發(fā)布時間：2018-04-14 10:00

  本文選題：SAR + TMS320C6678　； 參考：《西安電子科技大學(xué)》2015年碩士論文

【摘要】：合成孔徑雷達(dá)(Synthetic Aperture Radar,SAR)具有全天候、全天時、遠(yuǎn)距離成像和高分辨率成像等特點(diǎn),在軍事和民用領(lǐng)域得到了廣泛應(yīng)用。隨著數(shù)字信號處理技術(shù)和合成孔徑雷達(dá)成像算法的不斷發(fā)展,毫米波高分辨SAR的實(shí)時成像的實(shí)現(xiàn)成為了研究的新熱點(diǎn)。本文重點(diǎn)論述了基于TI DSP TMS320C6678的機(jī)載毫米波高分辨SAR實(shí)時快視處理軟件設(shè)計(jì),針對機(jī)載毫米波高分辨SAR處理數(shù)據(jù)量大、處理過程復(fù)雜的特點(diǎn),采用協(xié)處理板+陣列處理板基于多DSP進(jìn)行實(shí)時成像處理,具有極強(qiáng)的信號處理能力。信號處理板上加入了交換芯片,解決了多板、多DSP之間的數(shù)據(jù)交換,充分展示了DSP強(qiáng)大的數(shù)據(jù)處理能力以及其接口廣泛實(shí)用性。首先介紹了距離-多普勒算法(Range--Doppler,RD)的基本原理,著重介紹了基于慣導(dǎo)的運(yùn)動補(bǔ)償處理。然后介紹了設(shè)計(jì)中所使用的硬件,簡述了處理板上重要的芯片TMS320C6678,詳細(xì)介紹了所用信號處理板卡(協(xié)處理板+陣列處理板)的結(jié)構(gòu),說明了信號處理系統(tǒng)中板卡間的接口聯(lián)系。然后詳細(xì)闡述了多板間、多DSP間、多核間的算法映射及軟件實(shí)現(xiàn),并給出了外場實(shí)驗(yàn)中實(shí)測的實(shí)驗(yàn)結(jié)果。實(shí)驗(yàn)結(jié)果表明多核DSP的處理完全滿足高實(shí)時性的要求,而且具有較高的精確度。最后針對多DSP間程序調(diào)試?yán)щy的情況,詳細(xì)描述了SAR實(shí)時快視調(diào)試軟件設(shè)計(jì),并結(jié)合多次調(diào)試結(jié)果,驗(yàn)證整個調(diào)試軟件的性能,實(shí)驗(yàn)證明調(diào)試軟件大大方便了多DSP間的程序調(diào)試。
[Abstract]:Synthetic Aperture radar (SAR) has been widely used in military and civil fields for its characteristics of all-weather, all-day, long-range and high-resolution imaging.With the development of digital signal processing technology and synthetic aperture radar imaging algorithm, the realization of millimeter-wave high-resolution SAR real-time imaging has become a new research hotspot.This paper focuses on the design of real-time fast view processing software for airborne millimeter wave high resolution SAR based on TI DSP TMS320C6678. Aiming at the characteristics of large amount of data and complex processing process of airborne millimeter wave high resolution SAR processing,The coprocessing board array processing board is used for real-time imaging based on multi-DSP, which has strong signal processing ability.A switch chip is added to the signal processing board, which solves the data exchange between multi-board and multi-, and fully demonstrates the powerful data processing ability of DSP and the wide practicability of its interface.The basic principle of Range-Doppler algorithm Range-DopplerRD) is introduced firstly, and the motion compensation processing based on inertial navigation is emphasized.Then the hardware used in the design is introduced, the important chip TMS320C6678 on the processing board is briefly described, the structure of the signal processing board (co-processing board array processing board) is introduced in detail, and the interface connection between the boards in the signal processing system is explained.Then, the algorithm mapping and software implementation between multi-board, multi- and multi-core are described in detail, and the experimental results in the field experiment are given.The experimental results show that the multi-core DSP processing can meet the requirements of high real-time performance and has high accuracy.Finally, in view of the difficulty of debugging the program between multiple DSP, the design of the debugging software of SAR real-time and fast view is described in detail, and the performance of the whole debugging software is verified by combining the debugging results of many times.The experiment proves that the debugging software greatly facilitates the program debugging between multiple DSP.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN957.52

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 李震宇;梁毅;邢孟道;保錚;;一種俯沖段子孔徑SAR大斜視成像及幾何校正方法[J];電子與信息學(xué)報;2015年08期

2 彭益智;霍家道;徐偉;;一種基于TMS320C6678的JPEG編碼算法并行實(shí)現(xiàn)方法[J];指揮控制與仿真;2012年01期

3 楊磊;唐禹;孫光才;邢孟道;保錚;;基于方位波數(shù)域聚束模式PFA的運(yùn)動補(bǔ)償新方法研究[J];電子與信息學(xué)報;2010年11期

4 楊光宇;高曉蓉;王黎;王澤勇;;基于TI C6000系列DSP的C/C++程序優(yōu)化技術(shù)[J];現(xiàn)代電子技術(shù);2009年08期

5 陳志勇,陳坤,黎湘;基于DSP的雷達(dá)通用并行信號處理平臺[J];現(xiàn)代雷達(dá);2005年08期

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本文編號：1748783