\documentclass[../main.tex]{subfiles}

\begin{document}
\chapter{Timing Mechanisms}
\label{sec:timing}
Need reference system with better accuracy,


\section{Global Navigation Satellite System}
$\sigma_t \sim 20 \ns$

\section{White Rabbit}

\section{Beacon}
\subsection{Fourier Transform}
\begin{equation}
	\label{eq:fourier}
	\hat{f}(\omega) = \frac{1}{2\pi} \int \dif{t}\, f(t)\, \exp(i \omega t)
\end{equation}

\subsection{Beacons in Airshower timing}

\end{document}