小平台三维成像声呐显示系统实现
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摘要
为了满足小平台声呐声学三维成像的需要,并对海底地形进行估计,提出了一种以OMAP5912双核处理芯片为核心处理器,基于DSP内核实时实现的多子阵幅度-相位联合检测算法.利用ARM内核自主开发了三维显示函数库,实现了基于LCD的海底地形信息三维重构显示,并利用QT/E设计了人机交互界面.此小平台三维成像声呐系统在松花湖外场实验过程中性能稳定,能够有效完成湖底三维地形信息的伪彩显示,充分验证了该方法的有效性、实用性与优越性.
In order to meet the demand in acoustical three-dimension(3D) imaging for small platform sonar and carry out the evaluation for submarine topography,a multi-subarray amplitude-phase joint detection algorithm with a dual-core OMAP5912 chip as a core processor was proposed based on the real time realization of DSP inner core.A set of 3D display fuction library was developed with ARM inner core,and 3D reconstruction display for submarine topographic information based on LCD was realized.In addition,a man-machine interface was designed by using QT/E.The present small platform 3D imaging sonar system exhibits the stable properties during the Songhua Lake field experiment,and can effectively accomplish the pseudo-color display for the 3D topographic information of lake-floor.Moreover,the effectivity,practicality and superiority of the proposed method has been proved sufficiently.
In order to meet the demand in acoustical three-dimension(3D) imaging for small platform sonar and carry out the evaluation for submarine topography,a multi-subarray amplitude-phase joint detection algorithm with a dual-core OMAP5912 chip as a core processor was proposed based on the real time realization of DSP inner core.A set of 3D display fuction library was developed with ARM inner core,and 3D reconstruction display for submarine topographic information based on LCD was realized.In addition,a man-machine interface was designed by using QT/E.The present small platform 3D imaging sonar system exhibits the stable properties during the Songhua Lake field experiment,and can effectively accomplish the pseudo-color display for the 3D topographic information of lake-floor.Moreover,the effectivity,practicality and superiority of the proposed method has been proved sufficiently.
引文
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[2]邹琪琳,王利威,庞盟,等.三维VSP光纤检波器井下地震采集系统[J].光子学报,2008,37(1):77-81.(ZOU Qi-lin,WANG Li-wei,PANG Meng,et al.Down-hole seismic survey system with fiber-optic ac-celerometer sensor array for3-dimensions verticalseismic profile[J].Acta Photonica Sinica,2008,37(1):77-81.)
[3]Gorgonio U S,Cunha H R B,de Filho E X L,et al.Application profiling in a dual-core platform[C]//2008International Conference on Consumer Electro-nics.Lasvegas,USA,2008:1-2.
[4]孙连三,德力根,辛鹏宇,等.基于OMAP的手持设备嵌入式系统研究[J].计算机工程与设计,2008,29(9):2242-2245.(SUN Lian-san,DE Li-gen,XIN Peng-yu,et al.Re-search on embedded system for handheld devicesbased on OMAP[J].Computer Engineering and De-sign,2008,29(9):2242-2245.)
[5]李生笔,张雪英.DSP Gateway在OMAP平台的实现[J].电脑开发与应用,2008,21(4):22-25.(LI Sheng-bi,ZHANG Xue-ying.Implementation ofDSP Gateway on the OMAP platform[J].ComputerDevelopment&Applications,2008,21(4):22-25.)
[6]Rusanovskyy D,Koivusaari J J,Egiazarian K,et al.Im-plementation of DCT-based video denoising algorithmwith OMAP innovator development kit[C]//Procee-dings of SPIE,The International Society for Optical En-gineering.San Jose,USA,2007:65070A.1-65070A.9.
[7]周天,李海森,朱志德,等.波束测深系统多子阵检测法的改进及其性能分析[J].声学技术,2005,24(3):152-156.(ZHOU Tian,LI Hai-sen,ZHU Zhi-de,et al.Perfor-mance analysis of improved multiple sub-array detec-tion method in multi-beam bathymetry system[J].Technical Acoustics,2005,24(3):152-156.)
[8]黄有群,吴冰冰.基于三角网格的三维地形局部贴图方法的研究[J].沈阳工业大学学报,2007,29(5):560-563.(HUANG You-qun,WU Bing-bing.Partial texturemapping method of3D terrain based on triangularmesh[J].Journal of Shenyang University of Techno-logy,2007,29(5):560-563.)
[9]魏东,池聪伶.三维地形可视域分析的显示技术[J].沈阳工业大学学报,2009,31(4):458-461.(WEI Dong,CHI Cong-ling.Displaying technology of3D terrain viewshed analysis[J].Journal of Shen-yangUniversity of Technology,2009,31(4):458-461.)
[10]Xia Z H,Pan T T,Zhang Z B.Embedded video moni-toring system based on the OMAP[C]//Proceedingsof SPIE,The International Society for Optical Engi-neering.San Jose,USA,2008:68330C.1-68330C.4.
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