  Multifunction radars (MFR) are met with complex capability requirements,
involving various kinds of targets and saturating scenarios. In order to
achieve these goals, radar systems use Active Electronically Scanned Array
(AESA) to switch between their functions. This complexity makes it difficult to
assess their performance both taking into account their functional requirements
and the induces cost. In this paper, we first introduce Figures of Merit for
phased array radar operation and performance. We compute these metrics on a set
of test scenarios of varying complexity, involving different kinds of targets,
and we aggregate them into a global notation of MFR radar performances. To
achieve our purpose, we rely on the domain of Multi Criteria Decision Analysis
(MCDA), and more precisely 2-additive Choquet integral.
