The present invention relates to a method for a rapid initial alignment of a slave inertial navigation system mounted on a rotorcraft. The method for the rapid initial alignment comprises: a step of performing pre-transfer alignment to estimate a non-alignment angle and time delay between a main inertial navigation system (MINS) and a slave inertial navigation system (SINS) on the basis of the speed and posture information delivered from the main inertial navigation system (MINS); a step of performing a mixed alignment in which the estimated non-alignment angle and the estimated time delay are applied to re-estimate the non-alignment angle and the time delay; and a step of removing a vibration frequency of a rotating wing using an adaptive notch filter during the performance of the pre-transfer alignment and the mixing alignment.

    회전익 항공기에 탑재되는 종속 관성항법장치의 급속 초기정렬 방법에 관한 것으로, 상기 급속 초기정렬 방법은, 주 관성항법장치(MINS)로부터 전달된 속도 및 자세정보를 근거로 주 관성항법장치(MINS)와 종속 관성항법장치(SINS)사이의 비정렬각 및 시간지연을 추정하는 사전전달정렬을 수행하는 단계, 상기 추정된 비정렬각 및 상기 추정된 시간지연을 적용하여 비정렬각과 시간지연을 재추정하는 혼합정렬을 수행하는 단계 및 상기 사전전달정렬과 상기 혼합정렬 수행하는 동안 적응 노치 필터를 이용하여 회전 날개의 진동 주파수를 제거하는 단계를 포함한다.


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    Title :

    RAPID INITIAL ALIGNMENT METHOD OF SLAVE INERTIAL NAVIGATION SYSTEM MOUNTED ON ROTORCRAFT


    Additional title:

    회전익 항공기에 탑재되는 종속 관성항법장치의 급속 초기정렬 방법


    Contributors:
    LEE HYUNGSUB (author) / HAN KYUNGJUN (author) / LEE SANGWOO (author) / YU MYEONGJONG (author)

    Publication date :

    2019-06-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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    Morimoto, T. / Ohtsu, K. / International Federation of Automatic Control | British Library Conference Proceedings | 1999


    Fast initial alignment method of inertial navigation system on stationary base

    Jiancheng, F. / Shiping, Z. / Gongxun, S. | British Library Online Contents | 1999