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

\graphicspath{
	{.}
	{../../figures/}
	{../../../figures/}
}

\begin{document}
\chapter{Introduction}
\label{sec:introduction}


\section{Cosmic Rays}
\label{sec:airshowers}

\subsection{Airshowers}
\label{sec:airshowers}

\subsection{Detectors}
\label{sec:detectors}
Pierre Auger,
GRAND

\subsection{Interferometry}
\label{sec:interferometry}
Requires $\sigma_t \lesssim 1\ns$


\section{Time Synchronisation}
\label{sec:timesynchro}
Need reference system with better accuracy to constrain
See Section~\ref{sec:grand:gnss}.

\begin{figure}
	\centering
	\includegraphics[width=\textwidth]{clocks/reference-clock.pdf}
	\caption{
		Using a reference clock to compare two other clocks.
	}
	\label{fig:reference-clock}
\end{figure}
\end{document}
