A Study on In-Flight Alignment Using the Flight Distance of Vehicle

Yu, Hae-Sung

Journal of the Korea Institute of Military Science and Technology 2005;8(3):5-10.

Hae-Sung Yu

항체의 비행거리 정보를 이용한 운항 중 정렬 기법 연구

유해성

국방과학연구소

Abstract

This paper presents the new in-flight alignment method using the flight distance of vehicle in order to improve the performance of the heading error estimation. In the proposed method, the Kalman filter having the difference between GPS and SDINS position as measurements is used for levelling of SDINS and heading error is estimated utilizing the flight distance information. It is shown in the simulation results that the in-flight method proposed in this paper has the high accuracy in heading error estimation and the heading error can be very quickly estimated at the high speed vehicle, compared with the existing method using the Kalman filter.

Key Words: In-flight Alignment, Heading Error, SDINS