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21. 发明授权

US06917784B2 Image formation by passive collection and processing of radio frequency signals illuminating and scattered by cultural features of terrestrial region 有权
标题翻译：通过被动收集和处理由地球区域的文化特征照射和散射的射频信号的图像形成
公开(公告)号：US06917784B2
公开(公告)日：2005-07-12
申请号：US10664193
申请日：2003-09-17
申请人： Gayle Patrick Martin , John W. Shipley
发明人： Gayle Patrick Martin , John W. Shipley
IPC分类号： G01S13/90 , H04H1/00
CPC分类号： G01S13/90 , G01S2013/9058
摘要： An imaging system uses ‘RF daylight’ created by an RF illumination source, such as a television broadcast tower, to passively generate RF scattering coefficients for multiple points within a prescribed three-dimensional volume being illuminated by the RF transmitter. The scattering coefficients provide a complex interference pattern having amplitude and phase components that contain all information necessary to recreate a three-dimensional monochromatic image of the illuminated scene. Coherent complex correlation provides scene information content that is only a function of scene scattering and collector geometry. The scene information may be coupled to an image utility subsystem, such as a virtual reality simulator, for generation of a three-dimensional image of the illuminated scene.
摘要翻译：成像系统使用由RF照明源（例如电视广播塔）创建的“RF日光”被动地生成由RF发射器照亮的规定三维体积内的多个点的RF散射系数。散射系数提供具有幅度和相位分量的复杂干涉图案，其中包含重现照明场景的三维单色图像所必需的所有信息。相干复相关提供了场景信息内容，这只是场景散射和收集器几何的函数。场景信息可以耦合到诸如虚拟现实模拟器的图像实用子系统，用于产生照明场景的三维图像。

22. 发明授权

US06614386B1 Bistatic radar system using transmitters in mid-earth orbit 有权
标题翻译：在地球轨道上使用发射机的双基地雷达系统
公开(公告)号：US06614386B1
公开(公告)日：2003-09-02
申请号：US10086306
申请日：2002-02-28
申请人： Kenneth L. Moore , Chester L. Richards , Pileih Chen
发明人： Kenneth L. Moore , Chester L. Richards , Pileih Chen
IPC分类号： G01S1389
CPC分类号： G01S13/90 , G01S13/003 , G01S2013/9058
摘要： A bistatic radar system and method. In the illustrative embodiment, a receiver is positioned in a horizontal plane. A transmitter is then positioned in Middle Earth Orbit at a position that is nearly vertical to the plane of the receiver. This configuration provides significant flexibility for the radar system. As such, the radar system may engage in flight patterns, in which the transmitter and receiver have velocity vectors in opposite directions (GMTI mode), the same direction (SAR mode) and variations in between (mixed mode). Lastly, a broad beam is generated from the transmitter and illuminates an area enabling several receivers to simultaneously observe the illuminated area.
摘要翻译：双基地雷达系统和方法。在说明性实施例中，接收器位于水平面中。然后将发射机定位在与接收机平面几乎垂直的位置处的中地球轨道中。这种配置为雷达系统提供了极大的灵活性。因此，雷达系统可以参与飞行模式，其中发射机和接收机具有相反方向（GMTI模式），相同方向（SAR模式）和（混合模式）之间的变化的速度矢量。最后，从发射机产生一个宽波束，并且照亮一个允许多个接收机同时观察照明区域的区域。

23. 发明授权

US06204799B1 Three dimensional bistatic imaging radar processing for independent transmitter and receiver flightpaths 失效
标题翻译：用于独立发射机和接收机飞行路径的三维双向成像雷达处理
公开(公告)号：US06204799B1
公开(公告)日：2001-03-20
申请号：US06153537
申请日：1980-05-27
申请人： William J. Caputi, Jr.
发明人： William J. Caputi, Jr.
IPC分类号： G01S1390
CPC分类号： G01S13/9035 , G01S2007/406 , G01S2013/9058
摘要： A process for correcting data from a three dimensional bistatic synthetic aperture radar system to eliminate distortions and resolution limitations due to the relative positions and motions of the radar transmitter and receiver with respect to a target.
摘要翻译：用于从三维双基地合成孔径雷达系统校正数据以消除由于雷达发射器和接收器相对于目标的相对位置和运动引起的失真和分辨率限制的过程。

24. 发明授权

US4325065A Bistatic imaging radar processing for independent transmitter and receiver flightpaths 失效
标题翻译：用于独立发射机和接收机飞行路径的双向成像雷达处理
公开(公告)号：US4325065A
公开(公告)日：1982-04-13
申请号：US065213
申请日：1979-08-09
申请人： William J. Caputi, Jr.
发明人： William J. Caputi, Jr.
IPC分类号： G01S13/90
CPC分类号： G01S13/9035 , G01S2007/406 , G01S2013/9058
摘要： A process for correcting data from a bistatic synthetic aperture radar to eliminate distortions and resolution limitations due to the relative positions and motions of the radar transmitter and receiver with respect to a target.
摘要翻译：用于从双基地合成孔径雷达校正数据以消除由于雷达发射器和接收器相对于目标的相对位置和运动引起的失真和分辨率限制的过程。

25. 发明授权

US09335409B2 Bistatic inverse synthetic aperture radar imaging 有权
标题翻译：双向反合成孔径雷达成像
公开(公告)号：US09335409B2
公开(公告)日：2016-05-10
申请号：US13847764
申请日：2013-03-20
申请人： RAYTHEON COMPANY
发明人： Theagenis J. Abatzoglou , Johan E. Gonzalez
IPC分类号： G01S13/89 , G01S13/90 , G01S7/295 , G01S13/58
CPC分类号： G01S13/90 , G01S7/2955 , G01S13/582 , G01S13/589 , G01S2013/9058 , G01S2013/9064
摘要： A bistatic synthetic aperture radar (SAR) imaging system and method include: combining each radar return pulse from airborne radar platforms with a sinusoid; deskewing each reduced radar return pulse; estimating motion parameters based on a maximum likelihood estimation (MLE); performing MLE motion correction to generate motion-corrected radar return pulses; acquiring position and velocity estimates of the airborne radar platforms and scattering locations; defining bistatic range and velocity vectors; defining new bistatic range and velocity vectors in a new set of orthogonal axes; projecting vector distance differences between the radar scattering locations along the new set of orthogonal axes to generate new range and velocity measurements along the new set of orthogonal axes; converting the new range and velocity measurements to map Doppler frequency into cross-range; and forming a bistatic SAR image in range and cross-range based on cross-range extent derived from the Doppler frequency mapping.
摘要翻译：双向合成孔径雷达（SAR）成像系统和方法包括：将来自机载雷达平台的每个雷达回波脉冲与正弦波相结合; 每个减少雷达回波脉冲的去歪斜; 基于最大似然估计（MLE）估计运动参数; 执行MLE运动校正以产生运动校正的雷达返回脉冲; 获取机载雷达平台和散射位置的位置和速度估计; 定义双向范围和速度矢量; 在一组新的正交轴中定义新的双向范围和速度矢量; 沿着新的正交轴组在雷达散射位置之间投影向量距离差，以沿着新的正交轴组生成新的范围和速度测量值; 转换新的范围和速度测量，将多普勒频率映射到交叉范围; 并基于从多普勒频谱映射导出的跨距范围，在范围和交叉范围内形成双基SAR图像。

26. 发明申请

US20160103216A1 USING FREQUENCY DIVERSITY TO DETECT OBJECTS 有权
标题翻译：使用频率多样性来检测物体
公开(公告)号：US20160103216A1
公开(公告)日：2016-04-14
申请号：US13856413
申请日：2013-04-03
申请人： The Boeing Company
发明人： David A. Whelan , David Lynch, Jr. , Eric B. Jensen
IPC分类号： G01S13/90
CPC分类号： G01S13/90 , G01S7/2923 , G01S7/414 , G01S13/22 , G01S13/24 , G01S13/28 , G01S2013/9058 , G01S2013/9064
摘要： Technologies for detecting a passive object through the use of frequency diversity to find at least a resonant peak are disclosed. For example, a radar system may illuminate a suspect area with a pulsed radio wave based on a large number of frequency bands and based on parameters associated with the passive object. The reflected radio wave may be processed to generate synthetic aperture radar (SAR) maps associated with the frequency bands. The SAR maps may be analyzed and compared to determine large deviation amplitudes that may indicate a location of the passive object.
摘要翻译：公开了通过使用频率分集来检测被动对象至少找到谐振峰值的技术。例如，雷达系统可以使用基于大量频带的脉冲无线电波并且基于与被动对象相关联的参数照亮可疑区域。可以处理反射的无线电波以产生与频带相关联的合成孔径雷达（SAR）图。可以分析和比较SAR图以确定可能指示被动对象的位置的大偏差幅度。

27. 发明申请

US20140285371A1 BISTATIC INVERSE SYNTHETIC APERTURE RADAR IMAGING 有权
标题翻译：双相反相合成孔径雷达成像
公开(公告)号：US20140285371A1
公开(公告)日：2014-09-25
申请号：US13847764
申请日：2013-03-20
申请人： RAYTHEON COMPANY
发明人： Theagenis J. Abatzoglou , Johan E. Gonzalez
IPC分类号： G01S13/90
CPC分类号： G01S13/90 , G01S7/2955 , G01S13/582 , G01S13/589 , G01S2013/9058 , G01S2013/9064
摘要： Embodiments of synthetic aperture radar systems for mapping Doppler frequency to cross-range to form bistatic inverse synthetic radar images of airborne targets.
摘要翻译：用于将多普勒频率映射到交叉范围的合成孔径雷达系统的实施例，以形成机载目标的双向逆合成雷达图像。

28. 发明申请

US20030151540A1 SYSTEM AND METHOD FOR BISTATIC SAR IMAGE GENERATION WITH PHASE COMPENSATION 有权
标题翻译：用于相位补偿的双向SAR图像生成的系统和方法
公开(公告)号：US20030151540A1
公开(公告)日：2003-08-14
申请号：US10075491
申请日：2002-02-12
发明人： David A. Faulkner
IPC分类号： G01S013/90
CPC分类号： G01S13/003 , G01S13/9023 , G01S13/9035 , G01S2013/9058
摘要： A method and bistatic synthetic aperture radar (SAR) imaging system generate an image of a target area without knowledge of the position or velocity of the illuminator. The system includes an illuminator to illuminate a target area with a null-monopulse radiation pattern interleaved with a sum radiation pattern. The illuminator adjusts the phase terms of the sum radiation pattern to maintain a static electromagnetic field pattern at the target area. A receiver receives the radiation patterns reflected from the target area and generates phase compensation terms by correlating a measured electromagnetic vector field with the known static electromagnetic vector field. The phase compensation terms are used to generate an image of the target area.
摘要翻译：一种方法和双稳态合成孔径雷达（SAR）成像系统在不知道照明器的位置或速度的情况下生成目标区域的图像。该系统包括用与辐射模式交错的零单脉冲辐射图案照射目标区域的照明器。照明器调整总和辐射图案的相位项，以在目标区域保持静电磁场图案。接收器接收从目标区域反射的辐射图，并通过将测量的电磁矢量场与已知静态电磁矢量场相关联来产生相位补偿项。相位补偿项用于生成目标区域的图像。

29. 发明申请

US20030122700A1 Airborne or spaceborne tomographic synthetic aperture radar (SAR) method 有权
标题翻译：机载或空间层析成像合成孔径雷达（SAR）方法
公开(公告)号：US20030122700A1
公开(公告)日：2003-07-03
申请号：US10314629
申请日：2002-12-09
申请人： Deutsches Zentrum fur Luft- und Raumfahrt e.V.
发明人： Alberto Moreira , Andreas Reigber
IPC分类号： G01S013/90
CPC分类号： G01S13/9035 , G01S2013/9058
摘要： By means of a tomograhic radar technique consisting of a coherent combination of large numbers of synthetic aperture radar images acquired by several air or space SAR systems having different look angles, a real three-dimensional imaging of volume scatterers is achieved. This allows the separation of the backscattered signal of volume scatterers in the height direction which can be further evaluated independently. The invention can be put to use in the three-dimensional analysis of vegetation layers and ground strata, but also for imaging and mapping of buildings, urban areas and mountainous terrain.
摘要翻译：通过由具有不同外观角度的几个空气或空间SAR系统获取的大量合成孔径雷达图像的相干组合组成的层析成像雷达技术，实现了体积散射体的真正的三维成像。这允许在高度方向上分离体积散射体的背散射信号，这可以独立地进一步评估。本发明可用于植被层和地层的三维分析，也可用于建筑物，城市和山区的成像和绘图。

30. 发明授权

US06232922B1 Passive three dimensional track of non-cooperative targets through opportunistic use of global positioning system (GPS) and GLONASS signals 有权
标题翻译：通过机会主义使用全球定位系统（GPS）和GLONASS信号，实现非合作目标的被动三维轨迹
公开(公告)号：US06232922B1
公开(公告)日：2001-05-15
申请号：US09310808
申请日：1999-05-12
申请人： John C. McIntosh
发明人： John C. McIntosh
IPC分类号： G01S302
CPC分类号： G01S13/878 , G01S3/02 , G01S13/586 , G01S19/14 , G01S2013/9058
摘要： A method and apparatus for utilization of GPS, GLONASS or other existing RF signals is disclosed. These existing RF signals are scattered by targets, with a receiver of these scattered signals providing processing to extract three dimensional track of these objects. Angle-of-Arrival (AOA) information of a received signal may be used, but is not required. Modifications of standard GPS signal processing allows observables such as range-sum, range-difference, and bistatic Doppler frequency to be observed. These observables, when coupled with standard bistatic/multistatic location equations, provide unambiguous and even redundant information on target coordinates. The method/device employs a modified code (range)/carrier(Doppler) search routine for initial target search/acquisition, wherein a direct path signal is used as a reference from which chip delay and Doppler shift excursions are examined. In this manner, the range and Doppler components observed will correspond to [range-sum−direct path] range, and true bistatic target Doppler irrespective of the satellite or receiver induced Doppler shifts.
摘要翻译：公开了一种用于使用GPS，GLONASS或其他现有RF信号的方法和装置。这些现有的RF信号被目标散射，这些散射信号的接收机提供处理以提取这些物体的三维轨道。可以使用接收信号的到达角度（AOA）信息，但不是必需的。标准GPS信号处理的修改允许观察范围和，范围差和双稳态多普勒频率等观测值。当与标准双基地/多位置方程相结合时，这些可观测量可以提供目标坐标上明确甚至冗余的信息。方法/装置采用用于初始目标搜索/获取的修改的码（范围）/载波（多普勒）搜索程序，其中使用直接路径信号作为检查码片延迟和多普勒频移漂移的参考。以这种方式，观察到的范围和多普勒分量将对应于[范围和 - 直接路径]范围和真正的双基准目标多普勒，而不管卫星或接收机引起的多普勒频移。

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