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    • 1. 发明公开
    • Improvements in or relating to aircraft landing systems
    • Verbesserungen一个Flugzeuglandesystemen。
    • EP0645642A1
    • 1995-03-29
    • EP94112612.0
    • 1994-08-12
    • Siemens Plessey Electronic Systems Limited
    • Parkin, DavidSole, John David
    • G01S1/02G01S1/56
    • G01S1/024G01S1/56
    • An MLS system comprising ground based equipment which includes a microwave signal transmitter (1) arranged to feed microwave signals to radiator elements (7,8) of an array antenna via phase shifter modules (5,6) one of which is provided for each of the said elements (7,8), whereby the production of a scanned microwave signal beam is facilitated, signal monitor/detector (10,12) means effective to provide a detected sample signal (14) derived from the scanned beam, filter means responsive to the detected sample signals for providing a filtered signal derived in dependence upon effective sidelobe signals in the said beam, and comparator means responsive to the filtered signal for providing a transmitter shutdown signal (18) when the filtered signal exceeds a predetermined threshold level for more than a predetermined time during a predetermined number of successive scans.
    • 一种包括地面设备的MLS系统,包括微波信号发射器(1),其布置成经由移相器模块(5,6)将微波信号馈送到阵列天线的散热器元件(7,8),其中一个设置用于 所述元件(7,8),由此便于扫描的微波信号光束的产生,信号监视器/检测器(10,12)有效地提供从扫描光束导出的检测的采样信号(14),滤波器装置响应 检测的采样信号,用于提供根据所述光束中的有效旁瓣信号导出的滤波信号,以及比较器装置,响应滤波后的信号,以在滤波信号超过预定阈值电平时提供发射机关闭信号(18) 在预定次数的连续扫描期间的预定时间。
    • 2. 发明公开
    • Improvements in or relating to aircraft landing systems
    • VerbesserungenfürFlugzeug-Landesysteme。
    • EP0516265A1
    • 1992-12-02
    • EP92301906.1
    • 1992-03-05
    • Siemens Plessey Electronic Systems Limited
    • Smart, Peter BrittonSpencer, Timothy JamesSole, John DavidBarton, Peter WilliamPeckham, RichardGraham, William MorrisWhitehurst, Jonathan
    • G01S1/56G01S1/02
    • G01S1/56G01S1/024
    • An aircraft landing system (10) is disclosed which produces electromagnetic guidance signals to an incoming aircraft (14) and which allow the incoming aircraft (14) to safely land upon the runway (16). This system (10) includes various antenna arrays (12, 18), and (20) which are orientated so as to provide signals in several directions. Each of these arrays has a separate controller (22, 24), and (26) having a separate transmitter controller (74) uniquely coupled to each of the antennas (80, 88). Each of the transmitter controllers (74) separately amplifies the incoming electromagnetic energy from transmitters (52, 54). System 10 further includes several fault monitors (92, 94, 96) which monitor the operation of system (10) and which further provide self test features. System (10) further includes voting circuitry (98, 118) to allow for continued system operation even upon the failure of one or more of the transmitter controllers (74) and/or the monitors (92, 94, 96) and a dual inclined travelling wave manifold (90) and (566) to provide a monitored beam output which is used by monitors (92, 94, 96) to ensure continued system operation. Further, system 10 includes a connectorless coupling of electromagnetic energy between each of the transmitter controllers (74) and the combiners (82, 84). This connectorless coupling allows for a more efficient energy transfer while obviating the need for separate physical connections which are inherently unreliable; inefficient; and costly.
    • 公开了一种飞机着陆系统(10),其向进入的飞行器(14)产生电磁引导信号,并允许进入的飞机(14)安全地着陆在跑道(16)上。 该系统(10)包括各种天线阵列(12,18)和(20),其被定向成在多个方向上提供信号。 这些阵列中的每一个具有单独的控制器(22,24)和(26),其具有唯一地耦合到每个天线(80,88)的单独的发射器控制器(74)。 每个发射机控制器(74)分别放大来自发射器(52,54)的输入电磁能量。 系统10还包括几个故障监视器(92,94,96),其监视系统(10)的操作并进一步提供自检特征。 系统(10)还包括投票电路(98,118),以允许即使在一个或多个发射器控制器(74)和/或监视器(92,94,96)的故障和连续的系统操作 行波管道(90)和(566),以提供由监视器(92,94,96)使用的监视的光束输出,以确保持续的系统操作。 此外,系统10包括在每个发射机控制器(74)和组合器(82,84)之间的无连接器的电磁能耦合。 这种无连接器耦合允许更有效的能量传递,同时避免对本来不可靠的单独的物理连接的需要; 效率低下; 并且成本高昂。