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公开(公告)号：US5422477A
公开(公告)日：1995-06-06
申请号：US130509
申请日：1993-10-01
摘要： An optical sensing system with a rotation sensor head for sensing the rotation of a rotatable object while simultaneously sensing the position of a displaceable object with a position sensor head. An electro-optical unit outputs a modulated optical signal and a chirped rf signal. The envelope of the modulated optical signal has a phase that has a known relation to the phase of the chirped rf signal. The electro-optical unit is coupled to a light guide element and receives and transmits the modulated optical signal along an optical path for reflection off a disk secured to the rotatable object in order to provide a rotation sensing optical signal. A transducing unit receives the rf signal at one input and has another input optically coupled to receive the rotation sensing optical signal while simultaneously receiving position sensing optical signals from the position sensor heads. The transducing unit produces a multi-frequency electrical signal which includes first and second frequencies, the first frequency corresponding to the rotation sensor location and the difference between the first and second frequencies corresponding to the rotation rate of the rotatable object. A rotation detecting unit coupled to the output of the transducing unit processes the multi-frequency signal in order to determine the difference frequency corresponding to the rotation rate of the rotatable object.
摘要翻译： 一种光学感测系统，其具有用于感测可旋转物体的旋转的旋转传感器头，同时利用位置传感器头感测位移物体的位置。 电光单元输出调制光信号和啁啾rf信号。 调制光信号的包络具有与啁啾rf信号的相位已知关系的相位。 电光单元耦合到光导元件，并且沿着光路接收并发送经调制的光信号，用于从固定到可旋转对象的盘反射，以提供旋转感测光信号。 转换单元在一个输入处接收rf信号，并具有光耦合的另一个输入，以接收旋转感测光信号，同时从位置传感器头接收位置感测光信号。 转换单元产生多频电信号，该多频电信号包括第一和第二频率，对应于旋转传感器位置的第一频率以及对应于可旋转物体的转速的第一和第二频率之间的差。 耦合到转换单元的输出的旋转检测单元处理多频信号，以便确定与可旋转物体的旋转速度对应的差频。
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公开(公告)号：US5467942A
公开(公告)日：1995-11-21
申请号：US130519
申请日：1993-10-01
摘要： An optical sensing system for sensing the temperature at a first location, including: electro-optical unit for producing a modulated optical signal and a light guide unit for receiving and transmitting the modulated optical signal along an optical path. The optical system further includes temperature sensing fiber which receives and guides the modulated optical signal along a temperature sensing optical path. One portion of the modulated optical signal serves as a reference optical signal and another portion of the modulated optical signal serves as a target optical signal. The optical sensor system also has a transducing unit, which receives the reference optical signal, the target optical signal having first and second time delays with respect to a chirped rf signal from the electro-optical unit. The transducing unit produces a multi-frequency electrical signal which includes a first frequency corresponding to the first time delay a second frequency corresponding to the second time delay. The optical sensor system further has a temperature detecting means coupled to the output of the transducing unit which processes the multi-frequency signal and determines a difference frequency corresponding to the temperature at the first location.
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公开(公告)号：US5294075A
公开(公告)日：1994-03-15
申请号：US752109
申请日：1991-08-28
摘要： An optical position sensing system for sensing the position of a displaceable element. An electro-optical unit outputs a modulated optical signal and a chirped rf signal. The envelope of the modulated optical signal has a phase that has a known relation to the phase of the chirped rf signal. The electro-optical unit is coupled to a light guide element and receives and transmits the modulated optical signal along an optical path for reflection off a surface of the displaceable element in order to provide a position sensing optical signal. A reference reflecting element is disposed in the optical path upstream of the displaceable element for partially reflecting the transmitted modulated optical signal in order to provide a reference optical signal. A transducing unit receives the rf signal at one input and has another input optically coupled for receiving the position sensing optical signal and the reference optical signal which have, respectively, first and second time delays with respect to the chirped rf signal. The transducing unit produces a multi-frequency electrical signal which includes first and second frequencies corresponding to the first and second time delays, respectively. A position detecting unit coupled to the output of the transducing unit processes the multi-frequency signal in order to determine a difference frequency corresponding to the difference between the first and second frequencies and representing the position of the displaceable element.
摘要翻译： 一种光学位置检测系统，用于感测位移元件的位置。 电光单元输出调制光信号和啁啾rf信号。 调制光信号的包络具有与啁啾rf信号的相位已知关系的相位。 电光单元耦合到光导元件，并且沿着光路接收并发射调制的光信号，用于反射离开可移位元件的表面，以便提供位置感测光信号。 参考反射元件设置在可移动元件的上游的光路中，用于部分地反射发射的调制光信号，以便提供参考光信号。 转换单元在一个输入处接收rf信号，并且具有光耦合的另一输入，用于接收相对于啁啾rf信号分别具有第一和第二时间延迟的位置感测光信号和参考光信号。 转换单元产生分别包括对应于第一和第二时间延迟的第一和第二频率的多频电信号。 耦合到转换单元的输出的位置检测单元处理多频信号，以便确定与第一和第二频率之间的差对应的差频，并表示可移位元件的位置。
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4.发明授权Method and apparatus using variations in power modulation to determine an interfering mobile terminal 有权使用功率调制变化来确定干扰移动终端的方法和装置公开(公告)号：US07155168B2
公开(公告)日：2006-12-26
申请号：US10022981
申请日：2001-12-17
IPC分类号： H04B17/00
CPC分类号： H04B7/18508 , H04W52/08
摘要： A method and apparatus for identifying which one of a plurality of mobile terminals in communication with a ground-based base station, via a transponded satellite, is causing interference with a non-target satellite orbiting in a vicinity of the transponded satellite. The method involves using the base station to sequentially check each of the mobile terminals to identify which one is causing the interference. The check is made by the base station commanding each mobile terminal to modulate the power level of its transmitted signals and then checking with an operator of the interfered with non-target satellite to see if the interference condition has changed. Once the mobile terminal causing the interference condition is identified, the base station can command the mobile terminal to reduce its transmit power accordingly.
摘要翻译： 一种用于识别通过转发卫星与地面基站进行通信的多个移动终端中的哪一个的方法和装置正在对转发卫星周围的非目标卫星进行轨道运动。 该方法包括使用基站顺序地检查每个移动终端以识别哪一个正在引起干扰。 由基站指令每个移动终端对其发射信号的功率电平进行检查，然后与受干扰的非目标卫星的操作者进行检查，以查看干扰状况是否改变。 一旦确定了造成干扰状况的移动终端，则基站可以命令移动终端相应地降低其发射功率。
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公开(公告)号：US06417803B1
公开(公告)日：2002-07-09
申请号：US09825575
申请日：2001-04-03
IPC分类号： H01Q300
CPC分类号： H01Q1/1257 , G01S3/20 , H01Q1/28
摘要： An apparatus and method for correcting antenna beam misalignment between a transmit antenna and a receive antenna on a mobile platform such as an aircraft. The beam alignment method makes use of sequential lobing to determine the pointing angles in azimuth and elevation of a receive beam received by the receive antenna. For the transmit antenna, sequential lobing is used for the transmit antenna beam transmitted to a transponded satellite and then to a ground station. The ground station performs received signal strength indicator (RSSI) measurements and transmits these measurements back to the aircraft 16 via the target satellite. From these measurements, the beam misalignment between the receive and transmit antenna beams, both in azimuth and elevation, can be determined and a correction applied to the transmit antenna. The beam alignment procedure of the present invention can be implemented without interfering with normal use of the transmit and receive antennas and further ensures that interference with satellites adjacent to the target satellite will not occur during return link transmissions from the aircraft to the ground station.
摘要翻译： 一种用于校正诸如飞行器的移动平台上的发射天线和接收天线之间的天线波束未对准的装置和方法。 光束对准方法利用顺序波纹来确定由接收天线接收的接收波束的方位角和仰角的指向角度。 对于发射天线，顺序波峰被用于发送到转发卫星然后到地面站的发射天线波束。 地面站执行接收信号强度指示（RSSI）测量，并通过目标卫星将这些测量值发送回飞机16。 从这些测量可以确定方位角和仰角之间的接收和发射天线波束之间的波束未对准，并且将校正应用于发射天线。 可以实现本发明的光束对准过程，而不干扰发射和接收天线的正常使用，并进一步确保在从飞行器到地面站的返回链路传输期间不会发生与目标卫星相邻的卫星的干扰。
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6.发明授权
公开(公告)号：US4832433A
公开(公告)日：1989-05-23
申请号：US948339
申请日：1986-12-31
CPC分类号： H04B10/806 , H01Q3/2676
摘要： The corporate feed network employs light emitting opto-electronic components, such as laser diodes (12), connected together in a string (14) for distributing RF, microwave, MMW, digital signals, and pulse modulated light. Each diode provides two ports or facets which are coupled to optical fibers (16, 18) to connect to an active phased array antenna, for example. The diodes are selected in number and impedance to provide a good wideband impedance match to the RF/microwave/MMW/digital driving source. Multiple series strings of diodes may be employed, connected in parallel for larger corporate feed structures.
摘要翻译： 公司饲料网络采用发光光电子部件，例如用于分配RF，微波，MMW，数字信号和脉冲调制光的串（14）连接在一起的激光二极管（12）。 例如，每个二极管提供耦合到光纤（16,18）以连接到有源相控阵天线的两个端口或小面。 二极管的数量和阻抗被选择，以提供与RF /微波/ MMW /数字驱动源的良好的宽带阻抗匹配。 可以使用多个串联串联的二极管，并联连接用于较大的公司进料结构。
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7.发明授权Soft handoff method and apparatus for mobile vehicles using directional antennas 有权使用定向天线的移动车辆的软切换方法和装置公开(公告)号：US09306657B2
公开(公告)日：2016-04-05
申请号：US11314647
申请日：2005-12-21
CPC分类号： H04B7/18506 , H01Q1/28 , H01Q1/283 , H01Q1/3208 , H01Q3/2611 , H04W36/08 , H04W36/18 , H04W84/06
摘要： A method of providing a communication link for a mobile platform. The method may involve generating a single beam and controlling the single beam to simultaneously generate first and second communication lobes from the single beam, with the first communication lobe being steered to communicate with a first base transceiver station (BTS). The method may further involve simultaneously using the second communication lobe to communicate with the second BTS and fading out the first lobe so that communication with the mobile platform is transferred to the second BTS.
摘要翻译： 一种为移动平台提供通信链路的方法。 该方法可以包括生成单个波束并且控制单个波束以同时从单个波束产生第一和第二通信波瓣，其中第一通信波瓣被引导以与第一基站收发器（BTS）进行通信。 该方法可以进一步包括同时使用第二通信波瓣与第二BTS进行通信，并使第一波瓣衰落，使得与移动平台的通信被传送到第二BTS。
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公开(公告)号：US20100088924A1
公开(公告)日：2010-04-15
申请号：US12251668
申请日：2008-10-15
IPC分类号： F26B21/00
CPC分类号： H01Q1/002
摘要： A blower system to remove precipitation from an antenna may include a blower air plenum extending substantially completely along one side of the antenna. A vent is in communication with the blower air plenum and extends substantially completely along the one side of the antenna to direct an airstream across a surface of the antenna to remove precipitation from the antenna. The vent may include a contour to conform to a contour of the one side of the antenna. The blower system may also include an air compressor to force air into the blower air plenum and out the vent to form the airstream flowing across the surface of the antenna.
摘要翻译： 用于从天线去除沉淀物的鼓风机系统可以包括基本上完全沿着天线的一侧延伸的鼓风机空气室。 排气口与鼓风机空气通风室连通，并且沿着天线的一侧基本上完全延伸，以引导空气流穿过天线的表面，以消除天线的沉淀。 通风口可以包括符合天线一侧轮廓的轮廓。 鼓风机系统还可以包括空气压缩机，以迫使空气进入鼓风机空气通风室并排出通风口以形成流过天线表面的气流。
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公开(公告)号：US20070217355A1
公开(公告)日：2007-09-20
申请号：US11378563
申请日：2006-03-17
IPC分类号： H04Q7/00
CPC分类号： H04L1/0002 , H04B7/18513
摘要： A system and method for communicating information from a base station to one or more user terminals via a forward link to a relay and distribution device is provided. The method includes determining a separate information rate for information to be transmitted from the base station to each of the user terminals. Each information rate is determined to allow successful communication with the respective user terminal and to provide a predetermined amount of link margin above a threshold energy-to-noise ratio (Eb/No) in the forward link. The method additionally includes formatting data received at the base station into a continuous time division multiplexed (TDM) data stream that includes a plurality of data frames to be transmitted to the user terminals. Each data frame is formatted to have the determined information rate of the respective user terminal destine to receive the data frame. The TDM data stream is transmitted using a single carrier of the forward link. Furthermore, the method includes continuously and dynamically adjusting the information rate of subsequent data frames for each user terminal to maintain successful communication and maintain the predetermined amount of margin as operating conditions of each user terminal change.
摘要翻译： 提供了一种用于将信息从基站通过前向链路传送到一个或多个用户终端到中继和分配设备的系统和方法。 该方法包括为从基站发送到每个用户终端的信息确定单独的信息速率。 确定每个信息速率以允许与相应用户终端的成功通信，并且提供高于前向链路中的阈值能量 - 噪声比（Eb / No）的预定量的链路余量。 该方法还包括将在基站处接收的数据格式化成包括要发送给用户终端的多个数据帧的连续时分复用（TDM）数据流。 将每个数据帧格式化为具有相应用户终端确定的信息速率，以达到接收数据帧的目的。 使用前向链路的单载波来发送TDM数据流。 此外，该方法包括连续且动态地调整每个用户终端的后续数据帧的信息速率，以保持成功的通信，并且在每个用户终端的操作条件改变时保持预定量的余量。
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10.发明申请公开(公告)号：US20070026795A1
公开(公告)日：2007-02-01
申请号：US11536111
申请日：2006-09-28
IPC分类号： H04B7/185
CPC分类号： H04B7/18506 , H04B7/18508 , H04B7/18513 , H04W52/08 , H04W52/283
摘要： A system and method for managing access to a satellite-based transponder by a plurality of aircraft each having a mobile radio frequency (RF) system. The system employs a ground-based, central control system for managing access to the satellite-based transponder so that the aggregate power spectral density (PSD) of the RF signals of all the mobile systems does not exceed, at any time, limits established by regulatory agencies to prevent interference between satellite systems. This is accomplished by a dual control loop arrangement for monitoring the signal-to-noise ratio (Eb/No) of the RF signal transmitted by the satellite-based transponder. A ground-based control loop is used whereby a ground-based central controller monitors the Eb/No and transmits commands to the aircraft (via the satellite transponder) to maintain the Eb/No of the transmitted signal within a predetermined range. A fast scan angle compensation is used by the mobile system of the aircraft to implement another control loop to further adjust the transmit power. This control loop maintains the Eb/No of the signal transmitted to the satellite-based transponder at the commanded level inbetween updates from the ground-based central controller.
摘要翻译： 一种用于管理由具有移动射频（RF）系统的多个飞行器对基于卫星的应答器的访问的系统和方法。 该系统采用基于地面的中央控制系统来管理对基于卫星的应答器的访问，使得所有移动系统的RF信号的总功率谱密度（PSD）在任何时间都不超过由 监管机构防止卫星系统之间的干扰。 这通过用于监测由卫星转发器发送的RF信号的信噪比（Eb / No）的双重控制环路布置来实现。 使用基于地面的控制回路，由此基于地面的中央控制器监视Eb /否并且向飞行器（经由卫星转发器）发送命令以将发送的信号的Eb / No维持在预定范围内。 飞行器的移动系统使用快速扫描角补偿来实现另一个控制回路，以进一步调整发射功率。 该控制回路将来自基于地面的中央控制器的更新之间的指令级别的信号的Eb / No维持在基于卫星的应答器上。
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