상세정보
학술지
Performance Enhancement of Low-Cost Land Navigation System for Location-Based Service
- 발행일
- 200604
- 출처
- ETRI Journal, v.28 no.2, pp.131-144
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 05MD2300, 고정밀 Seamless 측위 기술개발(고정밀 Positioning 부품 개발), 최완식
- 초록
- This work demonstrates a dead-reckoning (DR) scheme for a low-cost land navigation system and a DR/GPS system design using the sigma point Kalman filter (SPKF). Through an observability analysis and some simulations, it is shown that the performances of a stand-alone DR system and DR/GPS system can be improved by employing the proposed DR scheme and SPKF. By using the designed DR scheme and filter, the stand-alone DR system does not have any undetectable errors occurring on the curve trajectory. And the DR/GPS system can provide a stable and seamless navigational solution even in the case where the initial heading estimation error is large, such as 160 degrees, or when the GPS signal is unavailable due to tunnels, buildings, and so on. Simulation results indicate a satisfactory performance of the proposed system.
- KSP 제안 키워드
- Dead reckoning, GPS signal, GPS system, Location-Based Services, Low-cost, Observability Analysis, Stand-Alone, estimation error, heading estimation, navigation system, performance enhancement