Apparatus and method for selective signal cancellation
    12.
    发明授权
    Apparatus and method for selective signal cancellation 有权
    用于选择性信号消除的装置和方法

    公开(公告)号:US09444504B1

    公开(公告)日:2016-09-13

    申请号:US14846425

    申请日:2015-09-04

    CPC classification number: H04B1/1036 H03M1/12 H04B1/10

    Abstract: Method for capturing a high dynamic range signal includes: receiving the wideband analog signal; digitizing the wideband signal by a wideband ADC; detecting N strongest sub-bands in the digitized wideband analog signal; adaptively programming N bandstop filters to block the detected N strongest sub-bands from being digitized by the wideband ADC; adjusting a gain of output signals of the N bandstop filters to amplify said output signals; digitizing the amplified output signals by the wideband ADC to obtain a first digitized signal; adaptively programming N passband filters to pass the detected N strongest sub-bands to N ADCs, respectively; digitizing the detected strongest N sub-band signals output from the N pass-band filters by the respective N ADCs to obtain a plurality of second digitized signals; and processing the first digitized signal and the plurality of second digitized signals to identify any duplicate bands.

    Abstract translation: 用于捕获高动态范围信号的方法包括:接收宽带模拟信号; 通过宽带ADC数字化宽带信号; 检测数字化宽带模拟信号中的N个最强子带; 自适应地编程N个带阻滤波器以阻止所检测到的N个最强子带被宽带ADC数字化; 调整N个带阻滤波器的输出信号的增益以放大所述输出信号; 通过宽带ADC数字化放大的输出信号以获得第一数字化信号; 自适应地编程N个通带滤波器以将检测到的N个最强子带分别传送到N个ADC; 对由N个通带滤波器输出的检测到的最强N个子带信号进行数字化,以获得多个第二数字化信号; 以及处理所述第一数字化信号和所述多个第二数字化信号以识别任何重复频带。

    Configurable combination spectrometer and imager
    13.
    发明授权
    Configurable combination spectrometer and imager 有权
    可配置组合光谱仪和成像仪

    公开(公告)号:US09140605B2

    公开(公告)日:2015-09-22

    申请号:US14166067

    申请日:2014-01-28

    Abstract: An imaging transform spectrometer, and method of operation thereof, that is dynamically configurable “on demand” between an interferometric spectrometer function and a broadband spatial imaging function to allow a single instrument to capture both broadband spatial imagery and spectral data of a scene. In one example, the imaging transform spectrometer is configured such that the modulation used for interferometric imaging may be dynamically turned ON and OFF to select a desired mode of operation for the instrument.

    Abstract translation: 成像变换光谱仪及其操作方法,其可以在干涉测量光谱仪功能和宽带空间成像功能之间“按要求”动态配置,以允许单个仪器捕获场景的宽带空间图像和光谱数据。 在一个示例中,成像变换光谱仪被配置为使得用于干涉成像的调制可以被动态地接通和断开以选择仪器的期望的操作模式。

    Basis vector spectral image compression
    14.
    发明授权
    Basis vector spectral image compression 有权
    基础矢量光谱图像压缩

    公开(公告)号:US09123091B2

    公开(公告)日:2015-09-01

    申请号:US14107769

    申请日:2013-12-16

    Abstract: Computer implemented methods for compressing 3D hyperspectral image data having a plurality of spatial pixels associated with a hyperspectral image, and a number of spectral dimensions associated with each spatial pixel, include receiving, using a processor, the 3D hyperspectral image data, a set of basis vectors associated therewith, and either a maximum error amount or a maximum data size. The methods also include partitioning the 3D hyperspectral image data into a plurality of 2D images, each associated with one of the number of spectral dimensions, and an associated one of the set of basis vectors. The methods additionally include ranking the set of basis vectors if not already ranked. The methods may further include iteratively applying lossy compression to the 2D images, in an order determined by the ranking. Other embodiments and features are also disclosed.

    Abstract translation: 用于压缩具有与高光谱图像相关联的多个空间像素的3D高光谱图像数据以及与每个空间像素相关联的多个光谱维度的计算机实现的方法包括:使用处理器接收3D高光谱图像数据,一组基础 与其相关联的向量,以及最大误差量或最大数据大小。 所述方法还包括将3D高光谱图像数据分割成多个2D图像,每个2D图像与多个光谱维数中的一个相关联,以及该组向量中相关联的一个。 所述方法还包括如果尚未排名则对所述基本向量集进行排序。 该方法可以进一步包括以由排名确定的顺序对2D图像迭代地应用有损压缩。 还公开了其它实施例和特征。

    Self-correcting adaptive long-stare electro-optical system
    15.
    发明授权
    Self-correcting adaptive long-stare electro-optical system 有权
    自校正自适应长光电光学系统

    公开(公告)号:US08964047B2

    公开(公告)日:2015-02-24

    申请号:US13903500

    申请日:2013-05-28

    Abstract: An imaging platform minimizes image distortion when there is relative motion of the imaging platform with respect to the scene being imaged where the imaging platform may be particularly susceptible to distortion when it is configured with a wide field of view or high angular rate of movement, or when performing long-stares at a given scene (e.g., for nighttime and low-light imaging.) Distortion correction may be performed by predicting distortion due to the relative motion of the imaging platform, determining optical transformations to prevent the distortion, dynamically adjusting the optics of the imaging platform during exposure, and performing digital image correction.

    Abstract translation: 当成像平台相对于正在成像的场景存在相对运动时,成像平台在被配置为具有宽视野或高角速度运动时可能特别容易受到失真的影响,成像平台使图像失真最小化,或 当在给定的场景(例如,夜间和低光成像时)进行长时间观察时,可以通过预测由于成像平台的相对运动引起的失真来进行失真校正,确定光学变换以防止失真,动态地调整 曝光期间成像平台的光学元件,以及进行数字图像校正。

    OPTIMIZED ORTHONORMAL SYSTEM AND METHOD FOR REDUCING DIMENSIONALITY OF HYPERSPECTRAL IMAGES
    16.
    发明申请
    OPTIMIZED ORTHONORMAL SYSTEM AND METHOD FOR REDUCING DIMENSIONALITY OF HYPERSPECTRAL IMAGES 有权
    优化的正交系统和降低超分辨率图像尺寸的方法

    公开(公告)号:US20140193078A1

    公开(公告)日:2014-07-10

    申请号:US14090753

    申请日:2013-11-26

    Abstract: A method for reducing dimensionality of hyperspectral images includes receiving a hyperspectral image having a plurality of pixels. The method may further include establishing an orthonormal basis vector set comprising a plurality of mutually orthogonal normalized members. Each of the mutually orthogonal normalized members may be associated with one of the plurality of pixels of the hyperspectral image. The method may further include decomposing the hyperspectral image into a reduced dimensionality image, utilizing calculations performed while establishing said orthonormal basis vector set. A system configured to perform the method may also be provided.

    Abstract translation: 一种用于降低高光谱图像的维数的方法包括接收具有多个像素的高光谱图像。 该方法还可以包括建立包括多个相互正交的归一化成员的正交基矢量集合。 每个相互正交的标准化构件可以与高光谱图像的多个像素中的一个相关联。 该方法可以进一步包括利用在建立所述正交基本向量集合时执行的计算来将高光谱图像分解为降维的图像。 还可以提供被配置为执行该方法的系统。

    Optical system that detects and blocks backscatter

    公开(公告)号:US11754680B2

    公开(公告)日:2023-09-12

    申请号:US16853051

    申请日:2020-04-20

    CPC classification number: G01S7/4816 G01S17/89

    Abstract: A LADAR system includes a transmitter configured to emit a directed optical signal. The LADAR system includes an optical aperture through which the directed optical signal is emitted. The optical aperture receives a return optical signal that is based on the directed optical signal. The system includes a detector to generate a measurement by comparing an attribute of the return optical signal to a predefined threshold. The measurement is based on an amount of backscatter in the return optical signal. The system includes an obstructive element that is controllable, based on the measurement, to move either into or out of a path of the return optical signal. The obstructive element is configured to block the return optical signal at least partly. The system includes a focal plane located in the path of the return optical signal. The obstructive element is disposed between the optical aperture and the focal plane.

    OPTICAL SYSTEM THAT DETECTS AND BLOCKS BACKSCATTER

    公开(公告)号:US20210325516A1

    公开(公告)日:2021-10-21

    申请号:US16853051

    申请日:2020-04-20

    Abstract: A LADAR system includes a transmitter configured to emit a directed optical signal. The LADAR system includes an optical aperture through which the directed optical signal is emitted. The optical aperture receives a return optical signal that is based on the directed optical signal. The system includes a detector to generate a measurement by comparing an attribute of the return optical signal to a predefined threshold. The measurement is based on an amount of backscatter in the return optical signal. The system includes an obstructive element that is controllable, based on the measurement, to move either into or out of a path of the return optical signal. The obstructive element is configured to block the return optical signal at least partly. The system includes a focal plane located in the path of the return optical signal. The obstructive element is disposed between the optical aperture and the focal plane.

    Determination of a ground receiver position

    公开(公告)号:US10768264B2

    公开(公告)日:2020-09-08

    申请号:US16036818

    申请日:2018-07-16

    Abstract: Technology for determining a geographical location of a ground receiver is disclosed. A plurality of radio frequency (RF) signals from a plurality of RF signal carriers may be received at the ground receiver. The plurality of RF signal carriers may include satellites operated by a foreign entity or non-global positioning system (non-GPS) satellites. The ground receiver may measure a Doppler shift associated with each of the plurality of RF signals. The geographical location of the ground receiver may be determined in X, Y and Z coordinates based in part on the Doppler shift associated with each of the plurality of RF signals.

    RECONFIGURABLE ANALOG-TO-DIGITAL CONVERSION SAMPLING OF ANTENNAS FOR PHASE INTERFEROMETRY

    公开(公告)号:US20190353743A1

    公开(公告)日:2019-11-21

    申请号:US16528136

    申请日:2019-07-31

    Abstract: A system is provided that includes multiple analog-to-digital converters (ADCs), multiple antennas, and one or more processors. The one or more processors are configured, in a first mode of operation, to receive from the multiple ADCs samples of emissions received by one of the antennas and identify a signal of interest. The one or more processors are configured, in a second mode of operation, receive from the multiple ADCs samples of emissions received by the multiple antennas and identify an angle of arrival for the signal of interest.

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