Method of receiving pulses of the M.L.S. type and system for
implementing this method
    21.
    发明授权
    Method of receiving pulses of the M.L.S. type and system for implementing this method 失效
    接收M.L.S.的脉冲的方法 用于实现此方法的类型和系统

    公开(公告)号:US5032840A

    公开(公告)日:1991-07-16

    申请号:US543597

    申请日:1990-06-25

    申请人: Serge Hethuin

    发明人: Serge Hethuin

    IPC分类号: G01S1/54 G01R19/30 G01S1/56

    CPC分类号: G01R19/30 G01S1/56

    摘要: A method of receiving pulses of the M.L.S. type and a system for implementing this method. The method comprises a dividing stage for dividing the received pulse into zones (Z1, . . . Z8). A mean value is determined of the samples within each zone in order to obtain the points PI(1) . . . PI(8). The straight line DR at best passing through these points provides the instant (tMAX) which is the "time" of the pulse.

    摘要翻译: 接收M.L.S的脉冲的方法 类型和实现该方法的系统。 该方法包括用于将接收的脉冲分成区域(Z1,...,Z8)的分割级。 为了获得点PI(1),确定每个区域内的样本的平均值。 。 。 PI(8)。 最好通过这些点的直线DR提供作为脉冲“时间”的时刻(tMAX)。

    Auto-correlation arrangement
    22.
    发明授权
    Auto-correlation arrangement 失效
    自相关布置

    公开(公告)号:US4791599A

    公开(公告)日:1988-12-13

    申请号:US895967

    申请日:1986-08-12

    IPC分类号: G06F17/15 G06F15/20 G06F7/38

    CPC分类号: G06F17/15

    摘要: An auto-correlation apparatus for producing N auto-correlation values R(k), (k=0, . . . N-1) of an auto-correlation function of a sequence of digital samples x(n), (n=-.infin. . . . 0, . . . p) of an input signal, each sample being encoded as words of "b" binary bits, each value R(k) being defined by the formula: ##EQU1## wherein M is the number of digital samples. The apparatus comprises a random access memory for storing at respective addresses therein words (X,R) each of which is a concatenation of a word representing the value of a signal sample (X) and a word representing an auto-correlation value (R). A multiplier cooperating with an adder performs multiplying and summing operations on the M most recent signal sample words in accordance with the formula for R(k). A memory addressing and sequencing member supplies an addressing cycle to the memory for each received signal sample words, and controls the operations of the multiplier and adder.

    摘要翻译: 一种用于产生数字样本序列x(n)的自相关函数的N个自相关值R(k),(k = 0,...,N-1)的自相关装置,(n = INFINITY ... 0,...,p),每个样本被编码为“b”个二进制位的字,每个值R(k)由下式定义:其中M是 数字样品。 该装置包括一个随机存取存储器,用于在其各个地址处存储单词(X,R),每个单词是表示信号样本(X)的值和代表自相关值(R)的单词的级联, 。 与加法器配合的乘法器根据R(k)的公式对M个最新信号采样字执行乘法和求和操作。 存储器寻址和排序成员为每个接收信号采样字向存储器提供寻址周期,并且控制乘法器和加法器的操作。

    Radar device for measuring the distance of the device to a surface
    23.
    发明授权
    Radar device for measuring the distance of the device to a surface 失效
    用于测量设备到表面的距离的雷达设备

    公开(公告)号:US4766436A

    公开(公告)日:1988-08-23

    申请号:US065535

    申请日:1987-06-23

    IPC分类号: G01S7/35 G01S13/34 G01S13/26

    CPC分类号: G01S13/34 G01S13/343

    摘要: This radar device for measuring the distance h of the device to a surface (2) includes transmission means (5) for transmitting to the surface a frequency-modulated wave E(t) provided by an oscillator (14) having a frequency control, receiving means (7) for receiving this wave R(t) reflected from the surface, a mixer circuit (10) for producing a beat wave between the transmitted and received waves and a processing circuit (20) including a beat-wave-digitizing circuit (25) and a time-frequency transform operator (27) for supplying frequency components from which the distance h is determined. This processing circuit (20) further includes an auto-correlation operator for effecting an auto-correlation of the beat wave digitized by the circuit (25) and also spectrum processing means (32) for finally determining the distance h.

    摘要翻译: 用于测量设备到表面(2)的距离h的该雷达设备包括用于向表面发送由具有频率控制的振荡器(14)提供的频率调制波E(t)的发送装置(5) 用于接收从表面反射的该波R(t)的装置(7),用于产生发射波和接收波之间的拍波的混频器电路(10)和包括拍波数字化电路(20)的处理电路(20) 25)和用于提供确定距离h的频率分量的时频变换算子(27)。 该处理电路(20)还包括自相关运算器,用于实现由电路(25)数字化的拍波的自相关,以及用于最终确定距离h的频谱处理装置(32)。

    Control device for a synchro receiver
    24.
    发明授权
    Control device for a synchro receiver 失效
    同步接收机的控制装置

    公开(公告)号:US4598289A

    公开(公告)日:1986-07-01

    申请号:US510092

    申请日:1983-07-01

    IPC分类号: G08C19/38 G08C19/48 G09F13/36

    CPC分类号: G08C19/48

    摘要: A control device suitable for synchros comprising three stator windings. The device comprises four circuit branches with the inputs of the first and the second branches interconnected to receive a first voltage from the ends of the stator windings of the synchro transmitter and with the inputs of the third and the fourth branches interconnected to receive a second voltage from the ends of the stator windings of the synchro transmitter. Two adder elements supply control voltages to the stator windings of the synchro receiver. Two inputs of the first adder are connected to the outputs of the first and the third branches, respectively and the two inputs of the secnd adder are connected to the outputs of the second and the fourth branches. These branches have transfer functions in the form sin (.alpha.+.phi.1), sin (.alpha.+.phi.2), sin (.alpha.+.phi.3), sin (.alpha.+.phi.4), respectively, wherein .alpha. represents the information supplied by a digital element and .phi.1, .phi.2, .phi.3, .phi.4 represent the differentphase shift angles. Used to display the position on the instrument panel of aeroplanes.

    摘要翻译: 适用于包括三个定子绕组的同步的控制装置。 该装置包括四个电路分支,其中互连第一和第二分支的输入,以从同步发射机的定子绕组的端部接收第一电压,并且互连第三和第四分支的输入,以接收第二电压 从同步发射机的定子绕组的端部。 两个加法器元件向同步接收器的定子绕组提供控制电压。 第一加法器的两个输入分别连接到第一和第三分支的输出,并且第二加法器的两个输入连接到第二和第四分支的输出。 这些分支具有分别为sin(α+ phi 1),sin(α+ phi 2),sin(α+ phi 3),sin(α+ phi 4)的转移函数,其中α表示由 数字元素和phi 1,phi 2,phi 3,phi 4表示不同的相位角。 用于显示飞机仪表板上的位置。