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    Digital compressive receiver
    1.
    发明授权
    Digital compressive receiver 失效
    数字压缩接收机

    公开(公告)号：US4270209A

    公开(公告)日：1981-05-26

    申请号：US101259

    申请日：1979-12-07

    申请人： Damian F. Albanese

    发明人： Damian F. Albanese

    IPC分类号： H03H17/02 ,  H03J7/32 ,  H03H15/00 ,  H03K3/84

    CPC分类号： H03J7/32 ,  H03H17/0254

    摘要： A compressive receiver for developing a series of time-based identifying pulses corresponding to discrete received signals having various frequencies within a predetermined band of surveillance. A multiple local oscillator function is included, effectively dividing the predetermined band of interest into small frequency increments, each of these local oscillator signals being coded by a pseudo-random coded sequence (bi-phase code) of maximal length. Each frequency increment thus developed is coded by this sequence delayed by one bit duration as compared to that applied to the local oscillator frequency immediately preceding it. A mixer receiving input signals in the band of interest, and also the multiple local oscillator signals thus generated and coded, has its output processed by a passive correlator which provides pulses at times determined by the frequencies extant in the input signal.

    摘要翻译： 一种用于开发一系列基于时间的识别脉冲的压缩接收器，其对应于在预定监视带内具有各种频率的离散接收信号。 包括多个本地振荡器功能，将预定的感兴趣频带有效地划分为小的频率增量，这些本地振荡器信号中的每一个被最大长度的伪随机编码序列（双相码）编码。 这样产生的每个频率增量与延迟一个位持续时间的序列相比，其应用于紧邻其的本地振荡器频率。 在感兴趣的频带中接收输入信号的混频器以及由此产生和编码的多个本机振荡器信号的输出端被无源相关器处理，该无源相关器在由输入信号中存在的频率确定的时间内提供脉冲。

    Adjustable frequency scanning signal processor
    2.
    发明授权
    Adjustable frequency scanning signal processor 失效
    可调频率扫描信号处理器

    公开(公告)号：US3955137A

    公开(公告)日：1976-05-04

    申请号：US494126

    申请日：1974-08-02

    申请人： John B. Harrington ,  Michael Waldner

    发明人： John B. Harrington ,  Michael Waldner

    IPC分类号： G01R23/00 ,  H03J7/32

    CPC分类号： H03J7/32 ,  G01R23/00

    摘要： A compressive or "microscan" signal processor adapted for the simultaneous measurement of multifrequency signal components which encompass a broad frequency spectrum. In accordance with one embodiment of the invention, the applied signals are processed through a mixer which is driven by a linear frequency versus time waveform sweep signal. The output from the mixer is applied to one input port of a nonlinear correlator, and a second input port of the correlator is supplied with a linear frequency versus time waveform signal whose slope is opposite from that of the sweep signal applied to the mixer. The output signal from the correlator comprises a series of pulses which are displaced in time as a function of the frequency of the corresponding portions of the applied signals, and whose amplitudes are representative of the relative energy distribution of the applied signals.

    摘要翻译： 适用于同时测量包含宽频谱的多频信号分量的压缩或“微”信号处理器。 根据本发明的一个实施例，所施加的信号通过由线性频率对时间波形扫描信号驱动的混频器来处理。 来自混频器的输出被施加到非线性相关器的一个输入端口，并且相关器的第二输入端口被提供有与施加到混频器的扫描信号的斜率相反的线性频率对时间波形信号。 来自相关器的输出信号包括一系列随时间变化的脉冲，这些脉冲作为施加信号的相应部分的频率的函数，其幅度表示所施加的信号的相对能量分布。