Early results of the ionospheric experiment of the Apollo-Soyuz Test ProjectA description is presented of a spacecraft-to-spacecraft Doppler-tracking experiment which was performed by the Smithsonian Astrophysical Observatory on the occasion of the Apollo-Soyuz Test Project (ASTP). The experiment involved the measurement of the relative velocity between the ASTP docking module and the Apollo command service module by a Doppler-tracking method. The objectives of the ionospheric experiment include the measurement of the time changes of the columnar electron content between the two spacecraft. The obtained data can provide a basis for the determination of the horizontal gradients of electron density at the height of 220 km.
Document ID
19770047651
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Grossi, M. D. (Smithsonian Astrophysical Observatory Cambridge, MA, United States)
Gay, R. H. (Smithsonian Astrophysical Observatory Cambridge, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1976
Subject Category
Geophysics
Meeting Information
Meeting: Symposium on The geophysical use of satellite beacon observations