Scenario-based Needs Analysis for a Remote Sensing Defense Mission

摘要

The first step in the space systems engineering process is to define and scope the mission objectives oriented by the stakeholder's needs. Sometimes the needs analysis effort can be underestimated; specifically regarding to space remote sensing defense missions, characterized by innumerous and in some cases, conflicting needs. The Systems Engineering Office (LSIS) from the Brazilian Institute for Space Research (INPE) proposes the Needs Analysis by Scenarios, flowing down from the operational scenario needs to the mission requirements. The scenario approach proposed, take into consideration three dimensions: 1. the key parameters for remote sensing missions; 2. the typical remote sensing defense missions: Surveillance and Reconnaissance; 3. the main defense targets and its sensing features. The proposed approach helps to maintain traceability from stakeholder needs to mission requirements, granting the objective delimitation of the mission scope. The knowledge base created represents a tool to support the trade-offs during the development process, allowing the identification of technical decision impacts in the stakeholders needs. The methodology and information developed allow the analysis for other remote sensing defense missions, independently of the solution.