feat: Reference trajectory builder + Kalman-based fitter#5400
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andiwand wants to merge 9 commits intoacts-project:mainfrom
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feat: Reference trajectory builder + Kalman-based fitter#5400andiwand wants to merge 9 commits intoacts-project:mainfrom
andiwand wants to merge 9 commits intoacts-project:mainfrom
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Implementation of a reference trajectory builder tool that propagates through the detector with provided start parameters and records predicted parameters and jacobians in the track EDM.
On top of that one can attach source links (raw, uncalibrated measurements) and calibrate them. Finally,
filtercan be used to run an updater (usually the Kalman filter in form of theGainMatrixUpdater) to forward filter the measurements. This is decoupled form the propagation and uses the existing linearization stored on the track.An example implementation is provided based on the existing Kalman filter. The difference of the two approaches is where the linearization is formed. While the existing Kalman filter linearizes depending on previous filter steps, this alternative implementation runs a single linearization for the full trajectory based on the start parameters.
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cc @stephenswat