  Measuring in a single location on Earth its angular rotation rate with
respect to the celestial frame, with a sensitivity enabling access to the tiny
Lense-Thirring effect is an extremely challenging task. GINGERINO is a large
frame ring laser gyroscope, operating free running and unattended inside the
underground laboratory of the Gran Sasso, Italy. The main geodetic signals,
i.e., Annual and Chandler wobbles, daily polar motion and Length of the Day,
are recovered from GINGERINO data using standard linear regression methods,
demonstrating a sensitivity better than 1 prad/s, therefore close to the
requirements for an Earth-based Lense-Thirring test.
