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公开(公告)号：KR101355534B1
公开(公告)日：2014-01-27
申请号：KR1020120099864
申请日：2012-09-10
Applicant: 국방과학연구소
Abstract: The present invention relates to a system and a method for enhancing a dead zone in a fiber-optic gyroscope caused by the limited performance characteristics of optical elements composing a fiber-optic gyroscope and, more particularly, to a system and a method for enhancing a dead zone in a fiber-optic gyroscope by identifying direct optical elements with distorted optical phase modulation characteristics, selecting eligible direct optical elements through the identification, and controlling the output intensity of interference signals through an optical attenuator. The present invention can enhance a dead zone in a fiber-optic gyroscope caused by the limited performance characteristics of the optical elements composing the fiber-optic gyroscope by identifying the direct optical elements with the distorted optical phase modulation characteristics, selecting the eligible direct optical elements through the identification, and controlling the output of the interference signals through pump LD driving current and the optical attenuator. Thus, the present invention can control the characteristics of an optical part for removing the dead zone. [Reference numerals] (11) Optical fiber light source; (12) Light coupler; (13) Direct optical element; (14) Optical fiber ring; (15) Detector; (16) Closed circuit controller
Abstract translation: 本发明涉及由构成光纤陀螺仪的光学元件的有限性能特性引起的光纤陀螺仪中的死区增强的系统和方法，更具体地说，涉及一种系统和方法， 通过识别具有失真的光相位调制特性的直接光学元件，通过识别选择合格的直接光学元件，并通过光衰减器控制干扰信号的输出强度，从而在光纤陀螺仪中的死区。 本发明可以通过识别具有失真的光相位调制特性的直接光学元件来增强由构成光纤陀螺的光学元件的有限的性能特性引起的光纤陀螺仪中的死区，选择合格的直接光学元件 通过识别，并通过泵LD驱动电流和光衰减器控制干扰信号的输出。 因此，本发明可以控制用于去除死区的光学部件的特性。 （附图标记）（11）光纤光源; （12）光耦合器; （13）直接光学元件; （14）光纤环; （15）检测器 （16）闭路控制器
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公开(公告)号：KR101912696B1
公开(公告)日：2018-10-29
申请号：KR1020170023663
申请日：2017-02-22
Applicant: 국방과학연구소
IPC: G01C25/00
Abstract: 본발명은광섬유자이로스코프의적정주파수튜닝방법에관한것이다. 본발명에따른광섬유자이로스코프의적정주파수튜닝방법은, 광원, 광결합기, 집적광학소자, 광섬유고리및 광검출기를포함하는광섬유자이로스코프의적정주파수튜닝방법에있어서, (a) 상기광원에기 설정된전류를인가하고, 상기직접광학소자에파형발생기의출력을인가하는단계; (b) 상기광 검출기의출력신호로부터, 기본주파수의최소진폭에해당되는주파수를후보적정주파수로산출하는단계; (c) 상기후보적정주파수와기 설정된목표적정주파수와의차이에근거하여, 상기광섬유고리에대해절단할길이를산출하는단계; 및 (d) 상기후보적정주파수와상기목표적정주파수와의차이가기 설정된허용오차범위내가될 때까지, 상기광섬유고리의포트를상기산출한길이에근거하여절단한후 상기집적광학소자와다시연결한상태에서, 상기 (a) 내지 (c) 단계를반복하는단계;를포함한다.
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公开(公告)号：KR1020180097053A
公开(公告)日：2018-08-30
申请号：KR1020170023663
申请日：2017-02-22
Applicant: 국방과학연구소
IPC: G01C25/00
CPC classification number: G01C25/005 , G01C19/72
Abstract: 본발명은광섬유자이로스코프의적정주파수튜닝방법에관한것이다. 본발명에따른광섬유자이로스코프의적정주파수튜닝방법은, 광원, 광결합기, 집적광학소자, 광섬유고리및 광검출기를포함하는광섬유자이로스코프의적정주파수튜닝방법에있어서, (a) 상기광원에기 설정된전류를인가하고, 상기직접광학소자에파형발생기의출력을인가하는단계; (b) 상기광 검출기의출력신호로부터, 기본주파수의최소진폭에해당되는주파수를후보적정주파수로산출하는단계; (c) 상기후보적정주파수와기 설정된목표적정주파수와의차이에근거하여, 상기광섬유고리에대해절단할길이를산출하는단계; 및 (d) 상기후보적정주파수와상기목표적정주파수와의차이가기 설정된허용오차범위내가될 때까지, 상기광섬유고리의포트를상기산출한길이에근거하여절단한후 상기집적광학소자와다시연결한상태에서, 상기 (a) 내지 (c) 단계를반복하는단계;를포함한다.
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