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1. 发明授权

US5534873A Near field RCS test facility and testing method 失效
标题翻译：近场RCS测试设备和测试方法
公开(公告)号：US5534873A
公开(公告)日：1996-07-09
申请号：US385057
申请日：1995-02-07
申请人： Alan R. Weichman , Barton G. Ferrell , William G. Butters , Gregory Murden , Phillip D. Alldredge , L. Adam Latham , Mike J. Courtney , Paul J. Degroot
发明人： Alan R. Weichman , Barton G. Ferrell , William G. Butters , Gregory Murden , Phillip D. Alldredge , L. Adam Latham , Mike J. Courtney , Paul J. Degroot
IPC分类号： G01S7/41 , G01S13/86 , G01S7/40
CPC分类号： G01S7/414 , G01S13/86 , G01S7/411
摘要： A method for determining the far field radar signature of relatively large and complex objects, like a fighter aircraft, and the facility to provide the data for the method. The method includes reflecting different frequencies of near field radar energy off of an object while translating the object in a radial direction with respect to the radar so the resulting radar return includes a moving signal representative of the radar return of the object and a stationary return representative of environmental clutter. The environmental clutter and R 4 amplitude variations caused by signal strength variations due to the different overall reflection distances during translation are removed from the radar signal. Multipath reflections may also be removed. The resultant signal is transformed from a spherical wave to a cylindrical wave so that for objects having a major dimension that is presented to the radar with respect to a much smaller minor dimension at right angles thereto, the radar signature as determined by the method is almost identical to that obtainable at a far field radar range. In addition, the facility includes an electromagnetically shielded building, object translating devices with position feedback, object rotators, and a computer to perform the transformations.
摘要翻译：一种确定相对较大和复杂物体（如战斗机）的远场雷达签名的方法，以及提供该方法数据的设施。该方法包括将物体的近场雷达能量的不同频率反射离开物体，同时相对于雷达在径向方向上折射物体，使得所得到的雷达返回包括表示物体的雷达返回的运动信号和固定回波代表的环境杂乱。从雷达信号中去除由于平移期间不同的总反射距离引起的信号强度变化引起的环境杂波和R 4振幅变化。多路径反射也可能被删除。所得到的信号从球面波变换为圆柱波，使得对于具有相对于与其成直角的小得多的小尺寸呈现给雷达的主要尺寸的物体，由该方法确定的雷达签名几乎与远场雷达射程相同。此外，该设施包括电磁屏蔽建筑物，具有位置反馈的物体平移装置，物体旋转器和用于执行变换的计算机。

2. 发明授权

US4328461A Apparatus for and method of measuring a high voltage electric field 失效
标题翻译：高压电场测量装置及测量方法
公开(公告)号：US4328461A
公开(公告)日：1982-05-04
申请号：US54005
申请日：1979-07-02
申请人： William G. Butters , Joseph E. Lee
发明人： William G. Butters , Joseph E. Lee
IPC分类号： G01R15/14 , G01R15/22 , G01R29/08 , G01N31/02
CPC分类号： G01R15/22 , G01R15/144 , G01R29/0878
摘要： Apparatus for measuring a high voltage electric field, such as may be used in simulating lightning strikes or the like on a test specimen, is disclosed. In general, a capacitive electric field sensor is disclosed which utilizes a pair of spaced conductors or electrodes and which is placed in the field to be measured. The conductors shield a device within the sensor which generates a signal responsive to the intensity of the electric field. This signal is transmitted to a remote data acquisition system by means of non-electrically conductive data transmission lines (e.g., fiber optic transmission lines) so as to electrically isolate the sensor and the data acquisition system whereby the sensor only minimally distorts or affects the field being measured thereby. A method for measuring high voltage electric fields is also disclosed.
摘要翻译：公开了用于测量高压电场的装置，例如可以用于模拟试样上的雷击等。通常，公开了一种电容式电场传感器，其利用一对间隔开的导体或电极并将其放置在要测量的场中。导体屏蔽传感器内的器件，产生响应于电场强度的信号。该信号通过非导电数据传输线（例如，光纤传输线）传输到远程数据采集系统，以便电隔离传感器和数据采集系统，由此传感器仅最小程度地扭曲或影响该领域由此进行测量。还公开了一种用于测量高压电场的方法。

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