서지주요정보
음향 신호를 이용한 3차원 위치 추정 시스템의 개발 = 3D position sensing system based on acoustic signals
서명 / 저자 음향 신호를 이용한 3차원 위치 추정 시스템의 개발 = 3D position sensing system based on acoustic signals / 김흥기.
저자명 김흥기 ; Kim, Heung-Gi
발행사항 [대전 : 한국과학기술원, 2003].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014576

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 03079

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A 3D position estimating system based on acoustic signals is described. Although the method for position sensing based on acoustic signals, among many techniques, is characterized by low accuracy and short measurement range, still this is the most economical method in the case of not demanding highly precise measurements. Unlike the conventional ultrasound system, a 3D locator using audible sound is developed. This system is applicable to determine the coordinates of a sound receiver placed at an arbitrary position in a small-size room, especially an anechoic chamber. Low resolution in TOF (time-of-flight) estimation owing to the use of low frequency acoustic signals could be compensated by using phase information of the two signals between the transmitter and the receiver. Linear-phase-slope of cross-spectrum estimation is recommended to estimate TOF to reasonable accuracy for the system using wide band signals from a multi set of speakers. In 3D localization process, the linearized spherical equation can be implemented to incorporate various sets of TOF measurement to produce the unknown position of the target object in Cartesian coordinate. TOF estimation based on phase must be calibrated to obtain the correct distance between the transmitter and the receiver, which is varying with the speed of sound. Experiment results of the system performance in an anechoic chamber are presented.

서지기타정보

서지기타정보
청구기호 {MME 03079
형태사항 iii, 64 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Heung-Gi Kim
지도교수의 한글표기 : 박영진
지도교수의 영문표기 : Young-Jin Park
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 63-64
주제 3차원 위치 추정
3D position sensing
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