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1. 发明授权

US10955544B2 Measurement setup, reference reflector as well as method for measuring attenuation 有权
公开(公告)号：US10955544B2
公开(公告)日：2021-03-23
申请号：US16008979
申请日：2018-06-14
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed , Frank Gumbmann , Tobias Koeppel , Michael Freissl , Christian Evers , Thomas Fischer
IPC分类号： G01S13/89 , G06T7/73
摘要： A measurement setup for measuring attenuation through an irregular surface of a device under test is described. The measurement setup comprises a positioning system, a reference reflector having a collection of diffuse scattering members, and a three dimensional imaging system. The measurement setup has a reference state and a measurement state, wherein respective images are taken in the different states. The imaging system is configured to compare the images taken in the reference state and the measurement state to determine the attenuation of the device under test. Further, a reference reflector as well as a method for measuring attenuation are described.

2. 发明申请

US20140247182A1 METHOD, SYSTEM AND CALIBRATION TARGET FOR THE AUTOMATIC CALIBRATION OF AN IMAGING ANTENNA ARRAY 有权
标题翻译：方法，用于自动校准成像天线阵列的系统和校准目标
公开(公告)号：US20140247182A1
公开(公告)日：2014-09-04
申请号：US14353047
申请日：2013-02-20
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed
IPC分类号： G01S7/40 , H01Q3/26 , G01S13/89
CPC分类号： G01S7/4026 , G01S13/89 , H01Q3/267
摘要： The system is used for the automatic calibration of an imaging array using an evaluation unit. The array transmits signals and receives the signals reflected from a calibration object of known shape. The calibration object provides at least one diffuse reflector. In the evaluation method, position coordinates of the calibration object are entered, and the following method steps are implemented after the measurement of the reflected signals: (i) calculate the reflections of the calibration object, (ii) calculate calibration data, (iii) prepare an image of the calibration object with the use of the calibration data, (iv) determine corrected position coordinates by evaluating the image of the at least one diffuse reflector, and (v) implement steps (i) to (iv) with corrected position coordinates.
摘要翻译：该系统用于使用评估单元自动校准成像阵列。阵列传输信号并接收从已知形状的校准对象反射的信号。校准对象提供至少一个漫反射器。在评估方法中，输入校准对象的位置坐标，并在测量反射信号之后实施以下方法步骤：（i）计算校准对象的反射，（ii）计算校准数据，（iii）通过使用校准数据准备校准对象的图像，（iv）通过评估至少一个漫反射器的图像来确定校正的位置坐标，以及（v）实施具有校正位置的步骤（i）至（iv）坐标

3. 发明授权

US11378678B2 Method as well as system for determining the three-dimensional alignment of components of a radar system 有权
公开(公告)号：US11378678B2
公开(公告)日：2022-07-05
申请号：US16533527
申请日：2019-08-06
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Steffen Neidhardt , Frank Gumbmann , Sherif Sayed Ahmed , Benedikt Simper
IPC分类号： G01S13/89 , G01S13/36 , H01Q1/42 , G01S7/40 , G01S7/35
摘要： A method for determining the three-dimensional alignment of components of a radar system is described. The radar system is provided that comprises at least one portion which is permeable by radar signals. The radar system is imaged by using millimeter waves emitted by an imaging system. In the image obtained, it is determined the highest magnitude reflection coinciding with at least one of an expected location and an expected distance of the surface of a first component of the radar system being of interest. At least one of the position and the distance of that surface is determined. From the measurement, the relative phase information received from each portion of that surface at the determined position and/or the determined distance is obtained. Processing the phase information obtained so as to obtain the azimuth and tilt of the surface. Further, a testing system is described.

4. 发明授权

US10261177B2 System and a method for the efficient scanning of objects 有权
公开(公告)号：US10261177B2
公开(公告)日：2019-04-16
申请号：US14917973
申请日：2015-01-23
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed , Olaf Ostwald , Christian Evers
IPC分类号： G01S13/88 , G01V8/00 , G01S13/89 , G01S13/86
摘要： The present disclosure relates to systems and methods for scanning objects and persons, for example, persons in security gates, by means of microwave radiation. Such a system includes an arrangement of several panels between which an angled walk-through passage is formed.

5. 发明授权

US11947001B2 Measurement setup, reference reflector as well as method for measuring attenuation 有权
公开(公告)号：US11947001B2
公开(公告)日：2024-04-02
申请号：US17178648
申请日：2021-02-18
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed , Frank Gumbmann , Tobias Koeppel , Michael Freissl , Christian Evers , Thomas Fischer
IPC分类号： G01S13/89 , G06T7/73
CPC分类号： G01S13/89 , G06T7/74
摘要： A measurement setup for measuring attenuation through an irregular surface of a device under test is described. The measurement setup includes a positioning system, a reference reflector, and a three dimensional imaging system. The measurement setup has a reference state and a measurement state, wherein respective images are taken in the different states. The imaging system is configured to compare the images taken in the reference state and the measurement state to determine the attenuation of the device under test. Further, a reference reflector as well as a method for measuring attenuation are described.

6. 发明授权

US11656335B2 System and method for detecting aircraft signatures 有权
公开(公告)号：US11656335B2
公开(公告)日：2023-05-23
申请号：US16292472
申请日：2019-03-05
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed
IPC分类号： G01S7/41 , G01S13/00 , G01S13/58
CPC分类号： G01S7/415 , G01S13/003 , G01S13/58
摘要： A radar system for detecting aircraft signatures is provided. The system comprises a plurality of radar clusters where each radar cluster further comprises a plurality of transmit antennas and a plurality of receive antennas. In this context, the plurality of transmit antennas and the plurality of receive antennas are co-located within each radar cluster. Furthermore, the plurality of transmit antennas are time synchronized and/or phase coherent with the plurality of receive antennas.

7. 发明授权

US10330785B2 Method and system for millimeter-wave image reconstruction 有权
公开(公告)号：US10330785B2
公开(公告)日：2019-06-25
申请号：US14683762
申请日：2015-04-10
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed
IPC分类号： G01S13/02 , G01S13/89 , G01S13/88 , G01S13/42 , G01S13/90
摘要： The invention relates to a technique for millimeter-wave active image reconstruction. According to a method aspect, Tx subgroups of transmitting antennas of an antenna array are established. Coherent processing of measurement data is performed for each Tx subgroup and coherent subimages are achieved. Magnitudes of complex numbers are calculated to obtain a magnitude subimage for each of the coherent subimages and an object image is generated by adding the magnitude subimages.

8. 发明申请

US20200049814A1 METHOD AS WELL AS SYSTEM FOR DETERMINING THE THREE-DIMENSIONAL ALIGNMENT OF COMPONENTS OF A RADAR SYSTEM 审中-公开
公开(公告)号：US20200049814A1
公开(公告)日：2020-02-13
申请号：US16533527
申请日：2019-08-06
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Steffen Neidhardt , Frank Gumbmann , Sherif Sayed Ahmed , Benedikt Simper
IPC分类号： G01S13/89 , G01S13/36 , G01S7/35 , G01S7/40 , H01Q1/42
摘要： A method for determining the three-dimensional alignment of components of a radar system is described. The radar system is provided that comprises at least one portion which is permeable by radar signals. The radar system is imaged by using millimeter waves emitted by an imaging system. In the image obtained, it is determined the highest magnitude reflection coinciding with at least one of an expected location and an expected distance of the surface of a first component of the radar system being of interest. At least one of the position and the distance of that surface is determined. From the measurement, the relative phase information received from each portion of that surface at the determined position and/or the determined distance is obtained. Processing the phase information obtained so as to obtain the azimuth and tilt of the surface. Further, a testing system is described.

9. 发明申请

US20150293221A1 METHOD AND SYSTEM FOR MILLIMETER-WAVE IMAGE RECONSTRUCTION 审中-公开
标题翻译：用于微波图像重建的方法和系统
公开(公告)号：US20150293221A1
公开(公告)日：2015-10-15
申请号：US14683762
申请日：2015-04-10
申请人： Rohde & Schwarz GmbH & Co. KG
发明人： Sherif Sayed Ahmed
IPC分类号： G01S13/89 , G01S13/02
CPC分类号： G01S13/89 , G01S13/02 , G01S13/426 , G01S13/887 , G01S13/90
摘要： The invention relates to a technique for millimeter-wave active image reconstruction. According to a method aspect, Tx subgroups of transmitting antennas of an antenna array are established. Coherent processing of measurement data is performed for each Tx subgroup and coherent subimages are achieved. Magnitudes of complex numbers are calculated to obtain a magnitude subimage for each of the coherent subimages and an object image is generated by adding the magnitude subimages.
摘要翻译：本发明涉及一种用于毫米波主动图像重建的技术。根据方法方面，建立天线阵列的发射天线的Tx子组。对每个Tx子组执行测量数据的相干处理，并实现相干子图像。计算复数的大小以获得每个相干子图像的幅度子图像，并且通过添加幅度子图像来生成对象图像。

10. 发明申请

US20150054679A1 METHOD AND DEVICE FOR DETECTING STRUCTURES IN AN OBJECT UNDER INVESTIGATION 有权
标题翻译：用于检测调查对象内的结构的方法和装置
公开(公告)号：US20150054679A1
公开(公告)日：2015-02-26
申请号：US14388727
申请日：2013-03-28
申请人： ROHDE & SCHWARZ GMBH & CO. KG
发明人： Sherif Sayed Ahmed
IPC分类号： G01S7/41 , G01S13/90
CPC分类号： G01S7/41 , G01S7/411 , G01S13/887 , G01S13/89 , G01S13/90
摘要： A method for detecting structures (41, 42) such as edges and material transitions on and/or in an object (40) under investigation has an antenna arrangement which transmits microwave signals and registers the signals reflected from the object (40) under investigation in magnitude and phase. A three-dimensional image of the object (40) under investigation is reconstructed at sampling points of the object under investigation from the latter. It operates with the method steps: determination of a spatial position of a structure (41, 42) from the magnitude of the reflected signal, determination of the sign of the reflection coefficient of the reflected signal at the spatial position of the structure (41, 42), and identification of structures (41, 42) on the basis of the spatial arrangement of the sign of the reflection coefficient.
摘要翻译：用于检测在被研究对象（40）上和/或物体上的结构（41,42）的结构（41,42）的方法具有发送微波信号并将被调查物体（40）反射的信号登记在天线中的方法幅度和相位。被调查对象（40）的三维图像在被调查对象的采样点被重建。它采用以下方法步骤：从反射信号的大小确定结构（41,42）的空间位置，确定结构（41,42）的空间位置处的反射信号的反射系数的符号， 42），以及基于反射系数的符号的空间排列来识别结构（41,42）。

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