,并在硬件平臺上進(jìn)行了相關(guān)調(diào)試驗(yàn)證,實(shí)現(xiàn)了數(shù)據(jù)采集和傳輸功能。然后,對淺剖探測的處理算法進(jìn)行了研究,重點(diǎn)研究了拷貝相關(guān)算法和單邊波束形成算法。采取先對探測回波信號進(jìn)行建模,再根據(jù)模型驗(yàn)證處理流程、對相應(yīng)處理算法進(jìn)行仿真分析的研究方案。在此基礎(chǔ)上,在硬件平臺上實(shí)時(shí)實(shí)現(xiàn)處理算法,同時(shí)將處理數(shù)據(jù)通過網(wǎng)絡(luò)上傳至PC機(jī),完成了淺剖處理功能。最后,實(shí)驗(yàn)室聯(lián)調(diào)和水池實(shí)驗(yàn)驗(yàn)證了軟件設(shè)計(jì)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(xué)位授予單位】：哈爾濱工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TP311.52;P715;TP274

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