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Kafe 바로가기주관연구기관 | 인하대학교 InHa University |
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연구책임자 | 유창경 |
보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 | 한국어 |
발행년월 | 2016-07 |
과제시작연도 | 2015 |
주관부처 | 미래창조과학부 Ministry of Science, ICT and Future Planning |
등록번호 | TRKO201800007095 |
과제고유번호 | 1711026229 |
사업명 | 우주핵심기술개발사업 |
DB 구축일자 | 2018-05-19 |
키워드 | 위성항법.천측항법.달탐사.별센서.행성탐사.Satellite navigation.Celestial navigation.Lunar exploration.Star trackers.Planetary exploration. |
- 위성의 자세센서를 이용한 천측항법 알고리듬 개발
- 알고리듬 성능 향상을 위한 필터 설계
- 별센서 시험장치 구성
- 영상기반 영상센서 알고리듬 개발
- 영상기반 영상센서 시험장치 구성
- 시험장치 정확도 향상을 위한 영상 왜곡 보정 알고리듬 개발
- 시험장치 통합 항법시뮬레이션 수행
(출처 : 보고서 요약서 3p)
Purpose & Contents
Exact positioning in orbit of a satellite is the key issue for successful exploration of lunar or other planets. Since the GPS information is not available in lunar or planetary orbits, the earth-based satellite tracking system is currently used for the purpose of the navigatio
Purpose & Contents
Exact positioning in orbit of a satellite is the key issue for successful exploration of lunar or other planets. Since the GPS information is not available in lunar or planetary orbits, the earth-based satellite tracking system is currently used for the purpose of the navigation of satellites in other planets. However, this system not only requires heavy cost, but also suffers from communication problems due to far distance from earth to satellite. In this research, an autonomous navigation method for satellites using the dual-conical scan sensors and star trackers, which are typical on-board attitude sensors, is addressed. A test-bed for verifying the proposed autonomous navigation algorithm and for identifying implementation requirements are studied also.
The autonomous navigation system to be studied in this project is based on the principle of the ancient celestial navigation in which the position of an object on the earth surface can be determined by using the different direction angles of three stars to the zenith. According to this principle, we need to know the direction of the zenith and the altitude of the satellite. This information can be provided by a dual-conical scan sensor. And the directions of stars to the zenith can be determined by star trackers. Those sensors are standard equipment for precision attitude determination of satellites. The autonomous satellite navigation system and the test-bed set-up will be studied for five years as following schedule.
① The 1st year: Idea development of autonomous satellite navigation
- Determination of altitude and local level using the dual-conical scan sensor
- Precision attitude determination using star trackers
- Autonomous stellite navigation algorithm
- Modeling of celestial bodies
- Construction of test-bed
② The 2nd year: Autonomous navigation system for earth LEO satellites
- Analysis of navigation error characteristics due to sensor errors
- Modelling of (infrared) earth ellipsoid
- Development of autonomous navigation of earth LEO satellites and demonstration
③ The 3rd year: Autonomous navigation system for lunar satellites
- Modelling of (infrared) moon
- Development of autonomous navigation of lunar satellites and demonstration
- Optimal sensor suite and specification
Results
The autonomous in-orbit navigation algorithm with the star trackers and planet image sensors which are standard equipments of a satellite is developed. The the test-bed for verifying autonomous satellite navigation algorithm is developed also. The test-bed includes two star trackers, a planet image sensor, and a control computer. Proposed navigation algorithm is validated not only earth orbit but also the lunar orbit via full nonlinear 6-DOF simulations and experiments by the test-bed.
Expected Contribution
The proposed autonomous navigation system for earth and moon satellite is very cost effective because no other equipments for implement the algorithm is required. Since the proposed system has never been studied, the related techniques will contribute to development of the domestic satellite industry by issuing patent and transferring core technology to space sensor companies.
(출처 : SUMMARY 5p)
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총연구비 (DetailSeriesProject) : | - |
키워드(keyword) : | - |
과제수행기간(LeadAgency) : | - |
연구목표(Goal) : | - |
연구내용(Abstract) : | - |
기대효과(Effect) : | - |
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