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    • 5. 发明申请
    • GENERALIZED HIGH PERFORMANCE NAVIGATION SYSTEM
    • WO2008105778A3
    • 2008-09-04
    • PCT/US2007/011963
    • 2007-05-17
    • THE BOEING COMPANYCOHEN, Clark, E.WHELAN, David, A.BRUMLEY, Robert, W.FERRELL, Barton, G.GUTT, Gregory, M.
    • COHEN, Clark, E.WHELAN, David, A.BRUMLEY, Robert, W.FERRELL, Barton, G.GUTT, Gregory, M.
    • G01S5/02
    • A generalized high performance navigation system is provided using low earth orbit (LEO) satellites. In one embodiment, a method of performing navigation includes receiving a LEO signal from a LEO satellite, decoding a navigation signal from the LEO signal, receiving first and second ranging signals from first and second ranging sources, respectively, determining calibration information associated with the first and second ranging sources, and calculating a position using the navigation signal, the first and second ranging signals, and the calibration information. In another embodiment, a method of providing a LEO signal from a LEO satellite includes providing a plurality of transmit channels over a plurality of transmit slots, where the transmit channels comprise a set of communication channels and a set of navigation channels, generating a first pseudo random noise (PRN) ranging overlay corresponding to a navigation signal, applying the first PRN ranging overlay to a first set of the navigation channels, and combining the communication channels and the navigation channels into a LEO signal. The method also includes broadcasting the LEO signal from the LEO satellite. A low earth orbit (LEO) satellite data uplink is also provided. A method includes broadcasting the data uplink signal to the LEO satellite. Various approaches to localized jamming of navigation signals are further provided. Modulated noise signals are broadcast over an area of operations to provide a plurality of jamming bursts corresponding to the navigation signal. The jamming bursts are configured to substantially mask the navigation signal in the area of operations.
    • 6. 发明申请
    • VIBRATORY GYROSCOPE WITH PARASITIC MODE DAMPING
    • 具有PARASITIC模式阻尼的振动陀螺仪
    • WO2008079930A1
    • 2008-07-03
    • PCT/US2007/088286
    • 2007-12-20
    • THE BOEING COMPANYWHELAN, DavidCHALLONER, Dorian, A.
    • WHELAN, DavidCHALLONER, Dorian, A.
    • G01C19/56G01P9/04
    • G01C19/5684
    • Operation of a planar resonator gyroscope with in-plane parasitic modes of vibration to obtain improved performance is disclosed. A planar resonator gyroscope, such as a disc resonator gyroscope, may be operated with embedded electrodes. The embedded electrodes may be disposed adjacent to the planar resonator and proximate to one or more anti-nodes of a parasitic vibration mode. A sensed amplitude of the parasitic mode is applied in differential signals used to operate the gyroscope. A feedback controller for damping the parasitic mode applies a drive voltage generated from the proportional voltage to one or more drive electrodes adjacent to the planar resonator disposed proximate to one or more anti-nodes of the parasitic vibration mode of the planar resonator. Parasitic in-plane modes may be thus damped in operating the gyroscope with active damping applied through an analog operational amplifier or digital feedback.
    • 公开了具有面内寄生振动模式的平面谐振器陀螺仪的操作以获得改进的性能。 可以使用嵌入式电极来操作诸如盘式谐振器陀螺仪的平面谐振器陀螺仪。 嵌入式电极可以布置成与平面谐振器相邻并且靠近寄生振动模式的一个或多个反节点。 在用于操作陀螺仪的差分信号中应用感测到的寄生模式的幅度。 用于阻尼寄生模式的反馈控制器将从比例电压产生的驱动电压施加到靠近平面谐振器的寄生振动模式的一个或多个反节点设置的平面谐振器附近的一个或多个驱动电极。 在通过模拟运算放大器或数字反馈施加的主动阻尼的陀螺仪的操作中,寄生面内模式可能被阻尼。
    • 9. 发明申请
    • DISK LASER
    • 磁盘激光
    • WO2011100082A1
    • 2011-08-18
    • PCT/US2011/020865
    • 2011-01-11
    • THE BOEING COMPANYGALASSO, D. AnthonyWHELAN, David A.ULLMAN, Alan Z.HARRIS, Dennis G.
    • GALASSO, D. AnthonyWHELAN, David A.ULLMAN, Alan Z.HARRIS, Dennis G.
    • H01S3/06H01S3/042H01S3/16F41H13/00
    • H01S3/0404F42B10/60H01S3/0407H01S3/042H01S3/0604H01S3/07H01S3/1685H01S3/2316H01S3/2333H01S2301/02
    • The different advantageous embodiments provide an apparatus and method comprising a substrate (900, 1300) configured to increase an intensity of light at a desired wavelength. The substrate (900, 1300) has a front side (1302), a back side (1304), and an outer edge (922, 1306). The substrate (900, 1300) is configured to reflect the light received on the front side (1302) of the substrate. The substrate comprises ceramic. The substrate (900, 1300) comprises a plurality of sections (902-918). The method and apparatus also comprise a material (920) configured to attenuate the light passing between the plurality of sections (902 -918). The material (920) surrounds an edge of each section of the plurality of sections. The apparatus and method also comprise a cooling system (808) configured to allow liquid nitrogen to be transmitted through the cooling system (808) and receive heat generated in the substrate (900, 1300) from the back side (1304) of the substrate (900, 1300).
    • 不同的有利实施例提供了一种装置和方法,包括被配置为增加所需波长的光的强度的基板(900,1300)。 基板(900,1300)具有前侧(1302),后侧(1304)和外边缘(922,1306)。 衬底(900,1300)被配置为反射接收在衬底的前侧(1302)上的光。 衬底包括陶瓷。 基板(900,1300)包括多个部分(902-918)。 该方法和装置还包括被配置为衰减在多个部分之间通过的光(902-918)的材料(920)。 材料(920)围绕多个部分的每个部分的边缘。 该设备和方法还包括冷却系统(808),其被配置为允许液氮通过冷却系统(808)传输并且从衬底的背面(1304)接收在衬底(900,1300)中产生的热 900,1300)。