plane_wave
plane_wave(
frequency = 20.0,
velocity = 500.0,
duration = 2.048,
time_step = 0.002,
distance_step = 4.0,
channel_count = 128,
time_min = 2020-01-01,
)
A plane wave: one frequency crossing the array at one apparent velocity.
Every window of it has the same frequency-wavenumber content, a single peak at (frequency, -frequency / velocity), which makes it a clean input for spectral transforms and moveout filters.
Parameters
| Parameter | Description |
|---|---|
| frequency | The wave’s frequency in Hz. |
| velocity |
The apparent velocity along the fibre in m/s; negative moves the wave the other way. |
| duration | The duration of the time coordinate in seconds. |
| time_step | The time step in seconds. |
| distance_step | The distance step in metres. |
| channel_count | The number of distance channels. |
| time_min | The start time in the metadata. |
See Also
ricker_moveout: a wavelet with an onset crossing the array at one apparent velocity, for time-domain moveout.