# Coupling & correlation

Track contributions across many auxiliary channels and multi-dimensional fields.

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:::{grid-item-card} Bruco: Coherence Analysis
:link: advanced_bruco
:link-type: doc

Brute-force coherence between a target channel and many auxiliary channels, with parallel processing and nonlinear-coupling hypothesis tests.
:::

:::{grid-item-card} Coupling Analysis: Multi-Channel Coupling
:link: advanced_coupling
:link-type: doc

Quantify how much a witness sensor's motion couples into a target channel with `CouplingFunctionAnalysis`.
:::

:::{grid-item-card} Multi-Dimensional Field Analysis: Beam Profiles and Spatial Statistics
:link: advanced_field_analysis
:link-type: doc

Analyze 4D spatial-temporal data such as optical beam profiles using the `gwexpy.fields` module.
:::

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```{toctree}
:hidden:

advanced_bruco
advanced_coupling
advanced_field_analysis
```