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公开(公告)号：US20190271783A1
公开(公告)日：2019-09-05
申请号：US16414666
申请日：2019-05-16
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
Abstract: A global positioning system (GPS) receiver and system for determining a geographical location associated with the GPS receiver using less than four GPS signals. The system can comprise a constraint module configured to receive one or more constraints that describe at least one characteristic of a GPS receiver when a number of GPS satellites within a line of sight to the GPS receiver is below a defined value. The system can further comprise a pseudo range calculation module configured to calculate a plurality of pseudo ranges between the GPS receiver and the number GPS satellites, wherein the plurality of pseudo ranges are to various orbital positions of the GPS satellites over a period of time; and a geographical location module configured to determine the geographical location of the GPS receiver using the plurality of pseudo ranges and known constraints of motion associated with the GPS receiver.
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公开(公告)号：US10153549B2
公开(公告)日：2018-12-11
申请号：US15062789
申请日：2016-03-07
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Anton Horvath , Bradley A. Flanders
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.
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公开(公告)号：US20180329013A1
公开(公告)日：2018-11-15
申请号：US16036818
申请日：2018-07-16
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
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.
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74.发明申请公开(公告)号：US20180203091A1
公开(公告)日：2018-07-19
申请号：US15406493
申请日：2017-01-13
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Bradley Flanders
Abstract: All of a plurality of analog-to-digital converters (ADCs) each operating in a first mode of operation within a spectrum of interest sample a signal received at one of a plurality of antennas, with the outputs of the ADCs processed to detect signals of interest based on a threshold. For each of the plurality of antennas, a corresponding one of the plurality of ADCs operating in a second mode of operation samples signals received at the one of the antennas such that signals received are sampled at all of the plurality of antennas, with the outputs of the ADCs processed to calculate an angle of arrival for at least one detected signal of interest using phase interferometry. Bandpass or non-uniform under-sampling may be employed to sample all of the antennas at a relatively low data rate.
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公开(公告)号：US09829558B2
公开(公告)日：2017-11-28
申请号：US14498069
申请日：2014-09-26
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
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.
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Patent Agency Ranking
公开(公告)号：US20170269185A1
公开(公告)日：2017-09-21
申请号：US15610597
申请日：2017-05-31
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
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.
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公开(公告)号：US20170059684A1
公开(公告)日：2017-03-02
申请号：US14843346
申请日：2015-09-02
Applicant: RAYTHEON COMPANY
Inventor： Ian S. Robinson , Bradley A. Flanders
IPC: G01S3/32
CPC classification number: G01S3/32
Abstract: A system for determining a direction for an electromagnetic signal. The system includes a receiving array antenna, including a plurality of antenna elements, each antenna element having a position in the receiving array antenna; a digitizer configured to receive an analog signal from each of the antenna elements, and to sample and digitize each of the analog signals to form a sequence of digitized samples from each of the analog signals; and a processing unit. The processing unit is configured to receive the sequences of sample values from the digitizer; and, for each direction of a plurality of hypothesized directions: combine the sample values from the plurality of antenna elements to form a single time record; fit the single time record with a combination of one or more functions of time; and identify a direction at which a measure of the magnitude of the linear combination is greatest.
Abstract translation: 一种用于确定电磁信号的方向的系统。 该系统包括接收阵列天线，包括多个天线元件，每个天线元件具有在接收阵列天线中的位置; 数字转换器，被配置为从每个天线元件接收模拟信号，并且对每个模拟信号采样和数字化，以形成来自每个模拟信号的数字化采样序列; 和处理单元。 处理单元被配置为从数字化仪接收样本值的序列; 并且对于多个假设方向的每个方向：组合来自所述多个天线元件的采样值以形成单个时间记录; 适合单一时间记录与时间的一个或多个功能的组合; 并且识别线性组合的量值的度量最大的方向。
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公开(公告)号：US20160266259A1
公开(公告)日：2016-09-15
申请号：US14453537
申请日：2014-08-06
Applicant: Raytheon Company
Inventor： Ian S. Robinson , Andrew M. Hautzik , Brandon Crow
CPC classification number: G01S19/42 , G01S19/215 , G01S19/426 , G01S19/46 , G01S19/50
Abstract: A global positioning system (GPS) receiver and system for determining a geographical location associated with the GPS receiver using less than four GPS signals. The system can comprise a constraint module configured to receive one or more constraints that describe at least one characteristic of a GPS receiver when a number of GPS satellites within a line of sight to the GPS receiver is below a defined value. The system can further comprise a pseudo range calculation module configured to calculate a plurality of pseudo ranges between the GPS receiver and the number GPS satellites, wherein the plurality of pseudo ranges are to various orbital positions of the GPS satellites over a period of time; and a geographical location module configured to determine the geographical location of the GPS receiver using the plurality of pseudo ranges and known constraints of motion associated with the GPS receiver.
Abstract translation: 全球定位系统（GPS）接收机和系统，用于使用少于四个GPS信号来确定与GPS接收机相关联的地理位置。 该系统可以包括约束模块，其被配置为当GPS接收机的视线内的GPS卫星数目低于定义值时，接收描述GPS接收机的至少一个特性的一个或多个约束。 所述系统还可以包括：伪距离计算模块，被配置为计算所述GPS接收机与所述GPS卫星数量之间的多个伪距离，其中所述多个伪距离在一段时间内到达所述GPS卫星的各种轨道位置; 以及地理位置模块，被配置为使用与GPS接收机相关联的多个伪距离和已知运动约束来确定GPS接收机的地理位置。
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公开(公告)号：US09279724B2
公开(公告)日：2016-03-08
申请号：US14312740
申请日：2014-06-24
Applicant: RAYTHEON COMPANY
Inventor： Ian S. Robinson , John D. Bloomer , Bradley Flanders
CPC classification number: G01J3/4535 , G01J3/0202 , G01J3/06 , G01J3/45 , G01J2003/4538
Abstract: Interferometric transform spectrometer (ITS) systems and methods of operation thereof. In one example, an ITS system includes a Michelson interferometer that introduces a varying optical path length difference (OPD) between its two arms so as to produce an interferogram, a detector that receives and samples the interferogram, and a scan controller coupled to the detector and to Michelson interferometer. The scan controller controls the Michelson interferometer to vary the OPD in discrete steps such that the detector provides M samples of the interferogram for each of two scan segments. In the first scan segment, the M samples have a uniform or non-uniform sample spacing and the OPD has a first maximum value. In the second scan segment, the M samples have an incrementally increasing sample spacing and the OPD has a second maximum value that is at least twice the first maximum value.
Abstract translation: 干涉测量变换光谱仪（ITS）系统及其操作方法。 在一个示例中，ITS系统包括迈克尔逊干涉仪，其在其两个臂之间引入变化的光程长度差（OPD），以产生干涉图，接收和采样干涉图的检测器，以及耦合到检测器的扫描控制器 和迈克尔逊干涉仪。 扫描控制器控制迈克尔逊干涉仪以离散步骤改变OPD，使得检测器为两个扫描段中的每一个提供干涉图的M个采样。 在第一扫描段中，M个样本具有均匀或不均匀的采样间隔，并且OPD具有第一最大值。 在第二扫描段中，M个采样具有逐渐增加的采样间隔，并且OPD具有至少为第一最大值的两倍的第二最大值。
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公开(公告)号：US20160041267A1
公开(公告)日：2016-02-11
申请号：US14453474
申请日：2014-08-06
Applicant: Raytheon Company
Inventor： Ian S. Robinson
IPC: G01S19/13
CPC classification number: G01S11/026 , G01S11/10 , G01S13/003 , G01S13/60
Abstract: Technology for determining an orbit of a geosynchronous satellite is described. A ground station can receive a transponded (RF) signal from a relay satellite. The relay satellite can receive an RF signal from the geosynchronous satellite and transpond the RF signal to create the transponded RF signal. The ground station can identify a second Doppler shift associated with the transponded RF signal received at the ground station from the relay satellite. The RF signal received at the relay satellite from the geosynchronous satellite can be associated with a first Doppler shift. The ground station can determine a frequency of the transponded RF signal received at the ground station from the relay satellite. The first Doppler shift associated with the RF signal transmitted from the geosynchronous satellite to the relay satellite can be calculated using the frequency of the transponded RF signal and the second Doppler shift associated with the transponded signal. The orbit of the geosynchronous satellite can be determined based on the first Doppler shift associated with the RF signal.
Abstract translation: 描述了确定地球同步卫星轨道的技术。 地面站可以从中继卫星接收转发（RF）信号。 中继卫星可以接收来自地球同步卫星的RF信号，并对RF信号进行反应以产生转发的RF信号。 地面站可以识别与来自中继卫星的地面站处接收的转发RF信号相关联的第二多普勒频移。 从地球同步卫星在中继卫星处接收的RF信号可以与第一多普勒频移相关联。 地面站可以从中继卫星确定在地面站接收的转发RF信号的频率。 与从地球同步卫星发送到中继卫星的RF信号相关联的第一多普勒频移可以使用转发的RF信号的频率和与转发信号相关联的第二多普勒频移来计算。 可以基于与RF信号相关联的第一多普勒频移来确定地球同步卫星的轨道。
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