Gaussian Filter

Use the Gaussian option to apply a Fast Fourier Transform (FFT) Gaussian filter to a channel.

The filter option is available with the following extensions and menus:

• 1D FFT > 1D Filtering
• Moving Platform Gravity  > Filters > Apply Single FFT Filter

Gaussian filter options

Standard deviation of function (in ground units)	Specifies the standard deviation of the Gaussian function in ground units. Script Parameter: FFTGAUSS.STDDEV
Low or high pass filter	Select Low or High pass filter. Default = Low Script Parameter: FFTGAUSS.PASS

Application Notes

The Gaussian filter is a smooth filter commonly used for low-pass or high-pass applications. It provides gradual attenuation without sharp cutoffs, reducing artifacts such as ringing.

Gaussian Filter

Key Parameters:

k₀: Standard deviation of the Gaussian function in cycles per ground unit.

(Similar to a cutoff, but the function amplitude at this point is only 0.39.)

0/1: Specify 0 for residual or 1 for regional filtering.