本文關(guān)鍵詞：激光偏振水下目標(biāo)探測信息處理系統(tǒng)設(shè)計　出處：《南京理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

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【摘要】：本文設(shè)計了激光偏振水下目標(biāo)探測信息處理系統(tǒng),利用532nm激光器為發(fā)射源,通過控制以Cyclone V芯片為主處理器的電路系統(tǒng)來實時接收水下目標(biāo)反射的激光回波信號并提取出偏振信息,同時用GPS實時獲取該探測點的定位信息,實現(xiàn)對激光偏振數(shù)據(jù)和GPS定位數(shù)據(jù)的同步采集、處理和保存,之后對采集到的數(shù)據(jù)進(jìn)行整理與分析,為水下目標(biāo)探測提供一種新型且可靠的手段。本文內(nèi)容主要分為四個部分:第一部分介紹了激光偏振水下目標(biāo)探測的研究背景及意義,以及激光偏振水下目標(biāo)探測的國內(nèi)外研究現(xiàn)狀;第二部分首先介紹了激光水下目標(biāo)探測和偏振目標(biāo)探測的原理,然后設(shè)計了系統(tǒng)的總體方案,將系統(tǒng)分為五個模塊:激光產(chǎn)生模塊、激光偏振信息采集模塊、步進(jìn)電機模塊、GPS信號采集模塊和信息處理模塊;第三部分介紹了信息處理模塊的硬件電路設(shè)計,是系統(tǒng)設(shè)計的核心,用于實現(xiàn)數(shù)據(jù)的采集、處理和保存。信息處理模塊由FPGA核心板和FPGA底板通過接插件相連構(gòu)成,具有靈活性好、結(jié)構(gòu)緊湊、成本低等優(yōu)點。而且搭載了性能優(yōu)越的Cyclone V處理器使得系統(tǒng)控制簡單、可靠性高、通用性強,大大縮短了開發(fā)周期。第四部分介紹了系統(tǒng)的軟件設(shè)計與試驗,首先,采用模塊化設(shè)計思想將系統(tǒng)軟件分為AD采集軟件設(shè)計、GPS信號采集軟件設(shè)計、步進(jìn)電機軟件設(shè)計和SD卡信息存儲軟件設(shè)計四個模塊,然后將各模塊進(jìn)行集成并整體調(diào)試,模塊化設(shè)計不僅縮短了設(shè)計周期,而且提高了軟件的可靠性和可維護(hù)性。最后,用本系統(tǒng)開展了多組試驗,并分析了目標(biāo)偏振特性與激光入射角、探測角、水體溫度、目標(biāo)表面粗糙度、目標(biāo)材質(zhì)等條件的關(guān)系。實驗表明,本系統(tǒng)可以實現(xiàn)對水下目標(biāo)激光偏振數(shù)據(jù)和GPS定位數(shù)據(jù)的同步采集、處理和保存,滿足激光偏振水下目標(biāo)探測信息處理系統(tǒng)的設(shè)計要求。
[Abstract]:In this paper, a laser polarization underwater target detection information processing system is designed, using 532nm laser as the emitter. By controlling the circuit system with Cyclone V chip as the main processor, the laser echo signal reflected from underwater target can be received in real time and polarization information can be extracted. At the same time, we use GPS to acquire the location information of the detection point in real time, realize the synchronous acquisition, processing and saving of laser polarization data and GPS positioning data, and then collate and analyze the collected data. This paper is divided into four parts: the first part introduces the research background and significance of laser polarization underwater target detection. And the research status of laser polarization underwater target detection at home and abroad; In the second part, the principles of laser underwater target detection and polarization target detection are introduced, and then the overall scheme of the system is designed. The system is divided into five modules: laser generation module, laser polarization information acquisition module. Step motor module includes GPS signal acquisition module and information processing module; The third part introduces the hardware circuit design of the information processing module, which is the core of the system design, which is used to realize the data acquisition. Processing and saving. The information processing module is composed of FPGA core board and FPGA bottom board through the connector, with good flexibility and compact structure. With the advantages of low cost and excellent performance, the Cyclone V processor makes the system control simple, reliable and versatile. The software design and test of the system are introduced in 4th part. Firstly, the system software is divided into AD acquisition software design and GPS signal acquisition software design by modular design idea. Step motor software design and SD card information storage software design four modules, and then the integration of each module and the overall debugging, modular design not only shortened the design cycle. And improve the reliability and maintainability of the software. Finally, the system carried out a number of experiments, and analyzed the polarization characteristics of the target and laser incidence angle, detection angle, water temperature, target surface roughness. Experimental results show that the system can realize synchronous acquisition, processing and storage of laser polarization data and GPS positioning data of underwater targets. It meets the design requirements of laser polarization underwater target detection information processing system.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN24

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