The Applied Physics Laboratory (APL) space research program was directed toward modeling the gravitational field of the earth from an analysis of the Doppler shifts on the transmitted frequencies of the satellites as obtained by the tracking stations. Emphasis is on the satellites involved and the methods used in accomplishing this aim.
National geodetic satellite program, part 1
1977-01-01
Miscellaneous
No indication
English
National geodetic satellite program, part 1
NTRS | 1977
|National geodetic satellite program, part 1
NTRS | 1977
|National geodetic satellite program, part 1
NTRS | 1977
|National Geodetic Satellite Program, Part II: Evaluation
NTRS | 1977
|