Computes the autocorrelation of the input sequence X. Wire data to the X input to determine the polymorphic instance to use or manually select the instance.


icon

Inputs/Outputs

  • c2dcdb.png X —

    X is the complex valued input sequence.

  • i2dcdb.png Rxx —

    Rxx is the autocorrelation of X.

  • ii32.png error —

    error returns any error or warning from the VI. You can wire error to the Error Cluster From Error Code VI to convert the error code or warning into an error cluster.

    • 2D Autocorrelation

    The AutoCorrelation VI computes two-dimensional autocorrelation using the following equation:

    for i = –(M–1), …, –1, 0, 1, … , (M–1) and j = –(N–1), …, –1, 0, 1, … , (N–1)

    where M is the number of rows of matrix X and N is the number of columns of matrix X. The indexed elements of X that lie outside its range are equal to zero, as shown in the following relationship:

    x(m,n) = 0, m < 0 or m ≥ M or n < 0 or n ≥ N