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박찬주,이상정,Park, Chan-Ju,Lee, Sang-Jeong 한국군사과학기술학회 2007 한국군사과학기술학회지 Vol.10 No.1
This paper proposes SDINS(strapdown inertial navigation system) transfer alignment method for vertical launcher using an adaptive filter in the ship. First, the velocity and attitude matching transfer alignment method is designed to align SDINS for vertical launcher. Second, the adaptive filter is employed to estimate measurement noise variance in real time using the residual of measurements. Because it is difficult to decide measurement noise variance when noise properties of the ship SDINS are changed. To verify its performance, it is compared with the EKF(Extended Kalman filter) using uncorrect measurement variance. The monte carlo simulation results show that proposed method is more effective in estimating attitude angle than EKF.
유찬주 ( Yu Chan Ju ),정치형 ( Chi Hyoung Jeong ),김진헌 ( Jin Heon Kim ),이미나 ( Mi Na Lee ) 전북대학교 농업과학기술연구소 2022 농업생명과학연구 Vol.52 No.2
The purpose of this study is to analyze the actual condition of job demand in the agricultural and fishing villages in Buan-gun. For the actual condition analysis, the target companies were identified based on the administrative data of Buan-gun, and a field survey was conducted. According to the results of the study, there is demand for jobs, and simple labor jobs at the basic wage level were preferred. In order to vitalize these jobs, it was expected to establish governance by forming an intermediate support organization for jobs in agriculture, fishing, and rural areas, and then the local governments would actively participate in job support. Moreover, in order to vitalize jobs in Buan-gun, an intermediate support organization for jobs should be established to operate practical and hands-on programs for the manpower management between the demand and supply, and those who are looking for a job, develop direct dealing businesses and stay-type tourism products, create jobs through connecting with agricultural process field, and actively foster the operation body of the social agriculture and healing agriculture. In addition, new jobs should be created. In other words, it is possible to provide jobs of helping services for teenagers, elderly people, and children of foreign families, and create jobs related to various commentators, performance group, or playing culture. It is possible to create new jobs in the field of production, processing, distribution, and service of agricultural products by providing farmland through developing idle land and may create jobs such as farming start-up, distribution of agricultural products, agent of agricultural work (drone, agricultural work, agricultural machine work, etc.), using idle facilities in the region (facility house or common facility), hands-on and accommodation facilities, processing facilities, restaurants, or markets. In particular, it is hard for young people to secure initial investment for start-up company, so the intermediate support organization should provide information and support establishment of business plan linked with the government’s youth start-up support project.
박찬주,이상정,Park, Chan-Ju,Lee, Sang-Jeong 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.6
The ARS(Attitude Reference System) calculates an attitude of a vehicle using inertial angular rate sensors and acceleration sensors. The attitude error of ARS increases due to the integration of angular rate sensor output. To reduce the attitude error an acceleration of sensor is used similar to leveling method of INS(Inertial Navigation System). When an acceleration of vehicle is increased, it is difficult to calculate the attitude error using acceleration sensor output. In this paper the estimation method of acceleration due to the attitude error only is proposed. Two methods of the attitude calculation depending on vehicle dynamics and the integration method of these two methods are proposed. To verify its performance the monte carlo simulation is performed and shows that it bounds attitude error of ARS to reasonable level.