Topcon Positioning Systems, Inc.

Vadim Borisovish Kuzmitchev

Mark Isaakovich Zhodzishsky

Vladimir Victorovich Beloglazov

Roman Valerievich Kurynin

Danila Svyatoslavovich Milyutin

Sergey Viktorovich Rogachkov

A method and system are provided for estimating the g-sensitivity of a quartz oscillator, which includes rotating the quartz oscillator successively around each of a plurality of axes constituting a full-rank system, measuring a frequency of the quartz oscillator at a predetermined rate as a function of time during rotation, and estimating an integral g-sensitivity vector while the quartz oscillator is rotated. Estimation can be performed utilizing a data fitting and estimation model, e.g., a Least Square Method (LSM) in one example, using the frequency measurements obtained while the quartz oscillator is in rotation around the axes. The method and system are especially useful for measuring g-sensitivity of quartz oscillators that are incorporated in high-precision systems, such as navigation receivers, which operate in environments that are subjected to vibrational effects and other mechanical forces.

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Moscow, Russia

Vadim Borisovish Kuzmitchev