Integrated tools and techniques applied to the TES ground data system

The Tropospheric Emission Spectrometer (TES) is a Fourier Transform Spectrometer (FTS) scheduled for launch in June of 2003. Over its six-year mission, it is expected to provide three-dimensional maps of ozone and its precursors as part of NASA´s Earth Observing System (EOS). Developing production-quality software to process large volumes of scientific data and accommodate changing requirements throughout the mission along with the need to ensure that scientific goals and objectives are met presents many challenges. The author of the paper will discuss the selection of CASE tools, a decision making process, requirements tracking and a review mechanism that leads to a highly integrated approach to software development that must deal with the constant pressure to change software requirements and design that is associated with research and development. This integrated approach of tools and techniques should provide a process and mechanism to assist in continually verifying that mission objectives are correctly expressed in software requirements and fully realized in design in order to achieve overall mission success of the ground data processing system