Many geophysical map estimation problems appear to be multidimensional, but actually they are not. To see the tip of the iceberg, consider this example: On a two-dimensional cartesian mesh, the function

has the autocorrelation .

Likewise, on a one-dimensional cartesian mesh,

the function

has the autocorrelation .

Observe the numbers in the one-dimensional world are identical
with the numbers in the two-dimensional world.
This correspondence is no accident.

- FILTERING ON A HELIX
- FINITE DIFFERENCES ON A HELIX
- CAUSALITY AND SPECTAL FACTORIZATION
- WILSON-BURG SPECTRAL FACTORIZATION
- HELIX LOW-CUT FILTER
- THE MULTIDIMENSIONAL HELIX
- SUBSCRIPTING A MULTIDIMENSIONAL HELIX

4/27/2004