Abstract
In this paper, a radar system for local positioning
applications is presented. The system consists of frequency modulated continuous-wave (FMCW) stations operating in W-band that are loosely coupled using time-delayed ramp start signals. A centralized signal
processing approach allows to relax the required synchronization accuracy between the stations and further leads to a cancellation of phase noise and phase distortions caused by imperfect FMCW ramps. All
stations are equipped with an antenna array and multiple receivers. Thus, a signal processing approach is developed in this work that combines the positive effects from the centralized processing with the information from the antenna array in a digital-beamforming based approach to improve the multipath robustness of the overall system. The developed theory is confirmed in measurements carried out with a prototype system consisting of two stations. Various measurements in multipath environments confirm the improved robustness leading to a worst-case root-mean-square position error of 15 mm under strong
multipath conditions which were simulated inside an anechoic chamber.
| Original language | English |
|---|---|
| Article number | 6384842 |
| Pages (from-to) | 676 -684 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 61 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2013 |
Fields of science
- 202019 High frequency engineering
- 202030 Communication engineering
- 202038 Telecommunications
- 202029 Microwave engineering
- 202033 Radar technology
JKU Focus areas
- Mechatronics and Information Processing