Wireless network-to-network localization for measuring the spatial position and orientation of vehicles

2012 IEEE/MTT-S International Microwave Symposium Digest

Vossiek

2012

This paper reports on an innovative cooperative wireless localization network layout and the design of its network nodes. Each node consists of a 24 GHz FMCW secondary radar for bilateral range measurements between all nodes. Network synchronization and scheduling is based on IEEE 802.15.4 radio units. A novel concept to distributedly pre-synchronize all network nodes with an error of less than 125 ns was implemented and combined with the 24 GHz local positioning radar. With prototypes of the sensor nodes a ranging precision of about 1 cm is demonstrated experimentally.

Section: As Visible Inmentioning

confidence: 99%

Wireless sensor network with 24 GHz local positioning transceiver

2012 IEEE/MTT-S International Microwave Symposium Digest

Vossiek

2012

“…The network node consists of three parts: a 24 GHz RF front-end with VCO+PLL for ramp generation, a 2.4 GHz radio and a DSP board. The overall localization process can be summarized as follows: 1) Distributed clock pre-synchronization of participating nodes based on [3] and IEEE 802.15.4 standard 2) Fine synchronization as described in [2] 3) Distance measurement based on FMCW radar principle 4) Localization using distributed localization algorithm [4] The fine-synchronization and ranging procedure relies on the evaluation of a mixing signal of frequencymodulated ramps and successive compensation of time and frequency offsets. An IEEE 802.15.4 based network synchronization procedure was implemented to ensure that the remotely transmitted and the local frequency ramps sufficiently overlap in time.…”

Section: System Conceptmentioning

confidence: 99%

24 GHz CMOS transceiver with novel T/R switching concept for indoor localization

Hamidian

2013 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)

et al. 2013

This paper presents a 130 nm CMOS transceiver for 24 GHz wireless indoor localization. Due to a novel Rx/Tx switching concept RF-losses between receiver/ transmitter and antenna could be reduced and the T/R isolation was drastically improved. The measured transceiver chip achieves an output power and noise figure of >5 dBm and <6 dB, respectively with 2 mm 2 total chip size. The complete transceiver consumes 16 mW in the Rx-and 26 mW in the Tx-mode. The RF-transceiver-chip was integrated with a DSP-unit and mounted on a PCB for wireless indoor localization demonstration. The measured results show a distance measurement precision in the cm-range.

“…2). The node executes the following high-level steps to perform the localization: 1) distributed clock pre-synchronization of participating nodes based on [16] and the IEEE 802.15.4 standard; 2) fine synchronization, as described in [5]; 3) distance measurement based on the FMCW radar principle; 4) localization using a distributed localization algorithm [14]. In general, fine-synchronization and ranging is based on the evaluation of the mixing signal of local and received frequency-modulated ramps.…”

Section: System Design and Transceiver Architecturementioning

confidence: 99%

“…For this process, the distributed multidimensional scaling algorithm (dwMDS) [14] has been implemented and extended by model-based dynamic estimators to make it more robust. After a new set of node positions has been calculated, this information is sent to all communication partners via the 2.4-GHz interface.…”

Section: Distributed Localizationmentioning

confidence: 99%

See 1 more Smart Citation

Cooperative Indoor Localization Using 24-GHz CMOS Radar Transceivers

Hamidian

IEEE Trans. Microwave Theory Techn.

et al. 2014

This paper presents the first truly wireless 24-GHz round-trip time-of-flight local positioning frontend with an integrated CMOS transceiver. The transceiver in 130-nm CMOS technology features a novel receiver/transceiver switching concept, which reduces RF losses between the receiver/transmitter and antenna and drastically improves the transmit/receive isolation. The low-power RF transceiver chip was integrated with a digital signal-processing unit and mounted on a circuit board to form a system-level demonstrator of a secondary radar node incorporating synchronization and a distributed localization algorithm. The performance of the self-organizing localization network is evaluated in an indoor setup using comparisons with reference trajectories. Experimental results show a distance precision between the active nodes close to the theoretical optimum that can be achieved with the used signal parameters, as well as an absolute localization error in the centimeter range.