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| Content Provider | IET Digital Library |
|---|---|
| Author | Jo, Chanwoong Lee, Chaewoo |
| Abstract | Most of the range-free localisation techniques compute the position of a node through multilateration based on distances between nodes. The least squares estimation (LSE) based multilateration is used to determine the position of a node – which is optimal estimation method if all the variances of distance errors are equal. In range-free localisation, the distances to the anchors are usually estimated by multiplying the hop count and the hop length. Since the estimated hop length is error prone, the distance estimation error and the error variance usually increase as the hop count increases. If the conventional multilateration algorithm, which gives the same weights to the estimated distances, is applied as it is, suboptimal result will be achieved because the variances of the distance estimation errors cannot be equal. In this Letter, we analyse the reliability of estimated distance and propose a novel LSE based multilateration which considers the reliability of estimated distance. Simulation results show that the proposed method improves performance compared with the existing methods. |
| Starting Page | 1078 |
| Ending Page | 1080 |
| Page Count | 3 |
| ISSN | 00135194 |
| Volume Number | 52 |
| e-ISSN | 1350911X |
| Issue Number | Issue 12, Jun (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/52/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2016.0226 |
| Journal | Electronics Letters |
| Publisher Date | 2016-05-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Distance Error Variances Distance Estimation Error Estimated Distance Reliability Estimation Theory Hop Count Estimation Hop Length Estimation Interpolation And Function Approximation Least Squares Approximation Least Squares Estimation LSE Based Multilateration Method Numerical Analysis Optimal Estimation Method Range-free Localisation Technique Signal Processing Signal Processing And Detection Signal Processing Theory Statistics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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