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Interferometric imaging (aperture synthesis imaging) is a technique usedby radio astronomers to achieve angular resolution that far surpasses what ispossible with a single large aperture.  A similar technique has been usedfor radar imaging studies of equatorial ionospheric phenomena at theJicamarca Radio Observatory.We present plans for adding an interferometric imaging capability to theEISCAT Svalbard Radar (ESR), a capability which will contributesignificantly to several areas of active research, including naturally andartificially enhanced ion-acoustic echoes and their detailed relationin space and time to optical phenomena, polar mesospheric summerechoes (PMSE), and meteor studies.<P  style="line-height: 20px;">Interferometry using the two antennas of the ESR has demonstratedthe existence of extremely narrow, field-aligned scattering structures,but having only a single baseline is a severe limitation forsuch studies.Building additional IS-class antennas at the ESR is not a trivial task.However, the very high scattering levels in enhanced ion-acoustic echoesand PMSE means that a passive receiver antenna of more modest gain shouldstill be capable of detecting these echoes.<P  style="line-height: 20px;">In this paper we presentsimulations of what an imaging interferometer will be capable ofobserving for different antenna configurations and brightnessdistributions, under ideal conditions, using two different image inversionalgorithms.  We also discuss different antenna andreceiver technologies

An imaging interferometry capability for the EISCAT Svalbard Radar