Spherical Harmonic Analyses for the Spheroidal Earth, II.

by Anne B. Kahle, J. W. Kern, Ernest H. Vestine

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A spheroid approximates the earth more accurately than does a sphere. Before analyzing the data over the surface of the earth by spherical harmonic series, they must be corrected to the appropriate values on a true sphere. The change in the earth's radius and latitude, and in the direction of the vector components must be considered. The corrections have been applied to values derived from existing analyses of the earth's magnetic field.

This report is part of the RAND Corporation Research memorandum series. The Research Memorandum was a product of the RAND Corporation from 1948 to 1973 that represented working papers meant to report current results of RAND research to appropriate audiences.

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