This proposal addresses the specific need for a modular, open-source simulation framework for early stage radar algorithm development. It is important to be able to test and evaluate the developed capabilities and technologies within a simulation environment that can verify the capabilities presented, test the functional limits of those capabilities, and provide meaningful comparisons with alternative approaches. The proposed solution approach addresses three key objectives: 1) the identification of key model data and algorithm support modules within the simulation framework; 2) the design of selected algorithm support modules for a demonstration of framework functionality and common performance metrics; 3) the software architecture and framework to implement algorithm support modules, external interfaces for vendor plug-n-play component integration, and analysis displays. The goal of the proposed solution is to provide an open-source, plug-n-play, simulation framework for early stage radar development. The key objective is to provide a framework that will allow various radar algorithms to be evaluated side-by-side, or in connection with one another, in order to evaluate baseline performance, comparative analyses, and other performance assessments early in the algorithm development stages. Approved for Public Release 14-MDA-8047 (14 Nov 14)