lisa.pelt.pelt_swing

lisa.pelt.pelt_swing(period, duty_cycle, window=0.001048576, half_life=32, scale=1024, kind='peak2peak')

Compute an approximation of the PELT signal swing for a given periodic task.

Parameters:

• period (float) – Period of the task in seconds.

• duty_cycle (float) – Duty cycle of the task.

• window (float) – PELT window in seconds.

• half_life (int) – PELT half life, in number of windows.

• scale (float) – PELT scale.

• kind (str) –

  One of:

  • peak2peak: the peak-to-peak swing of PELT.

  • above: the amplitude of the swing above the average value.

  • below: the amplitude of the swing below the average value.

Note

The PELT signal is approximated as a first order filter. This does not take into account the averaging inside a window, but the window is small enough in practice for that effect to be negligible.