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    • 2. 发明授权
    • Method and apparatus using variations in power modulation to determine an interfering mobile terminal
    • 使用功率调制变化来确定干扰移动终端的方法和装置
    • US07155168B2
    • 2006-12-26
    • US10022981
    • 2001-12-17
    • Christopher John McLainMichael de La Chapelle
    • Christopher John McLainMichael de La Chapelle
    • H04B17/00
    • H04B7/18508H04W52/08
    • 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.
    • 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。
    • 4. 发明授权
    • Beam alignment system and method for an antenna
    • 光束对准​​系统及天线方法
    • US06417803B1
    • 2002-07-09
    • US09825575
    • 2001-04-03
    • Michael de La ChapelleChristopher McLainDavid S. Parkman
    • Michael de La ChapelleChristopher McLainDavid S. Parkman
    • H01Q300
    • H01Q1/1257G01S3/20H01Q1/28
    • 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.
    • 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。
    • 5. 发明授权
    • Optical signal summing device
    • 光信号求和装置
    • US5001336A
    • 1991-03-19
    • US448751
    • 1989-12-11
    • Michael de la Chapelle
    • Michael de la Chapelle
    • H01Q3/26H04B10/155
    • H04B10/50H01Q3/2676
    • A device for receiving intensity modulated optical input signals, and producing an electronic output signal having a magnitude corresponding to the sum of the intensities of the input signals. The device comprises a plurality of photodetectors for receiving the input signals, the photodetectors being connected in parallel between first and second conductor lines. The photodetectors are reverse biased, preferably through a low pass filter, and a high pass filter is positioned between the conductor lines and a pair of output terminals at which the output signal is produced. The device may also include frequency compensation and/or impedance matching means connected between the high pass filter and the output terminals. Where the input signals are provided on fiber-optic cables or optical waveguides, means may also be provided for positioning the fiber-optic cables or waveguides such that the input signals are efficien=tly coupled onto the photodetectors.
    • 一种用于接收强度调制光输入信号的装置,并产生具有与输入信号的强度之和相对应的量值的电子输出信号。 该装置包括用于接收输入信号的多个光电检测器,光电检测器并联连接在第一和第二导线之间。 光电探测器被反向偏置,优选地通过低通滤波器,并且高通滤波器位于导体线与产生输出信号的一对输出端之间。 该装置还可以包括连接在高通滤波器和输出端之间的频率补偿和/或阻抗匹配装置。 在输入信号设置在光纤电缆或光波导上的情况下,还可以提供用于定位光纤电缆或波导的装置,使得输入信号有效地耦合到光电探测器上。
    • 9. 发明申请
    • System and method for adaptive information rate communication
    • 自适应信息速率通信系统和方法
    • US20070217355A1
    • 2007-09-20
    • US11378563
    • 2006-03-17
    • Michael de La ChapelleChristopher McLainJoseph NiesenDavid Parkman
    • Michael de La ChapelleChristopher McLainJoseph NiesenDavid Parkman
    • H04Q7/00
    • H04L1/0002H04B7/18513
    • 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.
    • 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。
    • 10. 发明申请
    • RETURN LINK DESIGN FOR PSD LIMITED MOBILE SATELLITE COMMUNICATION SYSTEMS
    • 返回链路设计PSD有限公司的移动卫星通信系统
    • US20070026795A1
    • 2007-02-01
    • US11536111
    • 2006-09-28
    • Michael de La Chapelle
    • Michael de La Chapelle
    • H04B7/185
    • H04B7/18506H04B7/18508H04B7/18513H04W52/08H04W52/283
    • 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.
    • 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。