NSSDCA ID: 1968-002A-05
Mission Name: GEOS 2The Goddard Range and Range Rate (GRARR) System was capable of determining both the range and the rate of change of the range of the spacecraft by measuring phase shift and Doppler. The system, which operated on 2271 MHz (receiver) and 1705 MHz (transmitter), utilized an antenna mounted on the earth-facing portion of the spacecraft. The beam-width was 150 deg. Data received from this instrument by three GRARR S-band stations were used to augment other geodetic data and to provide a comparison of this system with others used in tracking the spacecraft. The data received were placed on paper tape and were reproduced by the CDC 160A computer on magnetic tape for further processing.
Questions and comments about this experiment can be directed to: Coordinated Request and User Support Office
Name | Role | Original Affiliation | |
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Mr. John H. Berbert | Principal Investigator | NASA Goddard Space Flight Center | jberbert@rattler.gsfc.nasa.gov |