Northrop Grumman providing inertial reference system for NASA mission

  • 04-Jan-2010 08:57 EST
gpm_deployed.jpg

The GPM Core Observatory satellite will be pointing toward Earth to measure precipitation. It will be vital to control the attitude of the Core spacecraft accurately, so the resulting data can be mapped exactly where it originates on Earth.

Northrop Grumman was selected to supply a Scalable Space Inertial Reference Unit (Scalable SIRU) for NASA's Global Precipitation Measurement (GPM) Mission. The Scalable SIRU is an inertial reference system that supplies critical rotation rate data that enables the stabilization, pointing, and attitude control of satellites and space vehicles. For the GPM mission, the Scalable SIRU will be installed on the GPM Core Observatory satellite. The satellite-based GPM mission will study global precipitation from space, allowing regional and global scale precipitation measurement, which cannot be easily collected from the ground. The Core Observatory, which will serve as the reference standard for precipitation estimates from other GPM constellation spacecraft, is scheduled to launch on July 21, 2013.

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