Vibration error compensation algorithm in the development of laser interference absolute gravimeters

Abstract. Measurement error arising from vibration interference is recognized as the primary obstacle limiting accuracy and stability of laser absolute gravimeters. The present work addresses this issue by proposing a global search optimization algorithm that determines optimal value gravity based on measured time–displacement coordinates falling body signal obtained passive isolation system inertial reference corner cube in gravimeter. Results numerical calculations conducted under conditions with added white noise resulting signal-to-noise ratio 40 dB demonstrate following. standard deviation gravimeter using proposed are ?0.04 µGal (1µGal=1×10-8 m s?2) 0.24 µGal, respectively, while those values least-squares solution 10.19 154.11 respectively. test results indicate average response acceleration due to superimposed disturbance 1.00 1.01 0.87 solution.