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    • 4. 发明申请
    • APPARATUS AND METHOD FOR IMPROVED CRYSTAL TIME REFERENCE
    • 改进的晶体时间参考的装置和方法
    • WO2003054638A1
    • 2003-07-03
    • PCT/US2002/039181
    • 2002-12-09
    • THE BOEING COMPANY
    • TILLOTSON, Brian, J.ROTTA, Phillip, R.
    • G04F5/06
    • G04F5/06H03L1/00
    • A timing reference system is provided for correcting inaccuracies in an output of a crystal oscillator experienced by the crystal oscillator during use in a mobile platform. The system utilizes a three-axis accelerometer mounted adjacent to the crystal oscillator on a substrate for sensing the acceleration experienced by the crystal oscillator. An offset generator converts the acceleration measurements generated by the accelerometer to error correction signals. These error correction signals represent the offset values needed to compensate for crystal timing drift due to the acceleration acting on the crystal oscillator thereby allowing the system to produce a corrected timing reference signal.
    • 提供了一种定时参考系统,用于校正在移动平台中使用期间由晶体振荡器经历的晶体振荡器的输出中的不准确性。 该系统利用安装在基板上的晶体振荡器附近的三轴加速度传感器来感测晶体振荡器所经受的加速度。 偏移发生器将由加速度计产生的加速度测量值转换为纠错信号。 这些纠错信号表示由于作用在晶体振荡器上的加速度而补偿晶体定时漂移所需的偏移值,从而允许系统产生校正的定时参考信号。
    • 7. 发明申请
    • LINK TRACKING IN A TDMA NETWORK WITH A PHASED ARRAY ANTENNA
    • 在具有相位阵列天线的TDMA网络中的链路跟踪
    • WO2003040750A1
    • 2003-05-15
    • PCT/US2002/033976
    • 2002-10-23
    • THE BOEING COMPANY
    • TILLOTSON, Brian, J.
    • G01S3/20
    • H01Q3/2605G01S3/20G01S5/0081
    • An apparatus and method for performing closed-loop beam pointing of a narrow beam at each one of a plurality of target nodes (B-D,38,40,42) of a communication network, in accordance with a TDMA multiplexing scheme. The invention employs a process (10) similar to coning to obtain a plurality of scan points (1-15) for each target node (B-D,38,40,42). A signal strength of a signal received from each node is recorded (24) and used by the invention to determine an optimal pointing direction (30) relative to each node. This optimal pointing direction is updated repeatedly (32) as each of the target nodes (B-D,38,40,42) is scanned. The invention provides the accuracy of closed loop beam pointing to be employed with TDMA communication links, which in turn allows using larger PAA's with narrow beams, and thereby permitting higher data transfer rates to be realized over each communication link.
    • 根据TDMA复用方案,用于在通信网络的多个目标节点(B-D,38,40,42)中的每一个处执行窄波束的闭环波束指向的装置和方法。 本发明采用类似于锥形的过程(10)来获得每个目标节点(B-D,38,40,42)的多个扫描点(1-15)。 记录从每个节点接收的信号的信号强度(24)并由本发明使用以确定相对于每个节点的最佳指向方向(30)。 当对每个目标节点(B-D,38,40,42)进行扫描时,该最佳指向方向被重复地更新(32)。 本发明提供了与TDMA通信链路一起使用的闭环波束指向的准确性,其又允许使用具有窄波束的较大PAA,从而允许在每个通信链路上实现更高的数据传输速率。
    • 8. 发明申请
    • PRIORITIZED CHANNEL ASSIGNMENT FOR WIRELESS LINKS
    • 无线链路优先通道分配
    • WO2008051470A2
    • 2008-05-02
    • PCT/US2007/022333
    • 2007-10-19
    • THE BOEING COMPANYTILLOTSON, Brian, J.
    • TILLOTSON, Brian, J.
    • H04L12/56
    • H04W72/10H04W72/0413
    • Link capacity in a wireless medium is assigned by receiving at least one capacity request; and controlling the wireless link capacity based on at least the received capacity request. Link capacity is altered by reading priority information; creating a capacity request from the priority information read; transmitting the capacity request; receiving link configuration data; and configuring a wireless link to conform to the received allocation of link capacity. Link capacity is controlled by extracting the origin and priority of one or more packets received over the shared wireless medium; selecting the link capacity for one or more wireless links based at least in part on the extracted origin and priority of the one or more packets received, higher capacities are selected for origins from which higher priority packets are received; and transmitting the selected link capacity to the one or more wireless links.
    • 通过接收至少一个容量请求来分配无线介质中的链路容量; 以及至少基于所接收的容量请求来控制无线链路容量。 通过阅读优先级信息来改变链路容量; 从读取的优先级信息创建容量请求; 传输容量请求; 接收链路配置数据; 以及配置无线链路以符合所接收的链路容量分配。 通过提取通过共享无线介质接收的一个或多个分组的来源和优先级来控制链路容量; 至少部分地基于所提取的一个或多个分组的原始和优先级来选择一个或多个无线链路的链路容量,对于从其接收较高优先级的分组的起始,选择较高的容量; 以及将所选择的链路容量发送到所述一个或多个无线链路。
    • 9. 发明申请
    • ACOUSTIC PROFILER FOR WIND, TEMPERATURE, AND TURBULENCE
    • 用于风,温度和湍流的声学型号
    • WO2008051288A2
    • 2008-05-02
    • PCT/US2007/008737
    • 2007-04-06
    • THE BOEING COMPANYTILLOTSON, Brian, J.JACKSON, Bronwyn, A.
    • TILLOTSON, Brian, J.JACKSON, Bronwyn, A.
    • G01S15/88
    • G01N29/024G01N29/0672G01N29/262G01N29/46G01N2291/017G01N2291/02881G01S3/80G01W1/04
    • Characterizing atmospheric conditions is accomplished by measuring at least one varying spectral characteristic of sound at a plurality of intervals from a sound source with the point of measurement and the sound source in relative motion and separated by altitude. The spectral characteristic of the sound at each interval is attributed to a path traveled by the sound and a plurality of simultaneous equations is created for the plurality of paths using a second plurality of altitude segments for each path, each segment having a particular vector as a variable on the spectral characteristic, the initial coefficients in each vector assumed based on predetermined atmospheric models for each altitude segment. The resulting calculated vector and the predetermined atmospheric model are iterated for a minimized cost function in a variational analysis to determine the vector for each altitude segment, the vector providing atmospheric properties for the associated altitude segment.
    • 通过从具有测量点的声源和相对运动中的声源以高度隔开的多个间隔测量声音的至少一个变化的光谱特性来实现大气条件的表征。 每个间隔处的声音的频谱特性归因于由声音行进的路径,并且使用针对每个路径的第二多个高度段为多个路径创建多个联立方程,每个段具有特定向量作为 基于每个高度段的预定大气模型假设每个向量中的初始系数。 在变分分析中迭代所得到的计算矢量和预定大气模型以获得最小化成本函数,以确定每个高度段的向量,向量为相关联的高度段提供大气特性。
    • 10. 发明申请
    • SYSTEM FOR MEASURING TURBULENCE REMOTELY
    • 用于远程测量湍流的系统
    • WO2006083361A2
    • 2006-08-10
    • PCT/US2005/042449
    • 2005-11-22
    • THE BOEING COMPANYTILLOTSON, Brian, J.SPINELLI, Charles, B.
    • TILLOTSON, Brian, J.SPINELLI, Charles, B.
    • G01S13/95
    • G01S13/955G01P5/001G01P5/26G01W1/16G01W2001/003Y02A90/18
    • A system and method for detecting turbulence includes several mobile platforms, a mobile platform velocity sensor, and several electromagnetic energy transmitters and receivers. The receivers receive the energy transmitted by the transmitter(s) after it has traveled along a path subject to the turbulence. The receivers detect alterations of the energy caused by the turbulence and filter the alterations for effects of the mobile platform velocity (on which either a transmitter or receiver is located). Additionally, the system may create a three-dimensional model of the. In another preferred embodiment, the present invention provides a method of detecting turbulence using a mobile platform. The method includes receiving electromagnetic energy that has traveled along a path subject to the turbulence and determining the alteration to the energy caused by the turbulence. The alterations are filtered of the effects of the velocity of the mobile platform on which the receivers are preferably located.
    • 用于检测湍流的系统和方法包括几个移动平台,移动平台速度传感器和若干电磁能发射器和接收器。 接收器在经过湍流的路径行进之后接收发射器发送的能量。 接收机检测由湍流引起的能量的变化,并且过滤移动平台速度(发射机或接收机所在的速度)的影响的改变。 另外,系统可以创建三维模型。 在另一优选实施例中,本发明提供使用移动平台检测湍流的方法。 该方法包括接收沿着湍流路径行进的电磁能,并确定由湍流引起的能量的变化。 对接收器优选位于其上的移动平台的速度的影响进行过滤。