The Laboratory for Systems, Instrumentation and Modeling in Science and Technology for Space and the Environment (SIM), is a research center established in 2003, associated with the Faculty of Sciences of the University of Lisbon (FCUL) and funded by "Fundação para a Ciência e a Tecnologia" thought its "Programa de Financiamento Plurianual".

The SIM laboratory has two research groups (ICSEO and CCIAM) that includes researchers from the University of Lisbon and the Faculty of Engineering of the University of Porto (FEUP) that provide the facilities, infrastructure and technical collaboration to accomplish our research goals.