编码激励用于岩石物性超声成像的仿真
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摘要
数字编码技术在雷达、医学等方面广泛成功应用使得将其引入地震探测中成为可能。本文为将数字编码技术引入地震探测中,进行了岩石物性成像仿真实验。首先讨论了编码超声成像原理,分析了编码技术的规律和特点。其次通过激励Golay码,利用FieldⅡ软件包进行了岩石物性超声成像的仿真,并比较了仿真结果的成像分辨率。结果表明,编码技术是提高超声成像质量的有效方法。结果可用于指导野外编码地震探测。
The succeed application of the digital encoded technology in the radar,the medical aspects make it possible to use this technology in the seismic detection.In order to introduce the digital encoded technology to seismic detection,the simulation study on coded excitation in rock property imaging carried out.Firstly,we introduce the principles of coded ultrasound imaging and the characteristics on the coded technology.Secondly,through the excitation of Golay codes,ultrasound imaging of the rock property testing has been completed using Field Ⅱ package and compared the simulation result.The results proved that encoded technology is the effective method improving the image quality.The results can be used to guide the seismic detection in the field.
The succeed application of the digital encoded technology in the radar,the medical aspects make it possible to use this technology in the seismic detection.In order to introduce the digital encoded technology to seismic detection,the simulation study on coded excitation in rock property imaging carried out.Firstly,we introduce the principles of coded ultrasound imaging and the characteristics on the coded technology.Secondly,through the excitation of Golay codes,ultrasound imaging of the rock property testing has been completed using Field Ⅱ package and compared the simulation result.The results proved that encoded technology is the effective method improving the image quality.The results can be used to guide the seismic detection in the field.
引文
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[15]赵珩,高上凯.超声二进制编码激励血流测量的实验研究[J].中国生物医学工程学报,2007,26(1):12-18.Zhao H,Gao SK.An experimental study on ultrasound flow measurement based on binary coded excitation[J].Chinese Journal of Biomedical Engineering,2007,26(1):12-18.
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[17]陈颙.地壳岩石的力学性能-理论基础与实验方法[M].地震出版社,1988.
[18]Cespedes I,Huang Y,Ophir J et al.Methods for estimation of sub-sample time delays of digitized echo signals[J].Ultrason Imag,1995,17,142-171.
[19]Jensen JA.A model for the propagation and scattering of ultrasound in tissue[J].J Acoust Soc Am,1991,89,182-191.
[20]Jensen JA,Svendsen NB.Calculation of pressure fields from arbitrarily shaped,apodized,and excited ultrasound transducers[J].IEEE Trans Ultrason,Ferroelec,Freq Contr,1992,39,262-267.
[21]Jensen JA,Darshan G,William D,et al.Ultrasound fields in an attenuating medium[J].Proceedings of the IEEE1993Ultrasonics Symposium,1993,2:943-946.
[22]Jensen JA.Simulating arbitrary-geometry ultrasound transducers using triangles[J].Proceedings of IEEE International Ultrasonics Symposium,1996,2:885-888.
[23]Jensen JA.A new calculation procedure for spatial impulse responses in ultrasound[J].Journal of the Acoustical Society of America,1999,105:3266-3274.
[24]Jensen JA,Nikolov S.Fast simulation of ultrasound images[J].Proceedings the IEEE Ultrasonics Symposium in Puerto Rico,October2000.
[25]Schlaikjer M,Torp Pedersen S,Jensen JA.Simulation of RF data with tissue motion for optimizing stationary echo canceling filters[J].Ultrasonics,2003,41:415-419.
[2]Cunningham AB.Some alternate vibrator signals[J].Geophysics,1979,44(12):1901-1921.
[3]Barbier MG,Viallix JR.Pulse coding in seismic prospecting SOSIE and SEISCODE[J].Geophysical Prospecting,1974,22,153-175.
[4]Barbier MG.Pulse coding in seismology.International human resources development corporation[M].Boston.1982.
[5]Park CB,Richard D,Miller DW,et al.Swept impact seismic technique(SIST)[J].Geophysics,1996,61(6):1789-1803.
[6]陈顒,朱日祥.设立“地下明灯研究计划”的建议[J].地球科学进展,2005a,20(5):485-489.Chen Y,Zhu RX.Proposed project of“underground brightlump”[J].Advances in Earth Sciences,2005a,20(5):485-489.
[7]吴忠良,陈颙,葛洪魁,等.对地B超的意义与可能性[J].科学(上海),2008,60(1):15-18.Wu ZL,Chen Y,Ge HK,et al.GEO-BM:Significance and possibility[J].Science(Shanghai),2008,60(1):15-18.
[8]陈顒,张尉,陈汉林,等.地震雷达[J].地球物理学进展,2006,21(1):1-5.Chen Y,Zhang W,Chen HL,et al.Seismic radar[J].Advances in Earth Sciences,2006,21(1):1-5.
[9]陈顒,朱日祥.发展“地震雷达”的设想[M].中国地球物理学会年刊,长春:吉林大学出版社,2005b,10-11.Chen Y,Zhu RX.Development of"seismic radar"[M].Annual of Chinese Geophysical Society,Changchun:Jiling University Press,2005b,10-11.
[10]常旭,李林新,刘伊克.北京断陷黄庄-高丽营断层伪随机可控震源地震剖面[J].地球物理学报,2008,51(5):1503-1510.Chang X,Li LX,Liu YK,et al.Seismic profile of Huangzhuang-Gaoliying fault in Beijing by Mini-sosie method[J].Chinese Journal geophysics,2008,51(5):1503-1510.
[11]Chiao RY,Xiaohui H.Coded excitation for diagnostic ultrasound:A system developer’s perspective[J].IEEE transactions on ultrasonics,ferroelectrics,and frequency control,2005,52(2):160-170.
[12]Nowicki A,Secomski W,Trots I,et al.Extending penetration depth using coded ultrasonography[J].Bulletin of the polish academy of sciences technical sciences,2004,52(3):215-220.
[13]刘凯,高上凯.高频超声成像中的编码激励研究[J].北京生物医学工程,2007,26(1):31-35.Liu K,Gao SK.Study of coded excitation in high frequency ultrasound imaging[J].Beijing Biomedical Engineering,2007a,26(1):31-35.
[14]刘凯,高上凯.编码激励超声成像系统中二进制最优编码序列的研究[J].中国生物医学工程学报,2007b,26(1):42-47.Liu K,Gao SK.Study of optimal binary sequences in ultrasound imaging system using coded excitation[J].Chinese Journal of Biomedical Engineering,2007,26(1):42-47.
[15]赵珩,高上凯.超声二进制编码激励血流测量的实验研究[J].中国生物医学工程学报,2007,26(1):12-18.Zhao H,Gao SK.An experimental study on ultrasound flow measurement based on binary coded excitation[J].Chinese Journal of Biomedical Engineering,2007,26(1):12-18.
[16]彭旗宇,高上凯.医学超声成像中的编码激励技术及其应用[J].生物医学工程学杂志,2005,22(1):175-180.Peng QY,Gao SK.Coded excitation and its application in medical ultrasound imaging[J].Journal of Biomedical Engineering,2005,22(1):175-180.
[17]陈颙.地壳岩石的力学性能-理论基础与实验方法[M].地震出版社,1988.
[18]Cespedes I,Huang Y,Ophir J et al.Methods for estimation of sub-sample time delays of digitized echo signals[J].Ultrason Imag,1995,17,142-171.
[19]Jensen JA.A model for the propagation and scattering of ultrasound in tissue[J].J Acoust Soc Am,1991,89,182-191.
[20]Jensen JA,Svendsen NB.Calculation of pressure fields from arbitrarily shaped,apodized,and excited ultrasound transducers[J].IEEE Trans Ultrason,Ferroelec,Freq Contr,1992,39,262-267.
[21]Jensen JA,Darshan G,William D,et al.Ultrasound fields in an attenuating medium[J].Proceedings of the IEEE1993Ultrasonics Symposium,1993,2:943-946.
[22]Jensen JA.Simulating arbitrary-geometry ultrasound transducers using triangles[J].Proceedings of IEEE International Ultrasonics Symposium,1996,2:885-888.
[23]Jensen JA.A new calculation procedure for spatial impulse responses in ultrasound[J].Journal of the Acoustical Society of America,1999,105:3266-3274.
[24]Jensen JA,Nikolov S.Fast simulation of ultrasound images[J].Proceedings the IEEE Ultrasonics Symposium in Puerto Rico,October2000.
[25]Schlaikjer M,Torp Pedersen S,Jensen JA.Simulation of RF data with tissue motion for optimizing stationary echo canceling filters[J].Ultrasonics,2003,41:415-419.
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