01182nas a2200241   4500000000100000000000100001008004100002260000900043653001600052653002200068653003500090653001500125100002100140700002100161700001400182700001900196700002100215700001700236245005800253300001200311490000700323520061000330       2011                            d  c201110aISAR Images10aMaritime Security10aMaritime Situational Awareness10aOTH-RADARs1 aFabrizio Berizzi1 aAmleto Gabellone1 aEnzo Mese1 aAmerigo Capria1 aMarco Martorella1 aWalter Matta00aMSA System Concept for Mediterranean Sea Surveillance  a183-2060 v273 a<p>This paper focuses on general considerations and ideas on a Maritime Situational Awareness (MSA) system concept addressing specifically the surveillance of the Mediterranean Sea. It presents analysis of the main potentials and limits of existing Maritime Surveillance Systems (MSSs) operating on the Mediterranean Sea and identified technology gaps. The authors then propose MSA system architecture, applications, requirements and sensors. The paper concludes with a few considerations on signal processing and data fusion techniques, required for the implementation of the MSA system capabilities.</p>