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\section{Overview}\label{sec:intro}  This document presents a parametric model to help design an Interferometric Array. It describes the design parameters in \S~\ref{sec:var} and the system performance objectives in \S~\ref{sec:obj}, and the relationship between them.   A python code usedto generate data in the format required  for visual analysis of array design options performance is presented introduced  in \S~\ref{sec:python}. The python code is consistent with parameters and objectives selection in \S~\ref{sec:var} and \S~\ref{sec:obj}, and the mathematical relationships between them. \section{Variables}\label{sec:var}  This section aims to include all relevant design parameters that might influence the selected performance objectives in \S~\ref{sec:obj}.  \subsection{Antenna Aspects} 
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