Distribution-free filter
    1.
    发明授权
    Distribution-free filter 失效
    无分配过滤器

    公开(公告)号:US4012627A

    公开(公告)日:1977-03-15

    申请号:US617886

    申请日:1975-09-29

    IPC分类号: G01S7/292 H03K5/153 G06F15/36

    CPC分类号: G01S7/2927

    摘要: Data generally representative of presumed noise in an environment are colted and compared with data from one or more statistically symmetric observations of a selected portion of that environment. The data are ranked in order of magnitude and the rank order is stored in a shift register by associating one of two values to each datum according to its source. A plurality of register outputs are combined in summers to produce a representation of the rank order in terms of a complete orthogonal set of functions corresponding to the two-valued function stored in the register. A plurality of adjustable weight function multipliers are associated with the summers, their values having been determined according to statistical assumptions as to the nature of the underlying suspected signal and presumed noise. The outputs of the multipliers are summed and then are compared to a pre-determined threshold value, indicating the presence or absence of signal in the selected portion of the environment.

    摘要翻译: 收集一般表示环境中推测噪声的数据,并将其与来自该环境的选定部分的一个或多个统计学对称观测数据进行比较。 数据按数量级别排列,并且通过根据其来源将两个值中的一个值相关联到每个数据,将秩顺序存储在移位寄存器中。 多个寄存器输出在加法器中组合以产生与存储在寄存器中的两值函数相对应的完整的正交函数集合的等级次序的表示。 多个可调节权重函数乘法器与加法器相关联,它们的值已经根据关于潜在疑似信号的性质和推测噪声的统计假设来确定。 将乘法器的输出相加,然后与预定的阈值进行比较,指示环境的选定部分中是否存在信号。