Generating ISAR images with distinguishable features

    公开(公告)号:US12078718B2

    公开(公告)日:2024-09-03

    申请号:US17674530

    申请日:2022-02-17

    申请人: Raytheon Company

    IPC分类号: G01S13/90

    CPC分类号: G01S13/9064 G01S13/9027

    摘要: Devices, systems, and methods for removing non-linearities in an inverse synthetic aperture radar (ISAR) image are provided. A method includes estimating pitch and roll about range and doppler axes of a time series of ISAR images including the ISAR image, interpolating ISAR image data based on the estimated pitch and roll resulting in interpolated ISAR image data, and resampling based on the interpolated ISAR image data and the time series of TSAR images resulting in an enhanced image.

    RADAR DETECTION OF A CONCEALED OBJECT ON A BODY
    2.
    发明申请
    RADAR DETECTION OF A CONCEALED OBJECT ON A BODY 有权
    一个身体上隐藏的对象的雷达检测

    公开(公告)号:US20160223666A1

    公开(公告)日:2016-08-04

    申请号:US14051037

    申请日:2013-10-10

    申请人: Raytheon Company

    IPC分类号: G01S13/88 G01S7/41 G01S7/35

    摘要: A method for detecting a concealed material in a target comprising a body and the concealed material, the method comprising: emitting radio frequency (RF) energy toward a direction of the target, capturing a signal corresponding to a scattered RF energy reflected from the target, measuring a first mean signal level in a first frequency band of the signal, measuring a second mean signal level in a second frequency band of the signal, and detecting the concealed material when the difference between the first mean signal level and the second mean signal level is above a threshold.

    摘要翻译: 一种用于检测包括主体和隐藏材料的目标中的隐藏材料的方法,所述方法包括:朝向所述目标的方向发射射频(RF)能量,捕获与从所述目标反射的散射RF能量对应的信号, 测量所述信号的第一频带中的第一平均信号电平,测量所述信号的第二频带中的第二平均信号电平,以及当所述第一平均信号电平和所述第二平均信号电平之间的差异时检测所述隐藏材料 超过阈值。

    DETECTION OF CONCEALED OBJECT ON A BODY USING RADIO FREQUENCY SIGNATURES ON FREQUENCIES AND POLARIZATIONS
    3.
    发明申请
    DETECTION OF CONCEALED OBJECT ON A BODY USING RADIO FREQUENCY SIGNATURES ON FREQUENCIES AND POLARIZATIONS 有权
    使用无线电频率检测对频率和极化的物体的隐蔽物体的检测

    公开(公告)号:US20150276920A1

    公开(公告)日:2015-10-01

    申请号:US14435158

    申请日:2013-10-09

    申请人: RAYTHEON COMPANY

    IPC分类号: G01S7/41 G01S7/02 G01S13/88

    摘要: A method for detecting a concealed object in a target comprising a body and the concealed object, the method including emitting, by an emitter, radio frequency (RF) energy toward a direction of the target, receiving, by a receiver, a scattered RF energy reflected from the target, generating, by the receiver, a signal corresponding to the received scattered RF energy, comparing, by a processor, the signal with a plurality of stored RF scattering signatures, each of the RF scattering signatures being associated with an object of interest, and detecting, by the processor, the concealed object when the signal matches one of plurality of RF scattering signatures.

    摘要翻译: 一种用于检测包括主体和隐藏对象的目标中的隐藏对象的方法,所述方法包括通过发射器朝向所述目标的方向发射射频(RF)能量,由接收器接收散射的RF能量 从目标反射,由接收机产生对应于接收的散射RF能量的信号,通过处理器将信号与多个存储的RF散射特征进行比较,每个RF散射特征与 感兴趣并且当信号匹配多个RF散射签名中的一个时由处理器检测隐藏对象。

    Enhanced radar range resolution
    4.
    发明授权
    Enhanced radar range resolution 有权
    增强雷达距离分辨率

    公开(公告)号:US09103918B2

    公开(公告)日:2015-08-11

    申请号:US13688543

    申请日:2012-11-29

    申请人: RAYTHEON COMPANY

    IPC分类号: G01S13/90 G01S7/28

    CPC分类号: G01S13/90 G01S7/28

    摘要: A synthetic aperture radar imaging method that combines each radar return pulse with a sinusoid to reduce the radar return pulses to a baseband frequency and deskew each radar return pulse. It includes determining a maximum likelihood estimate (MLE) of residual motion parameters for a dominant scatterer on the ground relative to the airborne radar and correcting for errors in inertial navigation system measurements based on the MLE residual motion parameters. It includes convolving each radar return pulse with its corresponding radar transmission pulse to generate a range compressed image for each radar return pulse and generating a sub-band range profile image for each radar return pulse and its corresponding radar transmission pulse based on the corresponding range compressed image that has been corrected for residual motion. Performing bandwidth extrapolation on each sub-band and subsequently combining the three bands to produce an enhanced resolution image without grating lobes.

    摘要翻译: 一种合成孔径雷达成像方法,将每个雷达返回脉冲与正弦波相结合,以将雷达返回脉冲降低到基带频率,并对每个雷达返回脉冲进行去偏移。 它包括确定相对于机载雷达的地面上主要散射体的残余运动参数的最大似然估计(MLE),并且基于MLE残余运动参数校正惯性导航系统测量中的误差。 它包括将每个雷达返回脉冲及其相应的雷达传输脉冲进行卷积,以产生每个雷达返回脉冲的范围压缩图像,并根据对应的压缩范围生成每个雷达返回脉冲及其对应的雷达传输脉冲的子带范围轮廓图像 残留运动已被校正的图像。 在每个子带上执行带宽外推,随后组合三个频带以产生不带光栅的增强分辨率图像。

    ORGAN SEGMENTATION IN IMAGE
    5.
    发明申请

    公开(公告)号:US20220392077A1

    公开(公告)日:2022-12-08

    申请号:US17833403

    申请日:2022-06-06

    申请人: Raytheon Company

    摘要: Discussed herein are devices, systems, and methods for organ mask generation. A device, system and method for organ mask generation including generating a synthetic centroid mask, identifying first and second intensity thresholds, in a first segmentation pass, setting (i) pixels of an image with intensities less than the first threshold to zero and (ii) pixels of the image corresponding to objects with centroids outside the synthetic centroid mask to zero, resulting an initial organ mask, in a second segmentation pass, setting pixels (i) with intensities less than the second threshold, the second threshold less than the first threshold to zero and (ii) setting pixels corresponding to objects with centroids outside the initial organ mask to zero, resulting in a second organ mask, and expanding and filling the second organ mask to generate an organ mask.

    System and method for combining 3D images in color

    公开(公告)号:US10366545B2

    公开(公告)日:2019-07-30

    申请号:US16138764

    申请日:2018-09-21

    申请人: RAYTHEON COMPANY

    摘要: A system and method for visualizing data obtained by performing a three-dimensional scan with penetrating radiation. Raw density arrays are formed from the scan, each raw density array being a three-dimensional array. A processed density array is formed by one or more operations, such as taking the difference between two raw density arrays, rotating the processed density array, multiplying the processed density array by a front-lighting array, and projecting the processed density array onto a plane to form an image, the projecting including calculating one or more of a plurality of statistics for each of a set of vectors each corresponding to a pixel of the image, the plurality of statistics including a vector mean, a vector maximum, and a vector standard deviation.

    System and method for combining 3D images in color

    公开(公告)号:US10102682B1

    公开(公告)日:2018-10-16

    申请号:US15489652

    申请日:2017-04-17

    申请人: RAYTHEON COMPANY

    摘要: A system and method for visualizing data obtained by performing a three-dimensional scan with penetrating radiation. Raw density arrays are formed from the scan, each raw density array being a three-dimensional array. A processed density array is formed by one or more operations, such as taking the difference between two raw density arrays, rotating the processed density array, multiplying the processed density array by a front-lighting array, and projecting the processed density array onto a plane to form an image, the projecting including calculating one or more of a plurality of statistics for each of a set of vectors each corresponding to a pixel of the image, the plurality of statistics including a vector mean, a vector maximum, and a vector standard deviation.

    ENHANCED RADAR RANGE RESOLUTION
    9.
    发明申请
    ENHANCED RADAR RANGE RESOLUTION 有权
    增强雷达范围

    公开(公告)号:US20140218231A1

    公开(公告)日:2014-08-07

    申请号:US13688543

    申请日:2012-11-29

    申请人: Raytheon Company

    IPC分类号: G01S13/90 G01S7/28

    CPC分类号: G01S13/90 G01S7/28

    摘要: A synthetic aperture radar imaging method that combines each radar return pulse with a sinusoid to reduce the radar return pulses to a baseband frequency and deskew each radar return pulse. It includes determining a maximum likelihood estimate (MLE) of residual motion parameters for a dominant scatterer on the ground relative to the airborne radar and correcting for errors in inertial navigation system measurements based on the MLE residual motion parameters. It includes convolving each radar return pulse with its corresponding radar transmission pulse to generate a range compressed image for each radar return pulse and generating a sub-band range profile image for each radar return pulse and its corresponding radar transmission pulse based on the corresponding range compressed image that has been corrected for residual motion. Performing bandwidth extrapolation on each sub-band and subsequently combining the three bands to produce an enhanced resolution image without grating lobes.

    摘要翻译: 一种合成孔径雷达成像方法,将每个雷达返回脉冲与正弦波相结合,以将雷达返回脉冲降低到基带频率,并对每个雷达返回脉冲进行去偏移。 它包括确定相对于机载雷达的地面上主要散射体的残余运动参数的最大似然估计(MLE),并且基于MLE残余运动参数校正惯性导航系统测量中的误差。 它包括将每个雷达返回脉冲及其相应的雷达传输脉冲进行卷积,以产生每个雷达返回脉冲的范围压缩图像,并根据对应的压缩范围生成每个雷达返回脉冲及其对应的雷达传输脉冲的子带范围轮廓图像 残留运动已被校正的图像。 在每个子带上执行带宽外推,随后组合三个频带以产生不带光栅的增强分辨率图像。

    Systems and methods for image sharpening
    10.
    发明授权
    Systems and methods for image sharpening 有权
    图像锐化的系统和方法

    公开(公告)号:US08798359B2

    公开(公告)日:2014-08-05

    申请号:US13714945

    申请日:2012-12-14

    申请人: Raytheon Company

    IPC分类号: G06K9/62 G06K9/40 G06K9/00

    摘要: A method of generating an image comprises accessing a dataset gathered from a sensor system and generating, from the dataset, a first image including a plurality of image elements. The method further includes generating a training image by combining the dataset with known sensor responses and generating a weighting factor by correcting the training image in view of the known sensor responses. The method further includes applying the weighting factor to one of the plurality of image elements to form a weighted image element.

    摘要翻译: 生成图像的方法包括访问从传感器系统收集的数据集,并从数据集生成包括多个图像元素的第一图像。 该方法还包括通过将数据集与已知的传感器响应组合来生成训练图像,并且通过根据已知的传感器响应校正训练图像来产生加权因子。 该方法还包括将加权因子应用于多个图像元素之一以形成加权图像元素。