current code and TeX. code fine?!?!?!

This commit is contained in:
2017-04-29 20:57:12 +02:00
parent fc72a75f57
commit 60712689cf
41 changed files with 804 additions and 234 deletions

14
tex/chapters/work.tex Normal file → Executable file
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@@ -100,12 +100,12 @@
\begin{figure}[t!]
\input{gfx/wifiop_show_optfunc_params}
\label{fig:wifiOptFuncTXPEXP}
\caption{
The average error (in \SI{}{\decibel}) between all reference measurements and corresponding model predictions
for one \docAPshort{} dependent on \docTXP{} \mTXP{} and \docEXP{} \mPLE{}
[known position $\mPosAPVec{}$, fixed \mWAF{}] denotes a convex function.
}
\label{fig:wifiOptFuncTXPEXP}
\end{figure}
For systems that demand a higher accuracy, one can choose a compromise between fingerprinting and
@@ -138,12 +138,12 @@
\begin{figure}[t!]
\input{gfx/wifiop_show_optfunc_pos_yz}
\label{fig:wifiOptFuncPosYZ}
\caption{
The average error (in \SI{}{\decibel}) between reference measurements and model predictions
for one \docAPshort{} dependent on $y$- and $z$-position [fixed $x$, \mTXP{}, \mPLE{} and \mWAF{}]
usually denotes a non-convex function with multiple [here: two] local minima.
}
\label{fig:wifiOptFuncPosYZ}
\end{figure}
Such functions demand for optimization algorithms, that are able to deal with non-convex functions,
@@ -186,6 +186,9 @@
axis-aligned bounding box. This approach allows a distinction between in- and outdoor-regions
or locations that are expected to highly differ from their surroundings.
\todo{AP wird in einer region nur dann beruecksichtigt, wenn mindestanzahl an messungen vorhanden ist!}
\todo{das heißt aber, dass an unterschiedlichen stellen unterschiedlich viele APs verglichen werden. das geht ned. deshalb feste -100}
\subsection{\docWIFI{} quality factor}
@@ -243,8 +246,11 @@
When scanning for \docAPshort{}s one will thus receive several responses from the same hardware, all with
a very small delay (micro- to milliseconds). Such measurements may be grouped using some aggregate
function like average, median or maximum.
Furthermore, VAP grouping can be used to suppress unlikely observations: If a physical hardware is known
to provide six virtual networks, it is unlikely to only see one of those networks. This is likely due to
temporal effects and/or multipath signal propagation and the received signal strength will often be far from
the normal average. It thus makes sense to just omit such unlikely observations, focusing on the remaining, stable ones.