Accession Number : AD0459051


Title :   THE EARTH'S GRAVITY FIELD DEDUCED FROM THE DOPPLER TRACKING OF FIVE SATELLITES,


Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB


Personal Author(s) : Guier, W H ; Newton, R R


Report Date : Dec 1964


Pagination or Media Count : 38


Abstract : Using orbital determinations and data residuals from the Doppler tracking of five satellites, we deduce values for the zonal harmonics of odd degree through the ninth, the non-zonal harmonics of all degrees from the second through the eighth, and the sectorial harmonics of degree 13. Combining these with values given by King-Hele for the zonal harmonics of even degree, we compute a shape of the geoid and study the distribution of the magnitudes of the harmonics. We find that the harmonics of the geoid have no apparent relation with the harmonics of the topography. We also find that the harmonic coefficients of the geoid are consistent with random density variations, having negligible spatial correlation beyond about 0.01 Re, that begin near the top of the mantle and continue to an undertermined depth. (Author)


Descriptors :   *EARTH(PLANET) , GRAVITY , ARTIFICIAL SATELLITES , POLYNOMIALS , DOPPLER SYSTEMS , TRACKING , HARMONIC ANALYSIS , MEASUREMENT


Distribution Statement : APPROVED FOR PUBLIC RELEASE