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公开(公告)号：US07630683B2
公开(公告)日：2009-12-08
申请号：US11536111
申请日：2006-09-28
IPC分类号： H04B7/19
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：US07454202B2
公开(公告)日：2008-11-18
申请号：US10915170
申请日：2004-08-10
IPC分类号： H04Q7/20
CPC分类号： H04B7/18508
摘要： A method is provided for providing communication and surveillance services to a mobile platform. The method includes substantially simultaneously communicating between a plurality ground based antennas and a plurality of satellites. Particularly, each ground based antenna communicates with a related one of the satellites. The method additionally includes substantially simultaneously communicating between each of the satellites and at least one multi-faceted electronically scanned antenna included in a mobile platform communication system onboard a mobile platform.
摘要翻译： 提供了一种用于向移动平台提供通信和监视服务的方法。 该方法包括基本上同时在多个基于地面的天线和多个卫星之间进行通信。 特别地，每个地面天线与相关的一颗卫星通信。 该方法还包括在每个卫星和包括在移动平台上的移动平台通信系统中的至少一个多面电子扫描天线之间基本上同时进行通信。
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公开(公告)号：US07136621B2
公开(公告)日：2006-11-14
申请号：US11241119
申请日：2005-09-30
IPC分类号： H04B7/19
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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34.发明授权Communications system and method employing forward satellite links using multiple simultaneous data rates 有权使用多个同步数据速率的前向卫星链路的通信系统和方法公开(公告)号：US07120389B2
公开(公告)日：2006-10-10
申请号：US10993500
申请日：2004-11-19
CPC分类号： H04B7/18508
摘要： A communication system and method for transmitting data to mobile platforms using multiple simultaneous channels operating at multiple data rates. Each mobile receiver has the capability to receive multiple transmit channels at multiple data rates. Mobile platforms report their position to a ground based controller which determines which communication channel can be operated without substantial loss of data. Data packets destined for each aircraft are preferably routed to the highest data rate channel that can be received by that mobile platform without substantial loss of data. This maximizes the overall system efficiency and throughput. High priority and mission critical data may be transmitted to the aircraft using low data rate channels to increase link availability.
摘要翻译： 一种用于使用以多个数据速率操作的多个同时信道向移动平台发送数据的通信系统和方法。 每个移动接收机具有以多个数据速率接收多个发射信道的能力。 移动平台将其位置报告给基于地面的控制器，该控制器确定可以在没有数据丢失的情况下操作哪个通信信道。 去往每个飞机的数据分组优选地被路由到可被该移动平台接收的最高数据速率信道，而不会显着损失数据。 这最大限度地提高了整个系统的效率和吞吐量。 高优先级和任务关键数据可以使用低数据速率信道发送到飞行器以增加链路可用性。
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公开(公告)号：US07027767B2
公开(公告)日：2006-04-11
申请号：US10023111
申请日：2001-12-17
CPC分类号： B64D11/00151 , B64D11/0015 , B64D11/0624 , H04B10/1149 , H04B10/40 , H04W84/005 , H04W84/12
摘要： A system for providing wireless communication within a local area network (LAN) onboard a mobile platform. The system includes at least one seat transceiver located in a passenger seating area, and at least one passenger service unit (PSU) located above the passenger seating area. The PSU includes at least one PSU transceiver. Additionally, the system includes a direct path infrared (IR) signal transmission link between the seat transceiver and the PSU transceiver. The direct path IR transmission link transmits data between the seat transceiver and the PSU transceiver.
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36.发明授权Communications system and method employing forward satellite links using multiple simultaneous data rates 有权使用多个同步数据速率的前向卫星链路的通信系统和方法公开(公告)号：US06847801B2
公开(公告)日：2005-01-25
申请号：US09943679
申请日：2001-08-30
CPC分类号： H04B7/18508
摘要： A communication system and method for transmitting data to mobile platforms using multiple simultaneous channels operating at multiple data rates. Each mobile receiver has the capability to receive multiple transmit channels at multiple data rates. Aircraft report their position to a ground based controller which determines which communication channel can be operated without substantial loss of data. Data packets destined for each aircraft are preferably routed to the highest data rate channel that can be received by that aircraft without substantial loss of data. This maximizes the overall system efficiency and throughput. High priority and mission critical data may be transmitted to the aircraft using low data rate channels to increase link availability.
摘要翻译： 一种用于使用以多个数据速率操作的多个同时信道向移动平台发送数据的通信系统和方法。 每个移动接收机具有以多个数据速率接收多个发射信道的能力。 飞机将其位置报告给基于地面的控制器，该控制器确定哪个通信通道可以在没有显着数据丢失的情况下运行。 去往每个飞行器的数据分组优选地被路由到可以由该飞机接收的最高数据速率信道，而不会显着损失数据。 这最大限度地提高了整个系统的效率和吞吐量。 高优先级和任务关键数据可以使用低数据速率信道发送到飞行器以增加链路可用性。
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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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38.发明授权Electronically tuneable fiber-optic receiver for narrow band microwave signal reception 失效用于窄带微波信号接收的电子可调光纤接收器
公开(公告)号：US5029240A
公开(公告)日：1991-07-02
申请号：US371567
申请日：1989-06-26
IPC分类号： H01L31/10 , H01L31/108 , H03J3/18 , H04B10/04 , H04B10/06 , H04B10/14 , H04B10/158 , H04B10/26 , H04B10/28 , H04J14/02 , H04J99/00
CPC分类号： H01L31/108 , H04B10/6932 , H04B10/6973 , H04J14/02
摘要： The optical receiver has a photodiode (10) which is reverse biased by a voltage supply (14). The voltage supply provides a variable bias voltage determined by a control unit (16) and the photodiode is matched to the load (22) by an impedance matching circuit (12). The photodiode exhibits large capacitance changes over a range of bias voltages and may be implemented using a Schottky barrier or P.sup.+ N photodiode. By changing the bias voltage, the photodiode capacitance changes to vary the tuned frequency of the receiver. The matching circuit cancels the reactive component of the photodiode impedance and matches the resistive component to the load. The photodiode may have a doping profile in which an intrinsic or lightly doped region of width greater than the average photon penetration depth is located next to the junction. After the intrinsic region, the doping profile may be selected to achieve linear tuning. This doping profile gives linear tuning without sacrificing photodiode conversion efficiency.
摘要翻译： 光接收器具有由电压源（14）反向偏置的光电二极管（10）。 电压源提供由控制单元（16）确定的可变偏置电压，并且光电二极管通过阻抗匹配电路（12）与负载（22）匹配。 光电二极管在偏置电压范围内显示出大的电容变化，并且可以使用肖特基势垒或P + N光电二极管来实现。 通过改变偏置电压，光电二极管电容变化以改变接收机的调谐频率。 匹配电路消除光电二极管阻抗的无功分量，并将电阻分量与负载相匹配。 光电二极管可以具有掺杂分布，其中宽度大于平均光子穿透深度的本征或轻掺杂区域位于接合点旁边。 在本征区域之后，可以选择掺杂分布以实现线性调谐。 该掺杂曲线提供线性调谐，而不牺牲光电二极管的转换效率。
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公开(公告)号：US5019826A
公开(公告)日：1991-05-28
申请号：US250675
申请日：1988-09-29
CPC分类号： G01S7/288
摘要： A portion of a radar transmit pulse is inserted into a recirculating delay line having a one cycle delay equal to the duration of a transmit pulse. A pulse train coupled from the recirculating delay serves as a local oscillator for the radar receiver. The delay medium may be an optical fiber, a coaxial transmission line or a surface acoustic wave (SAW) device.
摘要翻译： 将雷达发射脉冲的一部分插入具有等于发射脉冲的持续时间的一个周期延迟的再循环延迟线。 从循环延迟耦合的脉冲串用作雷达接收机的本地振荡器。 延迟介质可以是光纤，同轴传输线或表面声波（SAW）器件。
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