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公开(公告)号：US5745071A
公开(公告)日：1998-04-28
申请号：US814037
申请日：1997-03-10
CPC分类号： G01S13/878 , G01S13/003 , G01S13/30 , G01S13/753
摘要： The method and apparatus precisely identifies and locates an object which resonates in response to signals of at least one and, more typically, two resonant frequencies. The locating apparatus includes a transmitter for concurrently transmitting signals having a resonant frequency and signals having a non-resonant frequency toward the resonant object. The locating apparatus also includes at least two receivers for receiving reflected signals having the resonant frequency and the non-resonant frequency. The locating apparatus further includes a signal processor for locating the resonant object based upon the reflected signals detected by the receivers. The signal processor has multiple channels, one of which is associated with each receiver, for separately processing the reflected signals received over time by each of the receivers. Within each channel, the signal processor significantly reduces signal clutter based upon respective differences between the reflected signals having the resonant frequency and the reflected signals having the non-resonant frequency which were received by the respective receiver. By reducing signal clutter in the received signals, the locating apparatus identifies and locates the resonant object with more precision.
摘要翻译： 该方法和装置精确地识别和定位响应于至少一个和更典型地两个谐振频率的信号而谐振的对象。 该定位装置包括一个发射器，用于同时向谐振物体传输具有共振频率的信号和具有非共振频率的信号。 定位装置还包括用于接收具有共振频率和非共振频率的反射信号的至少两个接收器。 定位装置还包括信号处理器，用于基于由接收器检测到的反射信号来定位谐振物体。 信号处理器具有多个通道，其中一个通道与每个接收器相关联，用于分别处理每个接收器随时间接收的反射信号。 在每个通道内，信号处理器基于具有共振频率的反射信号和具有非共振频率的反射信号之间的相应差异，显着地减少了信号杂波，这些信号由相应的接收机接收。 通过减少接收信号中的信号杂波，定位装置更精确地识别和定位谐振对象。
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公开(公告)号：US5682168A
公开(公告)日：1997-10-28
申请号：US650682
申请日：1996-05-20
IPC分类号： H01Q1/32
CPC分类号： H01Q1/3275 , H01Q1/3291
摘要： One or more antenna elements are submerged beneath a faired cover over a roof supporting member of a motor vehicle or hidden behind or as part of the front grill. Usually a conductive support extends behind the antenna elements and are electrically isolated therefrom to form the ground plane of the antenna. In some cases the antennas can be the structural members electrically isolated from the remainder of the body, but physically connected thereto. RF absorbers may be positioned spaced from radiating antenna elements to prevent antenna cross talk and exposure of occupants of the vehicle to high RF power densities. The antenna elements are especially useful in providing collision avoidance radar.
摘要翻译： 一个或多个天线元件被淹没在机动车辆的屋顶支撑构件之下的公路盖上，或者隐藏在前格栅的后面或作为前格栅的一部分。 通常，导电支撑件延伸在天线元件之后并与之隔离，以形成天线的接地平面。 在一些情况下，天线可以是与身体的其余部分电隔离但与其物理连接的结构部件。 RF吸收器可以被定位成与辐射天线元件隔开，以防止天线串扰和车辆乘员暴露于高RF功率密度。 天线元件在提供防撞雷达方面特别有用。
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公开(公告)号：US5473332A
公开(公告)日：1995-12-05
申请号：US288373
申请日：1994-08-10
CPC分类号： G01S7/023 , G01S7/2813 , G01S7/2923 , G01S7/36 , G01S2007/2883
摘要： Improvement of radar sign-to-noise ratio and detection sensitivity in radar systems is achieved by methods employing the subtraction of the unwanted radio frequency interference, RFI, or "clone" signals thereof, from the total received signal. The Clone signals are appropriately adjusted in phase and amplitude, and are obtained from an auxilliary broad beam antenna or from a delayed sample from the system's principal antenna. When multiple RFI signals at different frequencies are present, the entire receive band is subdivided into a plurality of frequency sub-ranges.
摘要翻译： 通过从总接收信号中减去不需要的射频干扰，RFI或“克隆”信号的方法，实现了雷达系统中雷达信噪比和检测灵敏度的提高。 克隆信号在相位和幅度上进行适当调整，并从辅助宽波束天线或来自系统主天线的延迟采样获得。 当存在不同频率的多个RFI信号时，整个接收频带被细分为多个频率子范围。
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公开(公告)号：US5406290A
公开(公告)日：1995-04-11
申请号：US236337
申请日：1994-05-02
CPC分类号： G01S7/064 , G01S13/66 , G01S13/87 , G01S7/024 , G01S13/0209 , G01S2013/0272 , G01S7/412 , G01S7/417
摘要： An interceptor's point of impact on a targeted missile is quickly revealed in the milliseconds preceeding and following the impact by illuminating the target with radar signals at a high pulse repetition rate and observing the reflected radar echoes on an A-scope display. The position within the returned radar echo of a double echo and related changing phenomenon indicates the point of impact. Failing intercept, the miss distance is computed from the relative slant ranges to the targeted missile, the interceptor, and the double echo. The type warhead killed is revealed by a spectrograph slaved to the radar's antenna. Various techniques assist with the interpretation of the displayed patterns, including subtraction of previously stored patterns and display of the difference, display of characteristic patterns of various known missiles and interceptors stored in "look up" tables, and neural networks.
摘要翻译： 拦截器对目标导弹的影响点将在雷达信号以高脉冲重复频率照射目标的前后的毫秒内迅速显现，并观察A范围显示屏上的反射雷达回波。 双回波回波雷达回波位置及相关变化现象表明了该点的影响。 失误的拦截距离是从相对倾斜的范围计算到目标导弹，拦截器和双重回波。 杀死的类型的弹头是由一个从属于雷达天线的光谱仪显露出来的。 各种技术有助于对所显示的图案的解释，包括减去先前存储的图案和差异的显示，存储在“查找”表格中的各种已知导弹和拦截器的特征图案的显示以及神经网络。
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公开(公告)号：US5459442A
公开(公告)日：1995-10-17
申请号：US377772
申请日：1995-01-23
申请人： Jesse C. James
发明人： Jesse C. James
摘要： An adjustable phase shifter is formed of an RF transmission line having an internal cavity, in which the phase shift produced is determined in part by a mound of flowable dielectric material in the internal cavity. An inlet tube defines a chute for dispensing the dielectric material into the internal cavity and a capped outlet tube connected to a bottom end of the internal cavity defines another gravity chute through which the dielectric material is removed to lower the height of the mound, when the cap is removed from the tube. The electrical length of the phase shifter is increased with addition of dielectric material and decreased with removal thereby varying the effective length of the RF transmission line and the phase shift produced on the RF that propagates therethrough.
摘要翻译： 可调移相器由具有内腔的RF传输线形成，其中产生的相移部分地由内腔中的可流动电介质材料的堆积确定。 入口管限定用于将介电材料分配到内部空腔中的滑槽，并且连接到内部空腔的底端的加盖出口管限定另一个重力滑槽，通过该滑槽除去介电材料以降低墩的高度，当 帽从管中取出。 移相器的电长度随着电介质材料的增加而增加，随着去除而减小，从而改变RF传输线的有效长度以及通过其传播的RF产生的相移。
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公开(公告)号：US5596324A
公开(公告)日：1997-01-21
申请号：US353189
申请日：1994-12-09
申请人： Jesse C. James
发明人： Jesse C. James
IPC分类号： G01S7/40 , G01S13/02 , G01S13/75 , G01S13/76 , H01H9/30 , H01H9/50 , H01H9/54 , H01Q3/26 , H01Q3/44 , H01Q13/28 , H01Q13/22
CPC分类号： G01S7/4052 , H01H9/542 , H01P7/06 , H01Q13/28 , H01Q3/2676 , H01Q3/44 , G01S13/756 , G01S13/767 , H01H2009/545 , H01H9/30 , H01H9/50
摘要： Microwave devices incorporate at least one photosensitive baffle that is selectively illuminated changing the baffle's electronic characteristic from being transparent to being reflective of microwave energy. The baffle serves as a gate, tuning element, reflector and the like. Various forms of photosensitive baffles and microwave devices are presented.
摘要翻译： 微波装置包括至少一个感光挡板，其被选择性地照射，从而使挡板的电子特性从透明到反射微波能量。 挡板用作门，调谐元件，反射器等。 介绍了各种形式的感光挡板和微波装置。
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公开(公告)号：US20190243328A1
公开(公告)日：2019-08-08
申请号：US15889954
申请日：2018-02-06
摘要： A web jam detector and associated method are provided for detecting a jam of feedstock material in a scrap chopper. A web detection bar, mounted to the scrap chopper, includes a plurality of web detection fingers. The plurality of web detection fingers are made of an electrically conductive material, are electrically connected to and extend outwardly from the web detection bar, and are positioned to contact the feedstock material when the scrap chopper is in a closed position. A web jam detection circuit is electrically connected to the web detection bar. In operation, the web jam detection circuit supplies direct current electricity to the web detection bar and generates feedback signals based on a voltage of the web detection bar. The feedback signals are indicative of the presence or absence of the feedstock material at the plurality of web detection fingers.
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公开(公告)号：US5548461A
公开(公告)日：1996-08-20
申请号：US318442
申请日：1994-10-05
申请人： Jesse C. James
发明人： Jesse C. James
IPC分类号： G01S7/40 , G01S13/02 , G01S13/75 , G01S13/76 , H01H9/30 , H01H9/50 , H01H9/54 , H01Q3/26 , H01Q3/44 , H01Q13/28
CPC分类号： G01S7/4052 , H01H9/542 , H01Q13/28 , H01Q3/2676 , H01Q3/44 , G01S13/756 , G01S13/767 , H01H2009/545 , H01H9/30 , H01H9/50
摘要： Placed in electrical circuit in shunt of the electrodes that supply current to a protected device and optically coupled to the location in the protected device where an electric arc is most likely to occur, a photosensitive device, responsive to illumination created by such an electric arc, switches to a conductive state, thereby short circuiting the electrodes feeding current to the arc and the arc is quickly extinguished.
摘要翻译： 放置在电路分流器中的电路中，该电路将电流提供给受保护的器件，并且光耦合到受保护器件中最可能发生电弧的位置，响应于由这种电弧产生的照明的光敏器件， 切换到导通状态，从而短路电极将电流馈送到电弧并且电弧快速熄灭。
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