Institute for Defense Analyses | 26,616 followers on LinkedIn. IDA (Institute for Defense Analyses) – a not-for-profit corporation headquartered in Alexandria, Virginia just outside Washington, DC – operates three Federally Funded Research and Development Centers (FFRDCs) in the public interest: the Systems and Analyses Center, the Science and Technology Policy Institute, and the Center for Communications and Computing. Sponsors rely on IDA for dispassionate, fact-based, and scientifically rigorous research and advice to inform their decisions. Since 1956, IDA’s basic mission has remained unchanged – bring the best scientific, technical, and analytic talent to bear on issues critical to U.S.