Download eBook for Free

User Manual

FormatFile SizeNotes
PDF file 2.2 MB

Use Adobe Acrobat Reader version 10 or higher for the best experience.

Download Support Files

Excel Tool

FormatFile SizeNotes
zip file 0.3 MB

The file(s) provided above are ZIP-formatted archives, which most modern systems can natively unpack. If your computer does not unpack the archive when you double-click it, you may need to use a separate decompression program such as UnZip.

The Defensive Space Analysis Tool (DSPAT) is a utility developed by RAND Project AIR FORCE (PAF) to support the analysis of alternative approaches to defensive and offensive space control. Applied in a framework informed by sequential game theory, DSPAT can help strategic planners anticipate what space control capabilities potential adversaries would likely develop and employ in confrontations with the United States and help U.S. decisionmakers assess the potential benefits and risks of alternative approaches to deter or defeat those threats.

DSPAT guides analysts through the sequential game-theoretic analysis and helps them assess the range of potential space control moves and counter-moves that could occur in an engagement. The tool evaluates offensive space control (OSC), defensive space control (DSC) and counter-defensive space control (C-DSC) options available to aggressors and defenders.

This user's manual explains how to employ Defensive Space Analysis Tool (DSPAT) within a game-theoretic framework for assessing the potential deterrent value, escalation risks, and political costs of alternative space control options. This manual describes the tool; guides users through the processes of opening, populating, and running it; and explains how to interpret its outputs.

Research conducted by

The research reported here was sponsored by the executive director of the Space and Missile Systems Center, and was conducted within the Force Modernization and Employment Program of RAND Project AIR FORCE.

This report is part of the RAND tool series. RAND tools may include models, databases, calculators, computer code, GIS mapping tools, practitioner guidelines, web applications, and various toolkits. All RAND tools undergo rigorous peer review to ensure both high data standards and appropriate methodology in keeping with RAND's commitment to quality and objectivity.

This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit

RAND is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.