NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The role of time-frequency in satellite position determination systems.Tests were conducted by NASA on radio navigation satellite systems that employ the use of time-frequency determination. The satellites used for this purpose were the ATS 1 and 3, and the Nimbus 3 and 4. Several systems were tested in order to examine the feasibility of three satellite navigation concepts: (1) multiple satellite range measurements, (2) satellite range rate, or range and range rate measurements and (3) satellite angle measurements. Test results indicate that locations of ships and aircraft can be determined to within 3-5 km, one sigma, by these satellite methods, and that location accuracy is both a function of the RF employed and of the extent of knowledge of the satellite orbit.
Document ID
19720048405
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ehrlich, E.
(NASA Office of Space Science and Applications Washington, D.C., United States)
Date Acquired
August 6, 2013
Publication Date
May 1, 1972
Publication Information
Publication: IEEE
Subject Category
Communications
Accession Number
72A32071
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available