Background and Purpose:
This specification defines the Level 3, system-level functional and performance requirements for NASA’s Global Precipitation Measurement (GPM) mission Ground Validation System Mobile Radar (GVSMR).

Document Scope:
This document sets forth requirements for NASA’s GPM GVSMR including necessary ground validation measurement, data ingest, processing, archiving, and distribution.
The structure and functional breakdown of this document are used to organize the requirements only, and should not be interpreted as a physical architecture or allocation. Physical attributes and implementation approaches of the GVSMR are intentionally omitted from this document.
The GVS requirements presented in this document are traceable to the NASA GPM Level 2 Requirements.