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Applications of PTTI to new techniques for determining crustal movements, polar motion, and the rotation of the earthNew extra-terrestrial techniques are discussed for geodesy and geodynamics include laser range measurements to the moon or to artificial satellites, Doppler measurements with the Transit satellite system, and both independent-clock and linked-antenna microwave interferometry. The ways in which PTTI measurements are used in these techniques will be reviewed, and the accuracies expected during the latter half of the 1970's will be discussed. At least 3 of the techniques appear capable of giving accuracies of 5 cm or better in each coordinate for many points on the earth's surface, and comparable accuracies for the earth's rotation and polar motion. For fixed stations or for sites a few hundred km apart, baseline lengths accurate to 1 cm may be achieved. Ways in which the complementary aspects of the different techniques can be exploited will be discussed, as well as how they tie in with improved ground techniques for determining crustal movements. Some recent results from the extra-terrestrial methods will be mentioned.
Document ID
19750019105
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bender, P. L. (Colorado Univ. Boulder, United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Publication Information
Publication: NASA. Goddard Space Flight Center Proc. of the Sixth Ann. Precise Time and Time Interval (PTTI) Planning Meeting
Subject Category
Geophysics
Accession Number
75N27177
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19750019101Collected WorksProceedings of the Sixth Annual Precise Time and Time Interval (PTTI) Planning Meeting
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