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仿真与反演
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  simulation and inversion
    Simulation and Inversion Study on the Submarine Topography inthe Tanggu Sea Area Using SAR Images
    塘沽海区海底地形的SAR影像仿真与反演研究
短句来源
    After determining the wind direction, shallow underwater topography of ShuangZi reef SAR image simulation and inversion researches are done in the paper by using shallow underwater topography SAR detection model and algorithm.
    在确定了海面风向后,本文利用浅海水下地形SAR探测模型和算法,以双子礁为研究区域开展了浅海水下地形SAR影像仿真与反演研究。
短句来源
    The simulation and inversion models are treated as two dynamic systems of nonlinear partial differential equations independent of each other so that the inversion model depends only on the grey levels of SAR image and the computation can be completed without data exchange with the simulation model, and the damped Newtonrow action method is proposed to make above simulation and inversion.
    将仿真与反演问题模型处理为相互独立的依赖于时间的非线性偏微分方程动力系统,使反演问题模型仅依赖于SAR影像灰度值,计算可一次性完成,计算过程中无须与正问题进行数据交互,在此基础上,提出了仿真与反演的一种新的一致性优化算法:阻尼牛顿-行作用法.
短句来源
    The submarine topography simulation and inversion model using SAR image proposed by Yuan and Jin (1997) is used to make a bathymetric simulation and inversion using a Radarsat SAR image of the Tanngu sea area in the Bohai Sea.
    利用袁业立、金梅兵(1997)提出的海底地形SAR影像仿真与反演模型,对渤海塘沽海区的一张RadarsatSAR影像进行了仿真和水深反演研究。
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  simulation and inversion
Induced polarization: Simulation and inversion of nonlinear mineral electrodics
      


The numerical method for shallow water SAR image simulation and underwater topography inversion was studied. The simulation and inversion models are treated as two dynamic systems of nonlinear partial differential equations independent of each other so that the inversion model depends only on the grey levels of SAR image and the computation can be completed without data exchange with the simulation model, and the damped Newtonrow action method is proposed to make above simulation and inversion. It is shown...

The numerical method for shallow water SAR image simulation and underwater topography inversion was studied. The simulation and inversion models are treated as two dynamic systems of nonlinear partial differential equations independent of each other so that the inversion model depends only on the grey levels of SAR image and the computation can be completed without data exchange with the simulation model, and the damped Newtonrow action method is proposed to make above simulation and inversion. It is shown from the numerical experiment results that this method is efficient and reliable for solving the simulation problem of SAR image and has high stability and computing accuracy for solving the underwater topography inversion problem. The correlation coefficients between the inversed topography and the real topography for 3 examples are all greater than 0.72029.

研究了浅海SAR影像仿真与水下地形反演的数值方法。将仿真与反演问题模型处理为相互独立的依赖于时间的非线性偏微分方程动力系统,使反演问题模型仅依赖于SAR影像灰度值,计算可一次性完成,计算过程中无须与正问题进行数据交互,在此基础上,提出了仿真与反演的一种新的一致性优化算法:阻尼牛顿-行作用法.数值实验结果表明,算法对SAR影像仿真问题具有高效、可靠、计算稳定的特征;对水下地形反演问题也有较强的数值稳定性和较高的计算精度。本文3个算例反演出的地形与实际地形之间的相关系数都优于0.72029.

The submarine topography simulation and inversion model using SAR image proposed by Yuan and Jin (1997) is used to make a bathymetric simulation and inversion using a Radarsat SAR image of the Tanngu sea area in the Bohai Sea. It is shown from the simulation and inversion results that the simulated image is basically consistent with the real SAR image and the inversed water dapth is well consistent with the real water depth, which further validated the correctness of Yuan's SAR imaging mechanism(1997) and the...

The submarine topography simulation and inversion model using SAR image proposed by Yuan and Jin (1997) is used to make a bathymetric simulation and inversion using a Radarsat SAR image of the Tanngu sea area in the Bohai Sea. It is shown from the simulation and inversion results that the simulated image is basically consistent with the real SAR image and the inversed water dapth is well consistent with the real water depth, which further validated the correctness of Yuan's SAR imaging mechanism(1997) and the feasibility for making the shallow water bathymetric survey in the offshore China Seas using SAR image.

利用袁业立、金梅兵(1997)提出的海底地形SAR影像仿真与反演模型,对渤海塘沽海区的一张RadarsatSAR影像进行了仿真和水深反演研究。研究结果表明:仿真影像与真实SAR影像基本吻合,反演水深与实际水深也有较好的一致性;进一步证实了袁业立(1997)SAR成像机理的正确性和在中国近海利用SAR影像进行浅海水深探测的可行性。

 
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