公开(公告)号：US20170256855A1

公开(公告)日：2017-09-07

申请号：US15062789

申请日：2016-03-07

Applicant: Raytheon Company

Inventor： Ian S. Robinson ,  Anton Horvath ,  Bradley A. Flanders

IPC: H01Q3/34

CPC classification number: H01Q3/34 ,  G01S3/32 ,  G01S7/021 ,  H01Q3/2682 ,  H01Q21/061 ,  H01Q21/067

Abstract: Antenna systems and methods of detecting RF signals received from a field of view (FOV) are presented, employing intersecting fan beam pluralities formed by associated columns or rows of antenna elements and cross-correlation of components of the received radiation from the fan beam pluralities. The intersecting fan beams pluralities form pencil-like beams persistently spanning the FOV as desired. Angle(s) of arrival and frequency channels of incident RF signals may be determined through power estimation, ranking and filtering, and/or frequency channelization techniques. Higher sensitivity beams may be cued to more accurately characterize the incident signals.

公开(公告)号：US09453903B2

公开(公告)日：2016-09-27

申请号：US13904953

申请日：2013-05-29

Applicant: Raytheon Company

Inventor： Ian S. Robinson

IPC: G01S5/02 ,  G01S19/39 ,  B64G1/24 ,  B64G1/36 ,  G01S19/11 ,  G01S19/48

CPC classification number: G01S5/0263 ,  B64G1/242 ,  B64G1/36 ,  G01S19/11 ,  G01S19/39 ,  G01S19/48

Abstract: Technology to determine a satellite's orbit is disclosed. In an example, an orbital determination (OD) device for a satellite operable to determine a satellite's orbit can include computer circuitry configured to: Receive a single global positioning system-generated (GPS-generated) signal from a GPS satellite; decode an ephemeris of the GPS satellite from the GPS-generated signal; determine a Doppler shift and a Doppler trend of the GPS-generated signal; and generate a Doppler-GPS OD using the ephemeris of the GPS satellite and the Doppler shift and the Doppler trend of the GPS-generated signal fit to Kepler orbital elements of an orbit model.

Abstract translation: 披露了确定卫星轨道的技术。 在一个示例中，用于确定卫星轨道的卫星的轨道确定（OD）装置可以包括被配置为：从GPS卫星接收单个全球定位系统产生的（GPS生成的）信号的计算机电路; 从GPS生成的信号解码GPS卫星的星历; 确定GPS生成信号的多普勒频移和多普勒趋势; 并且使用GPS卫星的星历以及GPS生成的信号的多普勒频移和多普勒趋势来适应轨道模型的开普勒轨道元素来产生多普勒-GDOD。

公开(公告)号：US20160218784A1

公开(公告)日：2016-07-28

申请号：US14606701

申请日：2015-01-27

Applicant: RAYTHEON COMPANY

Inventor： Harry Marr ,  Ian S. Robinson ,  Ray T. Hsu

IPC: H04B7/06 ,  H03K19/177

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。

公开(公告)号：US20160049950A1

公开(公告)日：2016-02-18

申请号：US14457186

申请日：2014-08-12

Applicant: Raytheon Company

Inventor： Bradley Flanders ,  Ian S. Robinson

IPC: H03M1/12 ,  H04B1/16 ,  G01R23/16

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。

公开(公告)号：US20150036941A1

公开(公告)日：2015-02-05

申请号：US13957415

申请日：2013-08-01

Applicant: RAYTHEON COMPANY

Inventor： Ian S. Robinson ,  Bradley Flanders ,  Anthony Sommese

IPC: G06K9/62

CPC classification number: G06K9/6202 ,  G06K9/0063 ,  G06K2009/00644

Abstract: Provided are examples of a detecting engine for identifying detections in compressed scene pixels. For a given compressed scene pixel having a set of M basis vector coefficients, set of N basis vectors, and code linking the M basis vector coefficients to the N basis vectors, the detecting engine reduces a spectral reference (S) to an N-dimensional spectral reference (SN) based on the set of N basis vectors. The detecting engine computes an N-dimensional spectral reference detection filter (SN*) from SN and the inverse of an N-dimensional scene covariance (CN). The detecting engine forms an M-dimensional spectral reference detection filter (SM*) from SN* based on the compression code and computes a detection filter score based on SM*. The detecting engine compares the score to a threshold and determines, based on the comparison, whether the material of interest is present in the given compressed scene pixel and is a detection.

Abstract translation: 提供了用于识别压缩场景像素中的检测的检测引擎的示例。 对于具有M个基矢量系数集合，N个基矢量的集合以及将M个基矢量系数链接到N个基矢量的代码的给定压缩场景像素，检测引擎将频谱参考（S）减小到N维 基于N个基矢量的集合的频谱参考（SN）。 检测引擎计算SN的N维频谱参考检测滤波器（SN *）和N维场景协方差（CN）的倒数。 检测引擎基于压缩码从SN *形成M维频谱参考检测滤波器（SM *），并根据SM *计算检测滤波器分数。 检测引擎将得分与阈值进行比较，并且基于比较确定感兴趣的材料是否存在于给定的压缩场景像素中并且是检测。

公开(公告)号：US20150036877A1

公开(公告)日：2015-02-05

申请号：US13959335

申请日：2013-08-05

Applicant: RAYTHEON COMPANY

Inventor： Bradley A. Flanders ,  Ian S. Robinson ,  Anthony M. Sommese

IPC: G06K9/46

CPC classification number: G06K9/46 ,  G06F17/16 ,  G06K7/146 ,  G06K9/00557 ,  G06K9/0063 ,  G06K9/40 ,  G06K9/4609 ,  G06K9/6232 ,  G06K2009/00644 ,  G06K2009/4657 ,  G06T5/20 ,  G06T2207/10028

Abstract: The disclosure provides a filtering engine for selecting sparse filter components used to detect a material of interest (or specific target) in a hyperspectral imaging scene and applying the sparse filter to a plurality of pixels in the scene. The filtering engine transforms a spectral reference representing the material of interest to principal components space using the eigenvectors of the scene. It then ranks sparse filter components based on each transformed component of the spectral reference. The filtering engine selects sparse filter components based on their ranks. The filtering engine performs the subset selection quickly because the computations are minimized; it processes only the spectral reference vector and covariance matrix of the scene to do the subset selection rather than process a plurality of pixels in the scene, as is typically done. The spectral filter scores for the plurality of pixels are calculated efficiently using the sparse filter.

Abstract translation: 本公开提供了一种用于选择用于检测高光谱成像场景中的感兴趣材料（或特定目标）的稀疏滤波器组件并将该稀疏滤波器应用于场景中的多个像素的滤波引擎。 滤波引擎使用场景的特征向量将表示感兴趣的材料的频谱参考转换为主要分量空间。 然后根据频谱参考的每个变换分量对稀疏滤波器分量进行排序。 过滤引擎根据其排名选择稀疏过滤器组件。 过滤引擎快速执行子集选择，因为计算最小化; 如通常所做的那样，它仅处理场景的频谱参考矢量和协方差矩阵来进行子集选择，而不是处理场景中的多个像素。 使用稀疏滤波器有效地计算多个像素的频谱滤波器分数。

公开(公告)号：US08948540B2

公开(公告)日：2015-02-03

申请号：US14090753

申请日：2013-11-26

Applicant: Raytheon Company

Inventor： Ian S. Robinson ,  Bradley Flanders

IPC: G06K9/36 ,  G06K9/46 ,  G01J3/02 ,  G01J3/06 ,  G01J3/28 ,  G06K9/00

CPC classification number: G06K9/46 ,  G01J3/0264 ,  G01J3/027 ,  G01J3/06 ,  G01J3/2823 ,  G01J2003/2836 ,  G06K9/0063

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。

公开(公告)号：US10705177B2

公开(公告)日：2020-07-07

申请号：US15978718

申请日：2018-05-14

Applicant: RAYTHEON COMPANY

Inventor： Ian S. Robinson ,  Bradley A. Flanders

IPC: G01S3/48 ,  G01S3/06 ,  G01S3/04

Abstract: A direction finding interferometer shares receivers among antennas and aperiodically switches between those antennas. The phase differences for a subset of the antenna pairs are measured for each pulse and the results are combined with the results from subsequent pulses to resolve ambiguities. An angle of arrival common to two subsets of angles of arrival is the unambiguous angle of arrival.

公开(公告)号：US10422847B2

公开(公告)日：2019-09-24

申请号：US15492694

申请日：2017-04-20

Applicant: Raytheon Company

Inventor： Ian S. Robinson ,  Bradley A. Flanders ,  Daniel Kilfoyle

IPC: G01S3/46 ,  G01S3/48 ,  G01S3/50

Abstract: Systems and methods for determining an angle of arrival (AoA) of a signal received from an emitters at a pair of antennas spaced apart by more than one half wavelength of the received signal. Features of the signal are determined, including a phase difference between signal components detected at the antennas, and a time difference of arrival (TDOA) having a known measurement error. A set of TDOA possibilities bounded by the known TDOA measurement error and a set of AoA estimates using phase interferometry (PI) within the range are calculated. The TDOA set is iteratively reduced to determine a precise AoA estimate for the emitter.

公开(公告)号：US10416269B2

公开(公告)日：2019-09-17

申请号：US15492712

申请日：2017-04-20

Applicant: Raytheon Company

Inventor： Ian S. Robinson ,  Bradley A. Flanders

IPC: G01S3/48 ,  G01S3/46

Abstract: Methods and systems for determining an angle of arrival (AoA) of a RF emitter signal utilizing phase comparisons between pairs of antennas from among two closely spaced antenna elements and a third antenna element fixedly positioned more distant, and a combination of TDOA and PI techniques, to resolve PI ambiguities. Overlapping AoA ambiguity patterns with different angular spacings may be resolved by TDOA techniques. A span of TDOA AoA possibilities is obtained, centered at a solution to a TDOA angle calculation and bounded by a known TDOA measurement error range.