Abstract
A novel distributed localization method based on radio interference (DRIPS) is proposed to reduce the complexity of existing localization methods for wireless sensor networks. The DRIPS utilizes two anchors to create an interference signal. Based on the Doppler effect produced by the movement of one transmitter, each sensor in a network can obtain the angle information with the mobile anchor through the Doppler shift measurement of locally received signal strength indication signal. Finally, each sensor utilizes multi-sets of the angle information and the location of the mobile anchor to estimate its optimal geographical location independently. The DRIPS only relies on radio transceivers without the use of extra measurement equipments, and the sensor node conducts localization in a completely distributed manner without information exchange or centralized processing. Simulation results show that the proposed method is effective and that the average localization error in a network will be less than 1 m when the measurement accuracy of Doppler shift is 1 Hz.
| Original language | English |
|---|---|
| Pages (from-to) | 48-52 |
| Number of pages | 5 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 43 |
| Issue number | 8 |
| State | Published - Aug 2009 |
Keywords
- Doppler effect
- Mobile anchor
- Radio interference
- Wireless sensor network