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51. 发明公开

EP3022582A1 METHOD FOR FILTERING OF INTERFEROMETRIC DATA ACQUIRED BY SYNTHETIC APERTURE RADAR (SAR) 审中-公开
标题翻译： FOR FILTERING方法的装置的合成孔径雷达（SAR）RECOGNIZED干涉式DATA
公开(公告)号：EP3022582A1
公开(公告)日：2016-05-25
申请号：EP14777869.0
申请日：2014-07-11
申请人： Consiglio Nazionale Delle Ricerche
发明人： FORNARO, Gianfranco , PACIULLO Antonio , REALE, Diego , VERDE Simona
IPC分类号： G01S13/90
CPC分类号： G01S13/9023
摘要： The present invention concerns a Method for filtering interferometric data acquired by Synthetic Aperture Radar (SAR), comprising the following steps: (A) acquiring a plurality of images N by means of at least one sensor (A1,..., AM), which runs a plurality of orbits On, with n=1,..., N, in which the sensor (A1,..., AM) carries out a plurality of detections of at least one area t n , each detection during each orbit On being carried out in time references t n , with &eegr;=1...., N, emitting a radiation having a predetermined wavelength λ; so as to obtain a multipass data set comprising a set of N images of said at least one area, each of said images being composed of a plurality of pixels P in which targets may be present even possibly interfering due to effects of geometric distortions in the presence of structures with vertical development, said images being geometrically recorded compared to a reference image, to which a reference orbit is associated; (B) determining, for each pixel P of each of said N images, a signal column vector x(P) of length N, constituted by xn(P) signals, n = 1..., N detected by said sensor (A1,,..., AM) in each of said orbits On; (C) determining, for each pixel P of each of said images of said set of N images, a covariance matrix associated with said signal vector \(P); (D) determining the components of backscattering contributions of said signal vector x(P) by decomposing said covariance matrix, each backscattering contribution ŷ&kgr; having a value of the square of its norm λ&kgr;, with k =1,....,&kgr;

52. 发明授权

EP2370834B1 SYSTEM AND METHOD FOR PROCESSING RADAR IMAGERY 有权
标题翻译：系统和方法处理雷达图像
公开(公告)号：EP2370834B1
公开(公告)日：2015-09-02
申请号：EP09753180.0
申请日：2009-11-04
申请人： QinetiQ Limited
发明人： JAHANGIR, Mohammed , KEALEY, Paul, Graham , MOATE, Christopher, Paul , HILL, Robert, David
IPC分类号： G01S13/90
CPC分类号： G01S13/9023 , G01S13/9029

53. 发明授权

EP2452205B1 PROCESS FOR FILTERING INTERFEROGRAMS OBTAINED FROM SAR IMAGES ACQUIRED ON THE SAME AREA 有权
标题翻译：快速滤除干涉的方法从同一地区RECORDED SAR图像
公开(公告)号：EP2452205B1
公开(公告)日：2015-03-25
申请号：EP10730163.2
申请日：2010-07-02
申请人： Tele-Rilevamento Europa - T.R.E. Srl , Politecnico di Milano
发明人： FERRETTI, Alessandro , FUMAGALLI, Alfio , NOVALI, Fabrizio , DE ZAN, Francesco , RUCCI, Alessio , TEBALDINI, Stefano
IPC分类号： G01S13/90
CPC分类号： G01S13/90 , G01S13/9023 , G01S13/9035 , G06T2207/10044

54. 发明公开

EP2397866A1 Systems and methods for using an evidence grid to eliminate ambiguities in an interferometric radar 有权转让
标题翻译：中使用的证据电网的系统和方法用于消除干涉雷达歧义
公开(公告)号：EP2397866A1
公开(公告)日：2011-12-21
申请号：EP11168969.1
申请日：2011-06-07
申请人： Honeywell International, Inc.
发明人： McKitterick, John B.
IPC分类号： G01S13/72
CPC分类号： G01S13/723 , G01S3/42 , G01S3/48 , G01S13/003 , G01S13/87 , G01S13/878 , G01S13/9023
摘要： A system (100) includes an Interferometric radar (102) that transmits a first detection signal over a first spatial region and a second detection signal over a second spatial region. The second region has a first sub-region in common with the first region. The system further includes a processing device (104) that assigns a first occupancy value to a first cell in an evidence grid. The first cell represents the first sub-region, and the first occupancy value characterizes whether an object has been detected by the first detection signal as being present in the first sub-region. The processing device calculates, based on the first and second detection signals, the probability that the first occupancy value accurately characterizes the presence of the object in the first sub-region, and generates a data representation of the first sub-region based on the probability calculation.
摘要翻译：一种系统（100）包括干涉雷达（102）确实发送在第一空间区域和在第二空间区域的第二检测信号的第一检测信号。所述第二区域具有共同的第一子区域与所述第一区域。该系统包括：（104）做了进一步的处理装置的第一占用值分配给在网格证据的第一小区。第一小区darstellt第一子区域，并且所述第一占用值表征已经通过第一检测信号为存在于第一子区域中检测是否对象。所述处理装置计算基于所述第一和第二检测信号，所述概率并精确地设定第一占用值表征所述对象在所述第一子区域中的存在，和基因率基于概率的第一子区域的数据表示计算。

55. 发明公开

EP2382487A1 METHOD FOR INTERFEROMETRIC RADAR MEASUREMENTS 审中-公开
标题翻译：程序国米FERRO公制雷达测量
公开(公告)号：EP2382487A1
公开(公告)日：2011-11-02
申请号：EP09806010.6
申请日：2009-12-31
申请人： IDS Ingegneria Dei Sistemi S.p.A.
发明人： COPPI, Francesco , BERTONERI, Alessandro , DI PASQUALE, Gaetano
IPC分类号： G01S13/32 , G01S13/34 , G01S13/84
CPC分类号： G01S13/32 , G01S13/34 , G01S13/84 , G01S13/9023
摘要： A method for interferometric radar measurements that provides prearranging, at a target observed by the radar, of a transponder that is adapted to perform a frequency shift f
d of a radar signal received by the target, and to retransmit a response signal towards the radar. The frequency-shift is such that the signal (21), as received by the radar, can be separated from clutter (19) coming from the radar scenario, by a demodulation step (A), in particular a coherent demodulation step, and a phase extraction step (B), which may comprise a further demodulation step by a phasor that has a frequency equal to f
d . If these steps are carried out subsequently, it is possible to calculate the phase difference with respect to signals 22 and then measuring the displacement that target (2) carries out between such instants. In case of a plurality of targets in a same radar scenario, the use of a corresponding plurality of transponders with specific frequency-shifts allows separately demodulating the signals coming from each transponder. In case of variable frequency radar signals, in particular if the frequency is increased according to a predetermined pitch, i.e. a frequency step, the phase extracting step may provide sampling sequences of values of the response signal coming from respective resolution cells of the radar scenario, and applying the inverse discrete Fourier transform to such sequences, in order to display the target in a resolution cell that is located between a maximum distance available by the radar and the limit of range unambiguous. The method allows overcoming well-known prior art interferometric radar systems drawbacks, since it eliminates clutter, and allows resolving more target in a same radar scenario, or in a same resolution cell.

56. 发明公开

EP2370834A1 SYSTEM AND METHOD FOR PROCESSING RADAR IMAGERY 有权
标题翻译：系统和方法处理雷达图像
公开(公告)号：EP2370834A1
公开(公告)日：2011-10-05
申请号：EP09753180.0
申请日：2009-11-04
申请人： QinetiQ Limited
发明人： JAHANGIR, Mohammed , KEALEY, Paul, Graham , MOATE, Christopher, Paul , HILL, Robert, David
IPC分类号： G01S13/90
CPC分类号： G01S13/9023 , G01S13/9029
摘要： The present invention relates to a system and method for processing imagery, such as may be derived from a coherent imaging system e.g. a synthetic aperture radar (SAR). The system processes sequences of SAR images of a region taken in at least two different passes and generates Coherent Change Detection (CCD) base images from corresponding images of each pass. A reference image is formed from one or more of the CCD base images images, and an incoherent change detection image formed by comparison between a given CCD base image and the reference image. The technique is able to detect targets from tracks left in soft ground, or from shadow areas caused by vehicles, and so does not rely on a reflection directly from the target itself. The technique may be implemented on data recorded in real time, or may be done in post-processing on a suitable computer system.

57. 发明公开

EP2330435A1 Method to generate airport obstruction charts based on a data fusion between interferometric data using synthetic aperture radars positioned on spaceborne platforms and other types of data acquired by remote sensors 有权转让
标题翻译：一种用于生产基于数据的融合机场障碍物卡（AOC）的过程的基于卫星的干涉SAR和从远程传感器的其它数据
公开(公告)号：EP2330435A1
公开(公告)日：2011-06-08
申请号：EP10398007.4
申请日：2010-10-19
申请人： Ana-Aeroportos de Portugal, S.A.
发明人： Fernandes Rodrigues, Marco Alexandre , Monteiro Oliveira, Henrique José
IPC分类号： G01S13/90 , G01C15/00
CPC分类号： G01S13/9023
摘要： The proposed invention describes a method to generate Airport Obstruction Charts, based on a fusion between interferometric data acquired by Synthetic Aperture Radars positioned in spaceborne platforms, and other types of data acquired by remote sensors. It is characterized by the following stages;- Conversion of pre-existent analog data of the surveyed areas to digital format:-Vectorization of the data;- Data analysis already in digital format;- Generation of Digital Surface Model (MDS, being the input data structure to be used by the Land Change Detection Algorithm, in raster format;- Comparison between the initial Digital Surface Model and the new data acquired in a later epoch;- Comparison between the base Digital Surface Model (MDS) and the altimetric data structure derived from interferometric data obtained from the Synthetic Aperture Radars positioned in spaceborne platforms;- Registration and georeferencing of the Digital Surface Model (MDS);- Cut the image to ensure that all the surveyed area is correctly identified;- Resampling of the raster models to be compared with those obtained between the initial and latter epochs, in order to present the same number of pixels either in line or column, representing the same surveyed area;- Detection of land changes in order to compare the elevations in both digital surface models (MDS) obtained from different epochs, to produce a third raster model;- Overlay between the raster images of the objects considered as obstructions and the Airport Obstruction Chart in vector format;- New obstructions validation;- and dissemination of the new Airport Obstruction Charts to the relevant authorities.
摘要翻译：所提出的发明描述了一种方法，以生成机场障碍图的基础上，由合成孔径雷达空载平台定位，以及其他类型的远程传感器获得的数据的获取的干涉数据之间的融合。它是由以下步骤为特征的; - 被调查区域为数字格式的预先存在的模拟数据转换：数据存储-Vectorization; - 数据分析已经是数字格式; - 数字表面模型的生成（MDS，是输入由陆地变化检测算法以光栅格式中使用的数据结构; - ;基座数字表面模型（MDS）和高度测量数据结构之间的比较 - 初始数字表面模型和在以后的时代中获取的新数据之间的比较从空载平台定位在合成孔径雷达干涉测量获得的数据得出; - 注册和数字表面模型（MDS）的地理坐标 - 剪裁，保证了所有的测区被正确识别的图像 - 网格模型的重采样用这些最初的和后面的历元之间获得，以便呈现相同数量无论是在线或列中的像素的，表示被调查的是相同的比较一个; - 对以比较在这两个数字表面模型从不同时期获得的隆起（MDS），以产生第三光栅模型土地变化检测; - 视为障碍物和机场障碍图中的对象的光栅图像之间的覆盖矢量格式; - 新障碍物验证 - 和新的机场障碍图的有关当局的传播。

58. 发明公开

EP2017647A1 Method for processing data sensed by a synthetic aperture radar (SAR) and related remote sensing system 审中-公开
标题翻译：由SAR处理的方法，感测到的数据和相关联的远程传感器系统
公开(公告)号：EP2017647A1
公开(公告)日：2009-01-21
申请号：EP08425447.3
申请日：2008-06-25
申请人： Consiglio Nazionale delle Ricerche
发明人： Fornaro, Gianfranco , Serafino, Francesco , Soldovieri, Francesco
IPC分类号： G01S13/90
CPC分类号： G01S13/9029 , G01S13/9023 , G01S13/9035
摘要： The present invention relates to a method for processing data sensed by a synthetic aperture radar, said radar comprising one or more sensors (A 1 , ..., A M ) making a plurality of orbits O n , with n=1, ..., N, along which each one makes a plurality of detections of at least one area, at a radiation having a pre-set wavelength λ, so as to obtain an assembly of multipassage data making NxM images of said at least one area, each one comprised of a plurality of pixels, said method comprising preliminarily focusing of said assembly of multipassage data detected in azimuth and range variables and is characterized in that it then focuses with respect to elevation s and velocity v variables, according to the singular value decomposition technique.
The present invention further relates to a remote sensing synthetic aperture radar system.
摘要翻译：本发明涉及一种用于由合成孔径雷达感测到的处理数据的方法，所述雷达包括一个或多个传感器（A 1，...，AM）使轨道Ôn个复数，其中n = 1，... ，N，沿着每一个使得在至少一个区域的检测的复数，在具有预先设定的波长的辐射，说：“，以获得在多通道数据进行所述的N×M个的图像的组件的至少一个区域中，每一个由像素的多个，所述方法包括预聚焦在方位和范围可变检测多通道数据的所述组件的并且其特征在于在没有它然后相对于对焦至S和速度v变量，雅丁标高奇异值分解技术。本发明还涉及一个遥感合成孔径雷达系统。

59. 发明公开

EP1981120A1 Method for phase calibrating antennas in a radar system 有权转让
标题翻译： EEREM RADARSYSTEM中的VERFAHREN ZUR PHASENKALIBRIUNG VON ANTENNEN
公开(公告)号：EP1981120A1
公开(公告)日：2008-10-15
申请号：EP08103417.5
申请日：2008-04-07
申请人： Honeywell International Inc.
发明人： Backes, Glen B. , Reilly, Timothy J.
IPC分类号： H01Q3/26 , G01S7/40 , G01S13/90
CPC分类号： H01Q3/267 , G01S7/4017 , G01S13/9023 , G01S13/9035 , G01S2013/9064
摘要： A method for phase calibrating antennas in a radar system is disclosed. The method comprises providing a transmit antenna and two or more receive antennas, the receive antennas each in communication with a respective receiver channel. A radio frequency pulse having a leakage pulse is transmitted from the transmit antenna. The leakage pulse is received at each of the receive antennas and respective receiver channel. The relative phase change between the receive antennas is determined by using the leakage pulse as a reference signal.
摘要翻译：公开了一种在雷达系统中相位校准天线的方法。该方法包括提供发射天线和两个或更多个接收天线，每个接收天线各自与相应的接收机信道通信。从发射天线发射具有泄漏脉冲的射频脉冲。在每个接收天线和相应的接收机信道处接收泄漏脉冲。通过使用泄漏脉冲作为参考信号来确定接收天线之间的相对相位变化。

60. 发明授权

EP1019746B1 AVERAGING-AREA-CONSTRAINED ADAPTIVE INTERFEROMETRIC FILTER THAT OPTIMIZES COMBINED COHERENT AND NONCOHERENT AVERAGING 有权
标题翻译： AVERAGING成型领域的任何受限自适应干涉滤波组合相干和非相干平均优化
公开(公告)号：EP1019746B1
公开(公告)日：2007-03-14
申请号：EP99963129.4
申请日：1999-06-25
申请人： RAYTHEON COMPANY
发明人： FRANKOT, Robert, T.
IPC分类号： G01S13/90
CPC分类号： G01S7/295 , G01S13/9023 , H03H21/0012
摘要： A family of multiple scale adaptive filters (20) and filtering methods (20) that automatically adapt their impulse response width to local data characteristics, optimizing the accuracy, yield, and/or detail of interferometric measurements. A prefilter (10) with fixed impulse response width is applied to a complex interferogram. The phase of the prefiltered complex interferogram is unwrapped (25). Then, a weighted combination of the phase-unwrapped, fixed-filtered interferograms is computed (30) using a data-dependent criterion function. The resulting weighting function at each resolution element is typically a nonlinear function of interferogram magnitude and coherence for each fixed filter ouput at that resolution element.

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