From 83476de572e6c4d0758c24c34b53a659c35b8402 Mon Sep 17 00:00:00 2001
From: Eric Teunis de Boone <ericteunis@deboone.nl>
Date: Wed, 7 Jun 2023 19:53:06 +0200
Subject: [PATCH] STEP-UP: highlight beacon and GPS in Beacon figure

---
 .../2023-STEP_UP.tex                          | 60 +++++++++++++++----
 1 file changed, 48 insertions(+), 12 deletions(-)

diff --git a/presentations/2023-06-01_step_up_interview/2023-STEP_UP.tex b/presentations/2023-06-01_step_up_interview/2023-STEP_UP.tex
index bad9fef..b3d284a 100644
--- a/presentations/2023-06-01_step_up_interview/2023-STEP_UP.tex
+++ b/presentations/2023-06-01_step_up_interview/2023-STEP_UP.tex
@@ -11,6 +11,7 @@
 \usepackage[backend=bibtex,style=trad-plain]{biblatex}
 \usepackage{appendixnumberbeamer}
 \usepackage{graphicx}
+\usepackage{tikz}
 \graphicspath{{.}{./figures/}{../../figures/}}
 \usepackage{todo}
 
@@ -27,7 +28,7 @@
 % no to navigation, yes to frame numbering
 \beamertemplatenavigationsymbolsempty
 \setbeamerfont{page number in head/foot}{size=\normalsize}
-\setbeamertemplate{page number in head/foot}{\insertframenumber/\insertmainframenumber}
+\setbeamertemplate{page number in head/foot}{\insertframenumber/\inserttotalframenumber}
 %\setbeamercolor{page number in head/foot}{fg=red}
 \setbeamerfont{section in head/foot}{size=\small}
 \setbeamercolor{section in head/foot}{fg=gray}
@@ -41,15 +42,37 @@
     \usebeamertemplate*{section in head/foot}%
     \hfill%
   \end{beamercolorbox}
-  \begin{beamercolorbox}[wd=.2\paperwidth,ht=2.25ex,dp=1ex,sep=0pt]{my empty section}
+  \begin{beamercolorbox}[wd=.1\paperwidth,ht=2.25ex,dp=1ex,sep=0pt]{my empty section}
     \hfill%
   \end{beamercolorbox}
-  \begin{beamercolorbox}[wd=.1\paperwidth,ht=2.25ex,dp=1ex,leftskip=1em,rightskip=1em,sep=0pt]{page number in head/foot}%
+  \begin{beamercolorbox}[wd=.2\paperwidth,ht=2.25ex,dp=1ex,leftskip=1em,rightskip=1em,sep=0pt]{page number in head/foot}%
 	\hfill%
     \usebeamertemplate*{page number in head/foot}%
   \end{beamercolorbox}}%
 }
 
+%% From https://tex.stackexchange.com/a/55849
+% Keys to support piece-wise uncovering of elements in TikZ pictures:
+% \node[visible on=<2->](foo){Foo}
+% \node[visible on=<{2,4}>](bar){Bar}   % put braces around comma expressions
+%
+% Internally works by setting opacity=0 when invisible, which has the
+% adavantage (compared to \node<2->(foo){Foo} that the node is always there, hence
+% always consumes space plus that coordinate (foo) is always available.
+%
+% The actual command that implements the invisibility can be overriden
+% by altering the style invisible. For instance \tikzsset{invisible/.style={opacity=0.2}}
+% would dim the "invisible" parts. Alternatively, the color might be set to white, if the
+% output driver does not support transparencies (e.g., PS)
+%
+\tikzset{
+  invisible/.style={opacity=0},
+  visible on/.style={alt={#1{}{invisible}}},
+  alt/.code args={<#1>#2#3}{%
+    \alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}} % \pgfkeysalso doesn't change the path
+  },
+}
+
 \hypersetup{pdfpagemode=UseNone} % don't show bookmarks on initial view
 
 
@@ -92,13 +115,6 @@
 			\quad {\small Supervisor: Harm Schoorlemmer, IMAPP, Radboud University}\\
 			\quad {\small ``Enhancing Timing Accuracy in Air Shower Radio Detectors'' }\\
 	\end{itemize}
-
-	\vfill
-
-	\begin{figure}
-		\includegraphics[width=0.5\textwidth]{beacon/array_setup_gps_transmitter_cows.png}
-		\imagecredit{H. Schoorlemmer}
-	\end{figure}
 \end{frame}
 \note[itemize]{
 	\item Interests since Bachelor's, continued in Master's
@@ -227,7 +243,7 @@
 \section{Implementing Interferometry in GRAND}
 \begin{frame}{Time synchronisation}
 	%\vspace*{-2em}
-	Interferometry: Amplitude + Phase information\\
+	Interferometry: Amplitude + Timing information of the $\vec{E}$-field\\
 	\vspace*{ 0.8em }
 
 	Required time accuracy $< \frac{1}{4f} \sim 1 \mathrm{ns}$ (GNSS $\gtrsim 5 \mathrm{ns}$)
@@ -265,7 +281,27 @@
 	\end{columns}
 \end{frame}
 
-\begin{frame}{Radio Interferometry and GRAND}
+\begin{frame}{Timing Synchronisation: Beacon}
+	\begin{figure}
+		\begin{tikzpicture}
+			\node[anchor=south west, inner sep=0] (image) at (0,0) {\includegraphics[width=0.8\textwidth]{beacon/array_setup_gps_transmitter_cows.png}};
+			\begin{scope}[x={(image.south east)}, y={(image.north west)}]
+				%\draw[help lines,xstep=.1,ystep=.1] (0,0) grid (1,1);
+				%\foreach \x in {0,1,...,9} { \node [anchor=north] at (\x/10,0) {0.\x}; }
+				%\foreach \y in {0,1,...,9} { \node [anchor=east] at (0,\y/10) {0.\y}; }
+				\draw[red, ultra thick, visible on=<2>] (0.85,0.87) circle [radius=8mm];
+				\draw[green, ultra thick, visible on=<3>] (0.23,0.32) circle [radius=8mm];
+			\end{scope}
+		\end{tikzpicture}
+		\imagecredit{H. Schoorlemmer}
+	\end{figure}
+
+\end{frame}
+\note{
+	Single frequency interest due to Auger (TV@67MHz)
+}
+
+\begin{frame}{Radio Interferometry in GRAND}
 	\begin{figure}
 		\centering
 		\only<1>{\hspace*{-2em}}