【摘要】：現(xiàn)代戰(zhàn)爭中，毀傷效果評估作為一項(xiàng)重要作戰(zhàn)任務(wù)，對戰(zhàn)局判斷、戰(zhàn)略決策都起著決定性作用。通過圖像反映毀傷效果最為直觀的，盡可能的獲取大視場角和高分辨率的高質(zhì)量圖像是一項(xiàng)重要的偵查任務(wù)。隨著成像技術(shù)的飛速發(fā)展，成像分辨率越來越高，幀頻越來越快，通過無線方式，難以實(shí)現(xiàn)對大量試驗(yàn)數(shù)據(jù)的全部收回。因此偵查系統(tǒng)通常采用用高速大容量非易失存儲器保存高速實(shí)時(shí)圖像數(shù)據(jù)或雷達(dá)信號，再回讀數(shù)據(jù)至計(jì)算機(jī)進(jìn)行數(shù)據(jù)分析。特別是在比較惡劣的條件下，實(shí)現(xiàn)高清圖像也就是高速大容量的圖像數(shù)據(jù)存儲，，對存儲設(shè)備的性能要求就更高。一是存儲速率高，存儲速度務(wù)必滿足數(shù)據(jù)采樣的傳輸速率；二是存儲容量大，高速數(shù)據(jù)采集必然會產(chǎn)生大量的數(shù)據(jù)流；三是數(shù)據(jù)存儲器件的可靠性高。存儲設(shè)備除了在惡劣的環(huán)境下能工作外，還要保證存儲數(shù)據(jù)的正確性。此外，存儲器的結(jié)構(gòu)尺寸、抗沖擊性能、功耗等也是重要的考慮因素。因此開發(fā)出體積小、抗大量級沖擊和溫度沖擊、功耗低、重量輕、成本低廉的大容量固態(tài)存儲系統(tǒng)在無線偵查設(shè)備中有著非常重要的作用。 本文介紹了在有限的尺寸空間內(nèi)，實(shí)現(xiàn)高速率大容量數(shù)據(jù)存儲的硬件結(jié)構(gòu)框架和系統(tǒng)實(shí)現(xiàn)方案。本設(shè)計(jì)采用了一片F(xiàn)PGA作為核心控制器，同時(shí)控制兩片NANDFLASH芯片的硬件結(jié)構(gòu)，根據(jù)flash芯片的雙CE特性和頁編程的特點(diǎn)，引入了乒乓流水的控制技術(shù)，實(shí)現(xiàn)了數(shù)據(jù)的實(shí)時(shí)高速存儲。同時(shí)還建立了壞塊列表信息，屏蔽了flash芯片的壞塊地址，確保存儲系統(tǒng)的穩(wěn)定工作。在數(shù)據(jù)回讀時(shí)，利用單獨(dú)板卡讀卡器最為通信橋梁，將存儲卡的數(shù)據(jù)回讀至計(jì)算機(jī)。本文還介紹了讀卡器的硬件工作機(jī)制，壞塊管理軟件、轉(zhuǎn)換圖像軟件以及讀卡器應(yīng)用軟件的設(shè)計(jì)方法，最后對本系統(tǒng)進(jìn)行了總結(jié)和展望。
[Abstract]:In modern war, damage effect evaluation, as an important combat task, plays a decisive role in decision-making and strategic decision-making of war situation. It is an important task to obtain high-resolution and large field-of-view images as far as possible because it is the most direct-viewing image to reflect the damage effect. With the rapid development of imaging technology, the resolution of imaging is getting higher and higher, and the frame rate is getting faster and faster. It is difficult to recover a large amount of experimental data by wireless mode. Therefore, the detection system usually uses high-speed and large-capacity non-volatile memory to store high-speed real-time image data or radar signal, and then read back the data to the computer for data analysis. Especially in the worse conditions, the high-speed and large-capacity storage of high-definition images requires higher performance of storage devices. First, the storage rate is high, the storage speed must meet the transmission rate of data sampling; the second is the large storage capacity, high-speed data acquisition will inevitably produce a large number of data streams; third, the reliability of data storage devices is high. Storage devices can not only work in harsh environment, but also ensure the correctness of stored data. In addition, memory structure size, impact resistance, power consumption and so on are also important considerations. Therefore, it is very important to develop a large-capacity solid-state storage system with small size, high-order shock and temperature shock, low power consumption, light weight and low cost in wireless detection equipment. In this paper, the hardware architecture and system implementation scheme of high-speed and large-capacity data storage in limited size space are introduced. In this design, a piece of FPGA is used as the core controller and the hardware structure of two NANDFLASH chips is controlled at the same time. According to the characteristics of double CE and page programming of the flash chip, the ping-pong pipelining control technology is introduced to realize the real-time and high-speed storage of the data. At the same time, the bad block list information is set up, which shields the bad block address of the flash chip and ensures the stable operation of the storage system. When the data is read back, the data of the memory card is read back to the computer by using the most communication bridge of the single card reader. This paper also introduces the hardware working mechanism of the card reader, the bad block management software, the conversion image software and the design method of the card reader application software. Finally, the system is summarized and prospected.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP333

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