Universal coherent technique generator

    公开(公告)号:US10473758B2

    公开(公告)日:2019-11-12

    申请号:US15091988

    申请日:2016-04-06

    Abstract: Devices and methods of providing response pulses in response to threat pulses are general described. The threat pulses are detected, identified and validity determined using reprogrammable firmware. Threat pulses are extracted from memory and the amplitude, frequency, phase, length and timing modified to generate a coherent set of superposed response pulses in response to the threat pulses. The modifications are calculated in situ using parameterization, rather than being based on tables. Multiple response pulses in response to different threat pulses are simultaneously generated, combined and transmitted in a single channel. Partial pulse capability and the capability to create a weighted and modulated composition of multiple response pulses is provided.

    Digital analog dither adjustment
    22.
    发明授权

    公开(公告)号:US10348321B2

    公开(公告)日:2019-07-09

    申请号:US15722265

    申请日:2017-10-02

    Abstract: A method and system for data conversion includes an analog noise generator to generate a random, non-deterministic, analog noise signal. An adder adds the analog noise signal to an analog RF signal to produce a dithered analog signal. A first quantizer converts the analog noise signal to digital to produce a digital noise signal. A second quantizer converts the dithered analog signal to a digital equivalent signal. A digital dither adjustment module removes amplitude measurements of the digital noise signal from the digital equivalent signal to obtain a linearized digital representation of the analog RF signal.

    Self correcting adaptive low light optical payload

    公开(公告)号:US10341565B2

    公开(公告)日:2019-07-02

    申请号:US15151033

    申请日:2016-05-10

    Abstract: Methods and systems are disclosed for compensating for image motion induced by a relative motion between an imaging platform and a scene. During an exposure period, frames of the scene may be captured respectively in multiple spectral bands, where one of the spectral bands has a lower light level than the first spectral band, and contemporaneous frames include a nearly identical induced image motion. Image eigenfunctions are utilized to estimate the induced image motion from the higher SNR spectral band, and compensate in each of the multiple bands.

    RAPID ROBUST DETECTION DECREASER
    24.
    发明申请

    公开(公告)号:US20190113624A1

    公开(公告)日:2019-04-18

    申请号:US15785300

    申请日:2017-10-16

    Abstract: A system for tracking targets. A sequence of sensor observations is processed with two thresholds, including a first threshold, and a second threshold, higher than the first threshold. Signals that exceed the first threshold are identified as low-confidence target detections and stored for possible future use. When a signal exceeds the higher second threshold, it is identified as a high-confidence detection, and one or more candidate tracks are formed, including the high-confidence detection and one or more low-confidence detections from within a neighborhood of the high-confidence detection.

    Determination of a ground receiver position

    公开(公告)号:US10024946B2

    公开(公告)日:2018-07-17

    申请号:US15610597

    申请日:2017-05-31

    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.

    Defeat of aliasing by incremental sampling
    26.
    发明授权
    Defeat of aliasing by incremental sampling 有权
    通过增量抽样来消除混叠

    公开(公告)号:US09571119B2

    公开(公告)日:2017-02-14

    申请号:US14457186

    申请日:2014-08-12

    CPC classification number: H03M1/128 G01R23/16 H03M1/1265 H04B1/16

    Abstract: A method includes generating a sampling signal having a non-uniform sampling interval and sampling a received signal with an analog-to-digital converter (ADC) using the sampling signal. The method also includes mapping the sampled received signal onto a frequency grid of sinusoids, where each sinusoid has a signal amplitude and a signal phase. The method further includes estimating the signal amplitude and the signal phase for each sinusoid in the frequency grid. In addition, the method includes computing an average background power level and detecting signals with power higher than the average background power level. The non-uniform sampling interval varies predictably.

    Abstract translation: 一种方法包括使用采样信号产生具有不均匀采样间隔的采样信号和使用模数转换器(ADC)对接收信号进行采样。 该方法还包括将采样的接收信号映射到正弦波的频率网格上,其中每个正弦波具有信号幅度和信号相位。 该方法还包括估计频率网格中每个正弦波的信号幅度和信号相位。 此外,该方法包括计算平均背景功率电平和检测功率高于平均背景功率电平的信号。 非均匀采样间隔可预测地变化。

    Independent covariance estimation and decontamination
    27.
    发明授权
    Independent covariance estimation and decontamination 有权
    独立协方差估计和去污

    公开(公告)号:US09466122B1

    公开(公告)日:2016-10-11

    申请号:US14835175

    申请日:2015-08-25

    Abstract: Methods and systems are provided for estimating background spectral content in a hyperspectral imaging (HSI) scene. A HSI processor computes a scene covariance matrix for each of a plurality of sparsely sampled pixel sets, identifies and removes the spectral content of contaminating pixels from the covariance matrices, and checks the consistency among the plurality of decontaminated covariance matrices, iteratively re-sampling and re-computing said matrices until an acceptable consistency is achieved, and then computes a final decontaminated covariance matrix representative of the background spectral content of the scene. Alternate approaches to pixel sampling, and/or using fewer spectral dimensions than are available for the pixels are presented.

    Abstract translation: 提供了用于估计高光谱成像(HSI)场景中背景光谱含量的方法和系统。 HSI处理器为多个稀疏采样的像素集合中的每一个计算场景协方差矩阵,从协方差矩阵中识别和去除污染像素的频谱内容,并且检查多个去污协方差矩阵之间的一致性,迭代重采样和 重新计算所述矩阵,直到达到可接受的一致性,然后计算表示场景的背景光谱内容的最终去污协方差矩阵。 呈现像素采样的替代方法和/或使用比可用于像素的更少的光谱尺寸。

    Apparatus and method for efficient waveform portability between different platforms
    28.
    发明授权
    Apparatus and method for efficient waveform portability between different platforms 有权
    不同平台之间有效的波形可移植性的装置和方法

    公开(公告)号:US09385798B1

    公开(公告)日:2016-07-05

    申请号:US14606701

    申请日:2015-01-27

    CPC classification number: H04B7/0613 G06F1/0342 H03K19/17708 H04K3/42 H04K3/44

    Abstract: Method and apparatus for generating channelized hardware-independent waveforms include: generating metadata associated with a waveform, the metadata including a frequency list, a phase list and amplitude information, wherein the metadata is generated independent of a number of channels; interpreting the metadata to generate channel select, frequency, phase and amplitude parameters; providing the frequency, phase and amplitude parameters to a direct digital synthesizer (DDS) to generate a digital signal; providing the channel select parameter to a channel selector to generate a plurality of channelized waveforms from the generated digital signal; and transmitting the plurality of channelized waveforms over a plurality of communication channels.

    Abstract translation: 用于产生信道化与硬件无关的波形的方法和装置包括:生成与波形相关联的元数据,所述元数据包括频率列表,相位列表和幅度信息,其中独立于多个信道生成所述元数据; 解释元数据以产生通道选择,频率,相位和幅度参数; 将频率,相位和幅度参数提供给直接数字合成器(DDS)以产生数字信号; 向频道选择器提供频道选择参数以从所生成的数字信号中产生多个信道化波形; 以及在多个通信信道上发送多个信道化波形。

    Determination of a Ground Receiver Position
    29.
    发明申请
    Determination of a Ground Receiver Position 审中-公开
    确定地面接收器位置

    公开(公告)号:US20160091608A1

    公开(公告)日:2016-03-31

    申请号:US14498069

    申请日:2014-09-26

    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.

    Abstract translation: 公开了用于确定地面接收机的地理位置的技术。 可以在地面接收机处接收来自多个RF信号载波的多个射频(RF)信号。 多个RF信号载体可以包括由外部实体或非全球定位系统(非GPS)卫星操作的卫星。 接地接收机可以测量与多个RF信号中的每一个相关联的多普勒频移。 部分地基于与多个RF信号中的每一个相关联的多普勒频移,可以在X,Y和Z坐标中确定接地接收机的地理位置。

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