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    Methods for two-dimensional autofocus in high resolution radar systems
    2.
    发明授权
    Methods for two-dimensional autofocus in high resolution radar systems 有权
    高分辨率雷达系统中二维自动对焦的方法

    公开(公告)号：US07663529B2

    公开(公告)日：2010-02-16

    申请号：US11889637

    申请日：2007-08-15

    申请人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Ron S. Goodman

    发明人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Ron S. Goodman

    IPC分类号： G01S13/00

    CPC分类号： G01S13/9011

    摘要： Provided are two-dimensional autofocus methods in a synthetic aperture radar (SAR) system which include: (1) two-dimensional pulse pair product algorithm including shear PGA, eigenvector phase history (“EPH”), shear PGA/EPH); (2) two-dimensional optimization algorithms including parametric one-dimensional estimate/two-dimensional correction, parametric two dimensional estimate/two-dimensional correction, unconstrained two-dimensional nonparametric and constrained two-dimensional nonparametric methods; (3) a two-dimensional geometry filter algorithm; (4) a two-dimensional prominent point processing algorithm; (5) a one-dimensional phase estimate of higher order two dimensional phase errors; and, (6) a fast SHARP parametric autofocus algorithm.

    摘要翻译： 提供了一种合成孔径雷达（SAR）系统中的二维自动对焦方法，包括：（1）包括剪切PGA，特征向量相位历史（“EPH”），剪切PGA / EPH的二维脉冲对产品算法; （2）二维优化算法，包括参数一维估计/二维校正，参数二维估计/二维校正，无约束二维非参数和约束二维非参数方法; （3）二维几何滤波算法; （4）二维突出点处理算法; （5）高阶二维相位误差的一维相位估计; 和（6）快速SHARP参数自动对焦算法。

    Methods for two-dimensional autofocus in high resolution radar systems
    3.
    发明授权
    Methods for two-dimensional autofocus in high resolution radar systems 有权
    高分辨率雷达系统中二维自动对焦的方法

    公开(公告)号：US08009079B2

    公开(公告)日：2011-08-30

    申请号：US12926602

    申请日：2010-11-29

    申请人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Ron S. Goodman

    发明人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Ron S. Goodman

    IPC分类号： G01S13/00

    CPC分类号： G01S13/9011

    摘要： Provided are two-dimensional autofocus methods in a synthetic aperture radar (SAR) system which include: (1) two-dimensional pulse pair product algorithm including shear PGA, eigenvector phase history (“EPH”), shear PGA/EPH); (2) two-dimensional optimization algorithms including parametric one-dimensional estimate/two-dimensional correction, parametric two dimensional estimate/two-dimensional correction, unconstrained two-dimensional nonparametric and constrained two-dimensional nonparametric methods; (3) a two-dimensional geometry filter algorithm; (4) a two-dimensional prominent point processing algorithm; (5) a one-dimensional phase estimate of higher order two dimensional phase errors; and, (6) a fast SHARP parametric autofocus algorithm.

    摘要翻译： 提供了一种合成孔径雷达（SAR）系统中的二维自动对焦方法，包括：（1）包括剪切PGA，特征向量相位历史（“EPH”），剪切PGA / EPH的二维脉冲对产品算法; （2）二维优化算法，包括参数一维估计/二维校正，参数二维估计/二维校正，无约束二维非参数和约束二维非参数方法; （3）二维几何滤波算法; （4）二维突出点处理算法; （5）高阶二维相位误差的一维相位估计; 和（6）快速SHARP参数自动对焦算法。

    Methods for two-dimensional autofocus in high resolution radar systems
    5.
    发明申请
    Methods for two-dimensional autofocus in high resolution radar systems 有权
    高分辨率雷达系统中二维自动对焦的方法

    公开(公告)号：US20100149024A1

    公开(公告)日：2010-06-17

    申请号：US12656689

    申请日：2010-02-12

    申请人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Rod S. Goodman

    发明人： Scott D. Connell ,  Edward F. Gabl ,  Mark A. Ricoy ,  Elizabeth T. Batteh ,  Rod S. Goodman

    IPC分类号： G01S13/90

    CPC分类号： G01S13/9011

    摘要： Provided are two-dimensional autofocus methods in a synthetic aperture radar (SAR) system which include: (1) two-dimensional pulse pair product algorithm including shear PGA, eigenvector phase history (“EPH”), shear PGA/EPH); (2) two-dimensional optimization algorithms including parametric one-dimensional estimate/two-dimensional correction, parametric two dimensional estimate/two-dimensional correction, unconstrained two-dimensional nonparametric and constrained two-dimensional nonparametric methods; (3) a two-dimensional geometry filter algorithm; (4) a two-dimensional prominent point processing algorithm; (5) a one-dimensional phase estimate of higher order two dimensional phase errors; and, (6) a fast SHARP parametric autofocus algorithm.

    摘要翻译： 提供了一种合成孔径雷达（SAR）系统中的二维自动对焦方法，包括：（1）包括剪切PGA，特征向量相位历史（“EPH”），剪切PGA / EPH的二维脉冲对产品算法; （2）二维优化算法，包括参数一维估计/二维校正，参数二维估计/二维校正，无约束二维非参数和约束二维非参数方法; （3）二维几何滤波算法; （4）二维突出点处理算法; （5）高阶二维相位误差的一维相位估计; 和（6）快速SHARP参数自动对焦算法。

    Method and system for providing along-track alignment and formatting of synthetic aperture radar (SAR) data, and SAR image formation algorithms using such method and system
    6.
    发明授权
    Method and system for providing along-track alignment and formatting of synthetic aperture radar (SAR) data, and SAR image formation algorithms using such method and system 有权
    用于提供合成孔径雷达（SAR）数据的轨道对准和格式化的方法和系统，以及使用这种方法和系统的SAR图像形成算法

    公开(公告)号：US06873285B2

    公开(公告)日：2005-03-29

    申请号：US10615687

    申请日：2003-07-09

    申请人： Walter G. Carrara ,  Rondal S. Goodman ,  Mark A. Ricoy

    发明人： Walter G. Carrara ,  Rondal S. Goodman ,  Mark A. Ricoy

    IPC分类号： G01S13/90

    CPC分类号： G01S13/9035

    摘要： An along-track alignment and formatting system (ATAFS) formats synthetic aperture radar (SAR) data to align and format signals from scatterers in a scene to achieve an ideal data format in the along-track dimension in which such ideal data format leads to improved image quality of an image based on the SAR data and/or reduced computational burden for generating an image based on the SAR data. Two aspects of the ATAFS include: 1) the division of data stabilization into two distinct steps; and 2) the along-track (or slow-time) migration of signal support of scatterers as a function of their along-track location. A suite of SAR image formation algorithms use the ATAFS in conjunction with conventional signal processing stages to transform input coherent signal data into a complex image with image quality and geometric accuracy commensurate with the inherent information content of the input data.

    摘要翻译： 沿轨道对准和格式化系统（ATAFS）格式化合成孔径雷达（SAR）数据，以对齐和格式化场景中散射体的信号，以实现沿轨道尺寸的理想数据格式，其中这种理想数据格式导致改进 基于SAR数据的图像的图像质量和/或减少基于SAR数据生成图像的计算负担。 ATAFS的两个方面包括：1）将数据稳定分为两个不同的步骤; 和2）作为其沿轨道位置的函数的散射体的信号支持的沿轨道（或慢时间）迁移。 一套SAR图像形成算法将ATAFS与常规信号处理阶段结合使用，将输入相干信号数据转换成具有与输入数据的固有信息内容相符的图像质量和几何精度的复杂图像。