CCSDS telemetry systems experience at the Goddard Space Flight Center

The Goddard Space Flight Center (GSFC) designs, builds, manages, and operates science and applications spacecraft in near-Earth orbit, and provides data capture, data processing, and flight control services for these spacecraft. In addition, GSFC has the responsibility of providing space-ground and ground-ground communications for near-earth orbiting spacecraft, including those of the manned spaceflight programs. The goal of reducing both the developmental and operating costs of the end-to-end information system has led the GSFC to support and participate in the standardization activities of the Consultative Committee for Space Data Systems (CCSDS), including those for packet telemetry. The environment in which such systems function is described, and the Center´s experience with CCSDS packet telemetry in the context of the Gamma Ray Observatory Project is discussed.<>