상세정보
학술대회
Clock Offsets in TDOA Localization
- 저자
- 성낙선, 박성욱
- 발행일
- 200610
- 출처
- International Symposium on Ubiquitous Computing Systems (UCS) 2006 (LNCS 4239), v.4239, pp.111-118
- 협약과제
- 06MD1500, RFID/USN용 센서 태그 및 센서 노드 기술 개발, 표철식
- 초록
- Time based TDOA localization systems require time or clock synchronization between receivers such as cellular base stations, satellites, and sensor nodes. Imperfection of time synchronization causes degradation in positioning accuracy. However if we know about its characteristics and how to estimate the clock offsets, the localization system can be properly calibrated to provide good quality of services. In this paper, hence, we present how to derive a localization error vector with independent clock offset, and illustrate its effect on the positioning errors, and then, provide a simple method of TDOA clock offset estimation from the observation of error vectors. © Springer-Verlag Berlin Heidelberg 2006.
- KSP 제안 키워드
- Cellular base, Clock Synchronization, Clock offset, Localization systems, Positioning Error, Positioning accuracy, Sensor node, Time Based, Time synchronization, base station(BS), localization error