A Wireless Sensor Network with Radiolocation Subsystem

In this paper, the suitability of 5.8 GHz FMCW localisation schemes using chip-integrated radio transmitters is shown for the application of wireless sensor networks and one possible implementation is proposed. The synthesizer concept is based on a fractional-n PLL and was partly realized in an integrated circuit within the RESOLUTION EC-funded project. The basics of FMCW-TDOA radiolocation are described and the most important principles and parameters are described. Furthermore, the advantages of an active radiolocation system in combination with wireless data connectivity are outlined. The proposed system hence consists of the RESOLUTION chip in combination with a ZigBee meshed wireless network interface.