Title:
水晶発振器の加速度感度を測定する方法およびシステム
Document Type and Number:
Japanese Patent JP7190063
Kind Code:
B2
Abstract:
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.
Inventors:
Mark Isakovich Zojishski
Vladimir Victorovich Berograzov
Danila Svyatoslavovich Milutin
Romantic Valerie Vich Klinin
Vadim Borisovic Kuzmitchev
Sergei Victorovich Logachikov
Vladimir Victorovich Berograzov
Danila Svyatoslavovich Milutin
Romantic Valerie Vich Klinin
Vadim Borisovic Kuzmitchev
Sergei Victorovich Logachikov
Application Number:
JP2021558605A
Publication Date:
December 14, 2022
Filing Date:
March 29, 2019
Export Citation:
Assignee:
Topcon Positioning Systems, Inc.
International Classes:
G01H17/00; G01P15/18; G01P21/00; G01R23/10
Domestic Patent References:
| JP2014138413A |
Foreign References:
| US20170261618 | ||||
| US20100199744 |
Other References:
Morley, P.E. ,Method for Measurement of the Sensitivity of Crystal Resonators to Repetitive Stimuli,2002 IEEE International Frequency Control Symposium and PDA Exhibition,2002年
Attorney, Agent or Firm:
Naoki Maekawa