Varying solutions over time

By default, di-calibrate uses only one "timeblock", i.e. all data timesteps are averaged together during calibration. This provides good signal-to-noise, but it is possible that calibration is improved by taking time variations into account. This is done with --timesteps-per-timeblock (-t for short).

If --timesteps-per-timeblock is given a value of 4, then every 4 timesteps are calibrated together and written out as a timeblock. Values with time units (e.g. 8s) are also accepted; in this case, every 8 seconds worth of data are averaged during calibration and written out as a timeblock.

Depending on the number of timesteps in the data, using -t could result in many timeblocks written to the calibration solutions. Each solution timeblock is plotted when these solutions are given to solutions-plot. For each timestep in question, the best solution timeblock is used when running solutions-apply.

Implementation

When multiple timeblocks are to be made, hyperdrive will do a pass of calibration using all timesteps to provide each timeblock's calibration with a good "initial guess" of what their solutions should be.