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\section{Overview}\label{sec:intro}  This document presents a parametric model to help design an Interferometric Array. One aspect of Array Design is the value vs. cost trade-off inherent to many of its parameters. This is a Multiple ObjectiveAnalysis  problem. This document describes design parameters in \S~\ref{sec:var} and a set of equations for cost objectives in \S~\ref{sec:obj}. A spreadsheet that uses these design parameters and produces a CSV file for analysis of the emerging Pareto Front is introduced in \S~\ref{sec:spreadsheet}. This code output  is consistent with MOVA framework ready to perform Multiple Objective Visual Analytics (MOVA) as  proposed in \cite{mova}. \section{Parameters}\label{sec:var}  This section present selected design parameters that influence the selected objectives in \S~\ref{sec:obj}.  \subsection{Antenna Aspects} 
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\section{Conversation notes}  \subsection{Engineering cost vs. Calibration cost}  Tricky because you can compensate antenna quality with software. So the equations must capture this trade off.