Name
Abstract | ||
|---|---|---|
A prerequisite for a position measurement system is knowledge of anchor positions. In this paper, a local anchor-positioning method based on rotational time-difference-of-arrival (TDOA) measurement and ordinal multidimensional scaling (MDS) is proposed. The calibrated anchor positions serve as basis points to construct the local coordinate system for subsequent target localization. During the calibration phase, each anchor acts as a transmitter in turn, and the TDOA of the signal at rest of the anchors is measured. Although the true interanchor ranges are unknown, we can infer their relative rank from their range differences. Ordinal MDS allows us to find a configuration of anchor positions that preserves the order of interanchor range measurement without involving the exact value of the true range. As the number of anchors increases, the solution space of ordinal MDS rapidly shrinks; hence, an accurate local map of anchors can be constructed. Our simulation shows that, when the number of anchors exceeds ten, ordinal-based MDS outperforms classical metric MDS, as it is more robust to range offset errors. |
Year | DOI | Venue |
|---|---|---|
2010 | 10.1109/TIM.2010.2047987 | IEEE T. Instrumentation and Measurement |
Keywords | Field | DocType |
distance measurement,anchor calibration,calibration,calibrated anchor positions,indoor position measurement system,tdoa measurement,offset errors,interanchor range measurement,transmitter,tdoa,multidimensional signal processing,ordinal mds,target localization,mds,direction-of-arrival estimation,anchor-positioning method,local anchor map,position measurement,time-of-arrival estimation,ordinal multidimensional scaling,local coordinate system,time-difference-of-arrival measurement,transmitters,wireless sensor networks,multidimensional scaling,time difference of arrival,global positioning system,measurement system,multidimensional systems,synchronization,coordinate system | Coordinate system,Multidimensional signal processing,System of measurement,Multidimensional scaling,Ordinal number,Electronic engineering,Multilateration,Offset (computer science),Mathematics,Multidimensional systems | Journal |
Volume | Issue | ISSN |
59 | 7 | 0018-9456 |
Citations | PageRank | References |
8 | 0.60 | 8 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yuan Zhou | 1 | 22 | 1.23 |
| Choi Look Law | 2 | 89 | 12.49 |
| Francois P. S. Chin | 3 | 330 | 47.00 |