Method and apparatus for contour mapping using synthetic aperture radar
    1.
    发明授权
    Method and apparatus for contour mapping using synthetic aperture radar 失效
    使用合成孔径雷达进行轮廓映射的方法和装置

    公开(公告)号:US4551724A

    公开(公告)日:1985-11-05

    申请号:US465365

    申请日:1983-02-10

    IPC分类号: G01S13/90

    CPC分类号: G01S13/9023

    摘要: By using two SAR antennas spaced a known distance, B, and oriented at substantially the same look angle to illuminate the same target area, pixel data from the two antennas may be compared in phase to determine a difference .DELTA..phi. from which a slant angle .theta. is determined for each pixel point from an equation .DELTA..phi.=(2.pi.B/.lambda.)sin(.theta.-.alpha.), where .lambda. is the radar wavelength and .alpha. is the roll angle of the aircraft. The height, h, of each pixel point from the aircraft is determined from the equation h=R cos .theta., and from the known altitude, a, of the aircraft above sea level, the altitude (elevation), a', of each point is determined from the difference a-h. This elevation data may be displayed with the SAR image by, for example, quantizing the elevation at increments of 100 feet starting at sea level, and color coding pixels of the same quantized elevation. The distance, d, of each pixel from the ground track of the aircraft used for the display may be determined more accurately from the equation d=R sin .theta..

    摘要翻译: 通过使用间隔已知距离B的两个SAR天线,并以基本相同的视角定向以照射相同的目标区域,可以相位地比较来自两个天线的像素数据,以确定偏斜角θ 根据方程DELTA phi =(2 pi B / lambda)sin(θ-α)为每个像素点确定,其中λ是雷达波长,α是飞机的侧倾角。 从飞行器的每个像素点的高度h从方程h = Rcosθ和从海平面以上的飞行器的已知高度a,每个点的高度(高度),a' 是从差异决定的啊。 该高程数据可以通过例如以海平面开始以100英尺的增量量化海拔的高程和相同量化高程的颜色编码像素来显示SAR图像。 来自用于显示器的飞行器的地面轨道的每个像素的距离d可以从等式d = Rsinθ更准确地确定。

    High power RF coaxial switch
    2.
    发明授权
    High power RF coaxial switch 失效
    大功率射频同轴开关

    公开(公告)号:US4187416A

    公开(公告)日:1980-02-05

    申请号:US949886

    申请日:1978-10-10

    申请人: Edward R. Caro

    发明人: Edward R. Caro

    IPC分类号: H01P1/12 H01P1/10 H01H13/10

    CPC分类号: H01P1/125

    摘要: A coaxial switch capable of operating in a vacuum with high RF power in the 1.2 GHz range without "multipactor" breakdown, and without relying on pressurization with an inert gas, which requires a hermetic seal, is achieved by completely surrounding the RF carrying conductors of the switch with a high grade solid dielectric, thus eliminating any gaps in which electrons can accelerate.

    摘要翻译: 一种同轴开关,其能够在1.2GHz范围内以高RF功率工作的真空中操作,而不需要“多元反应器”击穿,并且不依赖于需要密封的惰性气体的加压,是通过完全包围RF载体的 该开关具有高等级的固体电介质,从而消除了电子可以加速的任何间隙。

    Coaxial cable connector
    3.
    发明授权
    Coaxial cable connector 失效
    同轴电缆连接器

    公开(公告)号:US4698028A

    公开(公告)日:1987-10-06

    申请号:US904513

    申请日:1986-09-08

    IPC分类号: H01R9/05 H01R13/52

    CPC分类号: H01R9/0521

    摘要: A coaxial cable connector is provided, which resists radio-frequency breakdown in coaxial cables used in the vacuum of outer space. The connector body surrounds an insulator which includes an easily compressible elastomeric portion. An insulated coaxial cable is prepared so its insulation projects beyond the outer conductor and compresses the elastomeric portion of the connector insulator.

    摘要翻译: 提供同轴电缆连接器,可以抵抗在外层空间真空中使用的同轴电缆的射频击穿。 连接器主体围绕包括容易压缩的弹性体部分的绝缘体。 制备绝缘同轴电缆,使其绝缘突出超出外部导体,并压缩连接器绝缘体的弹性体部分。