In the last two decades, intense immigration phenomena have occurred in the Mediterranean Sea. Crumbling vessels, adverse weather, diseases, and trades cruelty have led to nearly 20,000 recorded deaths. Currently, the Southern Mediterranean surveillance relies on ground-based information, air and sea patrols, and reports from fishery and commercial vessels, but these means have proven to be insufficient. Space Shepherd is a project funded by Politecnico di Milano to assess the feasibility of a dedicated system capable to merge and process the information coming from heterogeneus satellites to remotely monitor the southern Mediterranean Sea and detect migrants' vessels. In this work we investigate the use of constellations of small satellites to asses if those constellations can be exploited to effectively substitute larger satellites in this application. The search area is precisely modeled, including the integration of the space platform with patrols' scheduling. The inclusion of patrol's allowed for a better optimization of the satellites resources. Results of the simulations performed on a representative scenario of the Mediterranean See are shown, demonstrating that constellations of small satellites can indeed substitute larger satellites.
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机译：在过去的二十年中，地中海发生了强烈的移民现象。摇摇欲坠的血管，恶劣的天气，疾病和交易残忍导致了近20,000名记录的死亡。目前，南地中海监督依赖于地面的信息，空中和海洋巡逻，以及渔业和商业船舶的报告，但这些手段已被证明不足。 Space Shepherd是由Politecnico Di Milano资助的项目，以评估专用系统的可行性，能够合并和处理来自异源卫星的信息，以便远程监控南部地中海和检测移民船只。在这项工作中，如果可以利用这些星座以在本申请中有效地替代更大的卫星，请调查小卫星星座的使用。搜索区域精确建模，包括空间平台与巡逻的调度集成。允许巡逻队允许更好地优化卫星资源。显示了在地中海的代表性场景进行的模拟结果，表明小卫星的星座确实可以替代更大的卫星。
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