Optical temperature sensor using photoelastic waveguides
    1.
    发明授权
    Optical temperature sensor using photoelastic waveguides 失效
    使用光弹性波导的光学温度传感器

    公开(公告)号:US4756627A

    公开(公告)日:1988-07-12

    申请号:US641643

    申请日:1984-08-17

    Inventor: Arthur R. Nelson

    CPC classification number: G01K5/52

    Abstract: An integrated-optic waveguide apparatus uses a photoelastic substrate for sensing temperature changes. Optical channels are formed in a photoelastic crystal substrate by depositing film stripes thereon to cause stress-induced changes in the relative refractive index responsive to changes in the substrate temperature. Absorption and coupling or switching of light waves between the channels provides a variable light intensity as a function of temperature. A single-mode temperature sensor of the interferometer type provides high sensitivity without requiring a secondary reference light source. Multimode temperature sensors are also described which exhibit a wide dynamic range useful up to several hundred degrees C. at a slight compromise in sensitivity.

    Abstract translation: 集成光波导装置使用光弹性基板来感测温度变化。 通过在其上沉积薄膜条以响应于基板温度的变化而引起应力引起的相对折射率变化,在光弹性晶体基板中形成光通道。 通道之间的光波的吸收和耦合或切换提供可变的光强度作为温度的函数。 干涉仪类型的单模式温度传感器提供高灵敏度,而不需要二次参考光源。 还描述了多模式温度传感器,其表现出宽达数百摄氏度的宽动态范围,在灵敏度方面有轻微的折中。

    Baseband detector with anti-jam capability
    5.
    发明授权
    Baseband detector with anti-jam capability 失效
    具有抗干扰能力的基带检测器

    公开(公告)号:US4688041A

    公开(公告)日:1987-08-18

    申请号:US336642

    申请日:1981-10-08

    CPC classification number: H04K3/224 G01S13/0209 G01S7/36

    Abstract: A method and apparatus for detecting a short pulse signal in the presence of an interfering jamming signal wherein the jamming signal is utilized as the local oscillator in a diode mixer when it is received at a sufficiently high level for efficiently mixing with a short pulse signal. When the received jamming level is insufficient to act as a local oscillator, an internal local oscillator signal is coupled to the diode to maintain an efficient mixing operation.

    Abstract translation: 一种用于在存在干扰干扰信号的情况下检测短脉冲信号的方法和装置,其中当二极管混频器以足够高的电平接收干扰信号作为本地振荡器,以便与短脉冲信号有效地混合时,该干扰信号被用作本地振荡器。 当接收到的干扰电平不足以用作本地振荡器时,内部本地振荡器信号耦合到二极管以保持有效的混频操作。

    Radar reflector and scanner with electromagnetic programmable drive
    7.
    发明授权
    Radar reflector and scanner with electromagnetic programmable drive 失效
    雷达反射器和带电磁可编程驱动器的扫描仪

    公开(公告)号:US4656484A

    公开(公告)日:1987-04-07

    申请号:US762415

    申请日:1985-08-05

    CPC classification number: H01Q3/20

    Abstract: Elements of a radar antenna are provided with one or more electromagnetic actuators capable of moving the elements (scanner or parabolic reflector), independently of the support system in response to electrical signals applied to the coils of the electromagnetic actuators.

    Abstract translation: 雷达天线的元件设置有一个或多个能够响应于施加到电磁致动器的线圈的电信号而独立于支撑系统移动元件(扫描仪或抛物面反射器)的电磁致动器。

    Method and apparatus for high speed graphics fill
    9.
    发明授权
    Method and apparatus for high speed graphics fill 失效
    高速图形填充的方法和装置

    公开(公告)号:US4646076A

    公开(公告)日:1987-02-24

    申请号:US488935

    申请日:1983-04-27

    CPC classification number: G09G5/393 G06T11/40

    Abstract: A method and apparatus for performing high speed graphics fill is provided. Any closed line geometric shape or polygon that can be defined by pixel position is stored in memory. The memory pixel positions are stored in address locations corresponding to row and column positions. A first sequential examination of the data is made in reverse raster scan order to make a preliminary determination of the pixel positions inside the closed polygon. A second sequential examination of the data is made in forward or regular raster scan order and a final determination is made whether the pixel positions are inside the polygon and shall be filled. The final determination of pixel positions to be filled is stored shortly before the graphics fill operation is performed so that the fill operation is performed in raster scan time at high speed.

    Abstract translation: 提供了用于执行高速图形填充的方法和装置。 可以由像素位置定义的任何封闭线几何形状或多边形存储在存储器中。 存储像素位置存储在对应于行和列位置的地址位置中。 以反向光栅扫描顺序进行数据的第一次连续检查,以对封闭多边形内的像素位置进行初步确定。 以前向或常规光栅扫描顺序进行数据的第二次连续检查,最后确定像素位置是否在多边形内,并且将被填充。 待填充的像素位置的最终确定在执行图形填充操作之前不久被存储,使得以光栅扫描时间高速执行填充操作。

    Cruise airspeed control for aircraft
    10.
    发明授权
    Cruise airspeed control for aircraft 失效
    航空器巡航空速控制

    公开(公告)号:US4641268A

    公开(公告)日:1987-02-03

    申请号:US461357

    申请日:1983-01-27

    CPC classification number: G05D1/0638

    Abstract: A cruise speed control apparatus for aircraft wherein small differences between the target Mach command and the actual Mach number of the aircraft are used to displace the aircraft from its reference altitude to either increase or decrease actual Mach number in the short term. Long term differences are corrected through a special isolation filter to separate the engine control loop and pitch control loop dynamics and an integration technique to adjust the automatic throttles about a thrust target for the commanded Mach.Large differences between the target Mach and the actual Mach or large changes in the commanded Mach are compensated for by a non-linear gain that effectively increases or decreases the target thrust to cause the aircraft to accelerate or decelerate to the commanded Mach.

    Abstract translation: 用于飞行器的巡航速度控制装置,其中目标马赫命令和飞行器的实际马赫数之间的小差异用于使飞机从其参考高度移位以在短期内增加或减少实际马赫数。 通过专门的隔离过滤器来校正长期差异,以分离发动机控制回路和俯仰控制回路动力学以及整合技术,以调整关于指令马赫的推力目标的自动节流。 通过非线性增益来补偿目标马赫数与实际马赫数之间的实际马赫数或实际马赫数之间的较大差异,该非线性增益可有效地增加或减少目标推力,使飞机加速或减速至指令马赫。

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