Accession Number : AD0847522

Title :   Using the Geodimeter to Measure the Refraction Correction by Dispersion.

Descriptive Note : Final technical rept. on Task 1,

Corporate Author : INSTITUTE FOR TELECOMMUNICATION SCIENCES BOULDER CO

Personal Author(s) : Wood, L. E. ; Thompson, M. C., Jr

Report Date : 31 OCT 1968

Pagination or Media Count : 69

Abstract : Accurate measurement of long baselines by optical methods requires a correction for the refractive index of the path. The atmosphere is dispersive to light in the visible spectrum and the effect may be useful for determining the refraction correction in distance measurements. This research investigates the feasibility of using the Geodimeter to measure dispersion with sufficient accuracy to determine refractive index to 1 ppm. (Author)

Descriptors :   (*ATMOSPHERES, LIGHT TRANSMISSION), (*DISTANCE MEASURING EQUIPMENT, REFRACTIVE INDEX), SCATTERING, MEASUREMENT, CORRECTIONS, REFRACTION, OPTICAL INSTRUMENTS, INTENSITY, SENSITIVITY, EFFICIENCY, ACCURACY.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE