TY - GEN
T1 - DPSD algorithm for AC magnetic tracking system
AU - Liu, Yue
AU - Wang, Yongtian
AU - Yan, Dayuan
AU - Zhou, Ya
PY - 2004
Y1 - 2004
N2 - 6 DOF (degree-of-freedom) tracking system is one of the key device to realize the sense of immersion and human computer interaction in a VR or AR (Virtual or Augmented Reality) system. This paper presents the design of an AC magnetic tracking system and a DPSD (digital phase sensitive detector) algorithm to extract the received signals. The proposed magnetic tracking system is composed of 3-axis orthogonal magnetic sensor, 3-axis orthogonal magnetic transmitter, 2-axis accelerometers, data acquisition and processing system etc. After obtaining the orientation of the receiver by measuring the earth magnetic and gravity field with the DC output of magnetic sensors and accelerometers, the position of the receiver can be calculated from the received AC magnetic field generated by the magnetic transmitter. The performance of the existing DPSD algorithm when being used to extract the received AM (amplitude modulation) signals is studied and a new DPSD algorithm as well as its performance are presented. Experimental results show that the proposed algorithm can be used to measure the AM signal embedded in background noise and the feasibility of its application in the AC magnetic tracking system.
AB - 6 DOF (degree-of-freedom) tracking system is one of the key device to realize the sense of immersion and human computer interaction in a VR or AR (Virtual or Augmented Reality) system. This paper presents the design of an AC magnetic tracking system and a DPSD (digital phase sensitive detector) algorithm to extract the received signals. The proposed magnetic tracking system is composed of 3-axis orthogonal magnetic sensor, 3-axis orthogonal magnetic transmitter, 2-axis accelerometers, data acquisition and processing system etc. After obtaining the orientation of the receiver by measuring the earth magnetic and gravity field with the DC output of magnetic sensors and accelerometers, the position of the receiver can be calculated from the received AC magnetic field generated by the magnetic transmitter. The performance of the existing DPSD algorithm when being used to extract the received AM (amplitude modulation) signals is studied and a new DPSD algorithm as well as its performance are presented. Experimental results show that the proposed algorithm can be used to measure the AM signal embedded in background noise and the feasibility of its application in the AC magnetic tracking system.
KW - 6 DOF tracking
KW - Digital phase sensitive detector
KW - Human computer interaction
KW - Virtual and augmented reality
UR - http://www.scopus.com/inward/record.url?scp=15844395228&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:15844395228
SN - 0780383397
T3 - 2004 IEEE Symposium on Virtual Environments, Human-Computer Interfaces and Measurement Systems, VECIMS
SP - 101
EP - 106
BT - 2004 IEEE Symposium on Virtual Environments, Human-Computer Interfaces and Measurement Systems, VECIMS
T2 - 2004 IEEE Symposium on Virtual Environments, Human-Computer Interfaces and Measurement Systems, VECIMS
Y2 - 12 July 2004 through 14 July 2004
ER -