NSSDCA ID: 1965-089A-05
Mission Name: GEOS 1The onboard transponder, which operated on 2271 (receiver) and 1705 MHz (transmitter), and a conical antenna were the spacecraft components of the NASA Range and Range-Rate System for determining the range and the radial velocity of the spacecraft by making phase shift and Doppler measurements. The antenna, mounted on the earth-facing portion of the spacecraft, could receive and transmit data. Its beam width was 150 deg. Data received from this instrument by three FR ARR 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. During the operational life of the spacecraft, 954 data passes were obtained, 730 of which were considered successful. The command system failure on December 1, 1966, made measurements impossible after that date.
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 |