과수원 환경에서 자율주행로봇을 위한 경로 연속성 기반 GPS오정보 필터링 연구
GPS Error Filtering using Continuity of Path for Autonomous Mobile Robot in Orchard Environment
- 발행
- 2024 등록KCI API에는 발행일 항목이 없어 원문 등록일을 쓰고 있습니다. 실측으로 발행보다 최대 6년 늦습니다 — 재수집하면 발행연월로 바뀝니다.
- 소속·발행
- 서울과학기술대학교
- 출처
- 국내 KCI
- DOI
- 10.7746/jkros.2024.19.1.023
- 원문
- 원문 보기 ↗
개념
키워드
Agricultural Automation, Path Planning, GPS Error Filtering, Continuity of Path, Agricultural Automation, Path Planning, GPS Error Filtering, Continuity of Path
초록
This paper studies a GPS error filtering method that takes into account the continuity of the ongoing path to enhance the safety of autonomous agricultural mobile robots. Real-Time Kinematic Global Positioning System (RTK-GPS) is increasingly utilized for robot position evaluation in outdoor environments due to its significantly higher reliability compared to conventional GPS systems. However, in orchard environments, the robot's current position obtained from RTK-GPS information can become unstable due to unknown disturbances like orchard canopies. This problem can potentially lead to navigation errors and path deviations during the robot's movement. These issues can be resolved by filtering out GPS information that deviates from the continuity of the waypoints traversed, based on the robot's assessment of its current path. The contributions of this paper is as follows. 1) The method based on the previous waypoints of the traveled path to determine the current position and trajectory. 2) GPS filtering method based on deviations from the determined path. 3) Finally, verification of the navigation errors between the method applying the error filter and the method not applying the er