A Project Baseline Schedule is usually a project Control Level Schedule (Level 3) that is developed during the project planning and early execution stage with a proposal document which was an initially developed project execution schedule for the proposal. The Project Baseline Schedule indicates entire project time frames and contractual and project key milestones roll down into the Project Control Level Schedule from the Level 1 (Project Master Schedule) and Level 2 (Project Summary Schedule).
Related Definitions in the Project: The Project Baseline; Project Schedule; Project Management