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    Radar system and method for detecting and discriminating targets from a safe distance
    1.
    发明授权
    Radar system and method for detecting and discriminating targets from a safe distance 失效
    用于从安全距离检测和鉴别目标的雷达系统和方法

    公开(公告)号：US5592170A

    公开(公告)日：1997-01-07

    申请号：US466938

    申请日：1995-06-06

    申请人： Robert H. Price ,  Herbert T. Davis, III ,  Scott A. Dunn

    发明人： Robert H. Price ,  Herbert T. Davis, III ,  Scott A. Dunn

    IPC分类号： F41H11/16 ,  G01S7/288 ,  G01S7/41 ,  G01S13/24 ,  G01S13/88

    CPC分类号： G01S13/24 ,  F41H11/16 ,  G01S7/412 ,  G01S13/885 ,  G01S2007/2883

    摘要： A frequency-agile, narrow-instantaneous bandwidth radar system detects objects, and discriminates between different types of objects, from a safe stand-off distance. Transmit circuitry transmits a train of continuous wave signals in a multitude of stepped operating frequencies that illuminates the target area. Return signals from the target area are received through at least a pair of spaced-apart receive antennas. Signal receive/processing circuitry coupled to the spaced-apart receive antennas selectively combines and processes the return signals to identify variations in the received signals indicative of the presence of a specific type of object. At each of the stepped frequencies, the system noise and the clutter of the signals is reduced by averaging and smoothing the incoming data and the cross-power spectrum at each frequency is calculated. Using the information of the power spectra of all frequencies, the Mahalanobis distance is defined and the presence and classification of a target is determined. Using the information of the cross-power spectra of all frequencies, the location of the mine is determined by the azimuth angle and echo time.

    摘要翻译： 频率敏捷，窄瞬时带宽雷达系统检测物体，并从不安全的距离距离区分不同类型的物体。 发射电路以照亮目标区域的多个步进工作频率传输一串连续波信号。 通过至少一对间隔开的接收天线来接收来自目标区域的返回信号。 耦合到间隔开的接收天线的信号接收/处理电路选择性地组合并处理返回信号以识别指示特定类型的对象的存在的接收信号中的变化。 在每个阶跃频率下，通过平均和平滑输入数据来减少信号的系统噪声和杂波，并计算每个频率的交叉功率谱。 使用所有频率的功率谱的信息，定义马哈拉诺比斯距离，并确定目标的存在和分类。 使用所有频率的交叉功率谱的信息，矿场的位置由方位角和回波时间决定。

    System and methods of amplitude-modulation frequency-modulation (AM-FM) demodulation for image and video processing
    2.
    发明授权
    System and methods of amplitude-modulation frequency-modulation (AM-FM) demodulation for image and video processing 有权
    用于图像和视频处理的幅度调制调制（AM-FM）解调系统和方法

    公开(公告)号：US08515201B1

    公开(公告)日：2013-08-20

    申请号：US12586276

    申请日：2009-09-18

    申请人： Victor Manuel Murray Herrera ,  Marios Stephanou Pattichis ,  Peter Soliz ,  Carla Paola Agurto Rios ,  Herbert T. Davis, III

    发明人： Victor Manuel Murray Herrera ,  Marios Stephanou Pattichis ,  Peter Soliz ,  Carla Paola Agurto Rios ,  Herbert T. Davis, III

    IPC分类号： G06K9/40

    CPC分类号： G06K9/527

    摘要： Image and video processing using multi-scale amplitude-modulation frequency-modulation (“AM-FM”) demodulation where a multi-scale filterbank with bandpass filters that correspond to each scale are used to calculate estimates for instantaneous amplitude, instantaneous phase, and instantaneous frequency. The image and video are reconstructed using the instantaneous amplitude and instantaneous frequency estimates and variable-spacing local linear phase and multi-scale least square reconstruction techniques. AM-FM demodulation is applicable in imaging modalities such as electron microscopy, spectral and hyperspectral devices, ultrasound, magnetic resonance imaging (“MRI”), positron emission tomography (“PET”), histology, color and monochrome images, molecular imaging, radiographs (“X-rays”), computer tomography (“CT”), and others. Specific applications include fingerprint identification, detection and diagnosis of retinal disease, malignant cancer tumors, cardiac image segmentation, atherosclerosis characterization, brain function, histopathology specimen classification, characterization of anatomical structure such as carotid artery walls and plaques or cardiac motion and as the basis for computer-aided diagnosis to name a few.

    摘要翻译： 使用多尺度幅度调制调制（“AM-FM”）解调的图像和视频处理，其中使用对应于每个刻度的带通滤波器的多尺度滤波器组来计算瞬时幅度，瞬时相位和瞬时幅度的估计 频率。 使用瞬时幅度和瞬时频率估计和可变间距局部线性相位和多尺度最小二乘重建技术重构图像和视频。 AM-FM解调适用于电子显微镜，光谱和超光谱装置，超声，磁共振成像（“MRI”），正电子发射断层扫描（“PET”），组织学，彩色和单色图像，分子成像，X线片等成像模式 （“X射线”），计算机断层扫描（“CT”）等。 具体应用包括指纹识别，视网膜疾病的检测和诊断，恶性肿瘤，心脏图像分割，动脉粥样硬化特征，脑功能，组织病理学标本分类，解剖结构如颈动脉壁和斑块或心脏运动的表征，并作为基础 计算机辅助诊断等等。