Accession Number : AD0652235

Title :   STUDIES FOR A GEODETIC LASER SYSTEM.

Descriptive Note : Final rept., 1 Jul 65-30 Apr 67,

Corporate Author : EG AND G INC BEDFORD MASS

Personal Author(s) : Ackerman,Sumner

Report Date : 01 MAY 1967

Pagination or Media Count : 28

Abstract : This report contains a brief summary of photoelectric (range) detection, photographic (direction) detection, and design studies made for a geodetic laser system. It appears feasible to measure the displacement between a ground-based (ruby) laser system and a satellite equipped with retrodirective reflector arrays (such as those on the Explorer and Geos satellites) to an accuracy of 2 arc-seconds in direction and less than 10 meters in range at slant ranges of over 2000 km, using essentially state-of-the-art equipment described herein and in the references. The probability of detection is expected to be greater than 90% without optical tracking, if the direction is known in advance to within approximately 2 arc-minutes and the range to within approximately 1 km. (Author)

Descriptors :   (*LASERS, *GEODESICS), SCIENTIFIC SATELLITES, MEASUREMENT, PHOTOGRAPHIC IMAGES, SURVEYING(GEOGRAPHIC), RANGE FINDING

Subject Categories : Geodesy

Distribution Statement : APPROVED FOR PUBLIC RELEASE