I. Ciufolini et al., MEASUREMENT OF DRAGGING, OF INERTIAL FRAMES AND GRAVITOMAGNETIC FIELDUSING LASER-RANGED SATELLITES, Nuovo cimento della Società Italiana di Fisica. A. Nuclei, particles and fields, 109(5), 1996, pp. 575-590
By analysing the observations of the orbits of the laser-ranged satell
ites LAGEOS and LAGEOS II, using the program GEODYN, we have obtained
the first direct measurement of the Lense-Thirring effect, or dragging
of inertial frames, and the first direct experimental evidence for th
e gravitomagnetic field. The accuracy of our measurement is of about 3
0%.