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公开(公告)号：US07054593B2
公开(公告)日：2006-05-30
申请号：US09884555
申请日：2001-06-19
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.
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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：US07997005B2
公开(公告)日：2011-08-16
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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14.发明申请METHOD AND APPARATUS FOR BI-DIRECTIONAL DATA SERVICES AND LIVE TELEVISION PROGRAMMING TO MOBILE PLATFORMS 审中-公开用于双向数据服务的方法和装置以及移动平台的实时电视编程公开(公告)号：US20090080368A1
公开(公告)日：2009-03-26
申请号：US12272299
申请日：2008-11-17
申请人： Greg A. Bengeult , Jeffrey P. Harrang , William R. Richards , Michael G. Lynch , Michael de La Chapelle , Paulus J. Martens , Ronald S. Carson , Richard D. Williams, II , Daniel F. Miller , Geoffrey O. White , George Fitzsimmons , Russell Berkheimer , Robert P. Higgins , Arthur F. Morrison
发明人： Greg A. Bengeult , Jeffrey P. Harrang , William R. Richards , Michael G. Lynch , Michael de La Chapelle , Paulus J. Martens , Ronald S. Carson , Richard D. Williams, II , Daniel F. Miller , Geoffrey O. White , George Fitzsimmons , Russell Berkheimer , Robert P. Higgins , Arthur F. Morrison
IPC分类号： H04B7/185
CPC分类号： H04N7/173 , H04B7/18508 , H04N7/147 , H04N7/20 , H04N21/2146 , H04N21/2187 , H04N21/2543 , H04N21/4126 , H04N21/6143
摘要： A system for bi-directional data content transfer between a plurality of mobile platforms, such as aircraft or cruise ships, and a ground-based control segment. The system includes the ground-based control segment, a space segment and a mobile system disposed on each mobile platform. The ground-based control segment includes an antenna which is used to transmit encoded RF signals representative of data content to the space segment. The space segment includes a plurality of satellite transponders, with one of the transponders being designated by the ground-based control segment to transpond the encoded RF signals to the mobile system. The mobile system includes steerable receive and transmit antennas. The receive antenna receives the encoded RF signals from the satellite transponder, which are thereafter decoded, demodulated, D/A converted by a communications subsystem and transmitted to a server. The server filters off that data content not requested by any occupants on the mobile system. A local area network (LAN) receives the remaining data content and provides same to individual users on the mobile platform in accordance with previously submitted programming requests or data input by the users at access stations associated independently with each user. The transmit antenna is used to transmit data content from laptop computers, PDAs or other user electronic devices coupled to the access stations back to the designated satellite transponder. The satellite transponder then transponds the data back to the antenna of the ground-based control segment.
摘要翻译： 用于在诸如飞机或游轮之类的多个移动平台和基于地面的控制段之间进行双向数据内容传送的系统。 该系统包括设置在每个移动平台上的基于地面的控制段，空间段和移动系统。 基于地面的控制段包括用于将表示数据内容的编码RF信号发送到空间段的天线。 空间段包括多个卫星转发器，其中一个应答器由基于地面的控制段指定，以将编码的RF信号转发到移动系统。 移动系统包括可引导的接收和发射天线。 接收天线接收来自卫星转发器的经编码的RF信号，其随后由通信子系统进行解码，解调，D / A转换并发送到服务器。 服务器过滤掉移动系统上任何乘客未请求的数据内容。 局域网（LAN）接收剩余的数据内容，并根据先前提交的编程请求或与每个用户独立关联的接入站处的用户输入的数据向移动平台上的个别用户提供相同的数据。 发射天线用于将耦合到接入站的膝上型计算机，PDA或其他用户电子设备的数据内容传送回指定的卫星转发器。 然后，卫星转发器将数据转发回地面控制段的天线。
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公开(公告)号：US20060270354A1
公开(公告)日：2006-11-30
申请号：US11440301
申请日：2006-05-24
CPC分类号： H04B7/18506 , H01Q1/28
摘要： A system and method for selectively enabling and disabling wireless connectivity between cellular or PDA users on-board commercial aircraft having a shielded fuselage, and remotely located wireless access points, while the aircraft is at an airport or airfield. The system and method does not require access to an on-board LAN system of the aircraft. The system includes one or more antennae disposed in the cabin area of the aircraft that are coupled via an RF switch with an exterior antenna mounted on an exterior of the fuselage. The RF switch is controlled by a switch control subsystem, and enables or disables communication between the interior antennae and the exterior antenna. The exterior antenna is connected to the switch via a conductor that extends through the shielding of the aircraft. When the RF switch is in the closed position, cellular or PDA users can connect through the interior antennae and the exterior antenna directly to remotely located wireless access points.
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公开(公告)号：US20060229070A1
公开(公告)日：2006-10-12
申请号：US11184712
申请日：2005-07-19
IPC分类号： H04Q7/20
CPC分类号： H01Q25/00 , H01Q1/28 , H01Q1/3225 , H01Q3/26 , H04B7/18506 , H04W36/08 , H04W36/18 , H04W84/06
摘要： A system and method for implementing soft handoffs in a cellular communications system on a mobile platform. The system employs an antenna controller in communication with a beam forming network that generates two independently aimable lobes from a single beam. The single beam is radiated by a phased array antenna on the mobile platform. In an Air-to-Ground implementation involving an aircraft, a base transceiver station (BTS) look-up position table is utilized to provide the locations of a plurality of BTS sites within a given region that the aircraft is traversing. The antenna controller controls the beam forming network to generate dual lobes from the single beam that facilitate making a soft handoff from one BTS site to another. In a ground-based application, one lobe of the beam is used to maintain a communications link with one BTS site while a second lobe of the beam is continuously scanned about a predetermined arc to receive RF signals from other BTS sites and to determine when a new BTS site has become available that will provide a higher quality link than the link presently made with the one BTS site. A soft handoff is then implemented from the one BTS site to the new BTS site.
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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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公开(公告)号：US5029306A
公开(公告)日：1991-07-02
申请号：US392048
申请日：1989-08-10
CPC分类号： H01Q3/2676 , H01Q1/247
摘要： A phased-array antenna (14) is disclosed including modules (12) that respond to optic signals provided by a central processor (16) vai an optic feed network (18). In a transmit mode of operation, the central processor provides optic transmit signals to the modules, controlling the phase and attenuation of the various signals to accomplish the desired steering of the antenna beam produced by the array. A mixer or avalanche photodiode (42) in each module provides suitable optical-to-RF power conversion for the input signal to allow antenna elements (44) in the module to radiate the desired electromagnetic beam. During a receive interval, a received electric signal produced by the antenna elements is combined by the mixer with a local oscillator frequency optic signal applied to the mixer by the central processor. As a result, the RF frequency of the received signal is reduced to an IF frequency for low-cost amplification by an amplifier (52). A ligh source (48) then transmits the received signal back to the central processor for interpretation. The resultant arrangement advantageously reduces the complexity and expense of the various modules in the array.
摘要翻译： 公开了一种相控阵天线（14），其包括响应由通过光纤馈电网络（18）的中央处理器（16）提供的光信号的模块（12）。 在发射操作模式中，中央处理器向模块提供光学发射信号，控制各种信号的相位和衰减，以实现由阵列产生的天线波束的理想导向。 每个模块中的混合器或雪崩光电二极管（42）为输入信号提供合适的光 - 射频功率转换，以允许模块中的天线元件（44）辐射所需的电磁波束。 在接收间隔期间，由天线元件产生的接收到的电信号由混频器与由中央处理器施加到混频器的本地振荡器频率光信号组合。 结果，由放大器（52）将接收信号的RF频率降低到用于低成本放大的IF频率。 然后，灯源（48）将所接收的信号发送回中央处理器进行解释。 所得到的装置有利地降低了阵列中各种模块的复杂性和费用。
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19.发明授权公开(公告)号：US08359026B2
公开(公告)日：2013-01-22
申请号：US11440301
申请日：2006-05-24
IPC分类号： H04W4/00
CPC分类号： H04B7/18506 , H01Q1/28
摘要： A system and method for selectively enabling and disabling wireless connectivity between cellular or PDA users on-board commercial aircraft having a shielded fuselage, and remotely located wireless access points, while the aircraft is at an airport or airfield. The system and method does not require access to an on-board LAN system of the aircraft. The system includes one or more antennae disposed in the cabin area of the aircraft that are coupled via an RF switch with an exterior antenna mounted on an exterior of the fuselage. The RF switch is controlled by a switch control subsystem, and enables or disables communication between the interior antennae and the exterior antenna. The exterior antenna is connected to the switch via a conductor that extends through the shielding of the aircraft. When the RF switch is in the closed position, cellular or PDA users can connect through the interior antennae and the exterior antenna directly to remotely located wireless access points.
摘要翻译： 一种用于在飞机在机场或机场的同时，在具有屏蔽机身的蜂窝或PDA用户车载商用飞机和位于远程位置的无线接入点之间选择性地启用和禁用无线连接的系统和方法。 该系统和方法不需要访问飞机的车载LAN系统。 该系统包括一个或多个天线，其设置在飞行器的机舱区域中，该天线通过RF开关与安装在机身外部的外部天线耦合。 RF开关由开关控制子系统控制，并启用或禁用内部天线与外部天线之间的通信。 外部天线通过延伸穿过飞机屏蔽的导体连接到开关。 当RF开关处于关闭位置时，蜂窝或PDA用户可以通过内部天线和外部天线直接连接到远程位置的无线接入点。
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公开(公告)号：US08054224B1
公开(公告)日：2011-11-08
申请号：US12913093
申请日：2010-10-27
IPC分类号： H01Q3/00
摘要： A method and apparatus for creating an antenna system. A configuration for a plurality of antenna cells is selected for an antenna in the antenna system. Each antenna cell in the plurality of antenna cells comprises a plurality of antenna elements having a symmetric arrangement. A portion of antenna elements in the plurality of antenna elements for each antenna cell in the plurality of antenna cells on a substrate is selected to transmit electromagnetic waves.
摘要翻译： 一种用于创建天线系统的方法和装置。 在天线系统中为天线选择多个天线小区的配置。 多个天线单元中的每个天线单元包括具有对称布置的多个天线元件。 选择在基板上的多个天线单元中的每个天线单元的多个天线元件中的天线元件的一部分，以发射电磁波。
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