mirror of
https://gitlab.science.ru.nl/mthesis-edeboone/m.internship-documentation.git
synced 2025-06-18 05:06:42 +02:00
Thesis work: WUotD: beacon disciplining
This commit is contained in:
parent
96f7f58d8d
commit
5c733f4c37
3 changed files with 313 additions and 72 deletions
|
@ -26,14 +26,14 @@ Standalone devices,
|
|||
\subsubsection{Time Synchronisation}
|
||||
\label{sec:timesynchro}
|
||||
The main method of synchronising multiple stations is by employing a \gls{GNSS}.
|
||||
This system should deliver timing with an accuracy in the order of $50\ns$ (see Section~\ref{sec:grand:gnss}).
|
||||
This system should deliver timing with an accuracy in the order of $10\ns$ \cite{} (see Section~\ref{sec:grand:gnss}).
|
||||
\\
|
||||
|
||||
Need reference system with better accuracy to constrain (Figure~\ref{fig:reference-clock}).
|
||||
Need reference system with better accuracy to constrain current mechanism (Figure~\ref{fig:reference-clock}).
|
||||
|
||||
\begin{figure}
|
||||
\centering
|
||||
\includegraphics[width=\textwidth]{clocks/reference-clock.pdf}
|
||||
\includegraphics[width=0.5\textwidth]{clocks/reference-clock.pdf}
|
||||
\caption{
|
||||
Using a reference clock to compare two other clocks.
|
||||
}
|
||||
|
@ -46,9 +46,47 @@ Need reference system with better accuracy to constrain (Figure~\ref{fig:referen
|
|||
\end{figure}
|
||||
|
||||
|
||||
\subsection{Interferometry}
|
||||
\section{Interferometry}
|
||||
\label{sec:interferometry}
|
||||
Requires $\sigma_t \lesssim 1\ns$
|
||||
Rough outline of Interferometry?
|
||||
\\
|
||||
|
||||
Requires $\sigma_t \lesssim 1\ns$ \cite{Schoorlemmer:2020low}
|
||||
|
||||
\begin{figure}
|
||||
\includegraphics[width=0.5\textwidth]{radio_interferometry/Schematic_RIT_extracted.png}
|
||||
\caption{From H. Schoorlemmer}
|
||||
\end{figure}
|
||||
|
||||
|
||||
\begin{equation}
|
||||
\label{eq:propagation_delay}
|
||||
\Delta_i = \frac{ \left|{ \vec{x} - \vec{a_i} }\right| }{c} n_{eff}
|
||||
\end{equation}
|
||||
|
||||
|
||||
\begin{equation}
|
||||
\label{eq:interferometric_sum}
|
||||
S(\vec{x}, t) = \sum_i S_i(t + \Delta_i(\vec{x}))
|
||||
\end{equation}
|
||||
|
||||
|
||||
\begin{figure}
|
||||
\begin{subfigure}[t]{0.3\textwidth}
|
||||
\includegraphics[width=\textwidth]{radio_interferometry/trace_overlap_bad.png}
|
||||
\label{fig:trace_overlap:bad}
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}[t]{0.3\textwidth}
|
||||
\includegraphics[width=\textwidth]{radio_interferometry/trace_overlap_medium.png}
|
||||
\label{fig:trace_overlap:medium}
|
||||
\end{subfigure}
|
||||
\hfill
|
||||
\begin{subfigure}[t]{0.3\textwidth}
|
||||
\includegraphics[width=\textwidth]{radio_interferometry/trace_overlap_best.png}
|
||||
\label{fig:trace_overlap:best}
|
||||
\end{subfigure}
|
||||
\caption{Trace overlap due to wrong positions}
|
||||
\label{fig:trace_overlap}
|
||||
\end{figure}
|
||||
\end{document}
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue