CRADLE: Combined RF/Acoustic Detection and Localization of Passive Tags

Rekhi, Angad; So, Ernest; Gural, Albert; Arbabian, Amin

doi:10.1109/tcsi.2021.3064990

Cited by 2 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Rekhi et al [80] propose CRADLE, which combines RF and acoustic localization for ranging of passive tags. The system consists of a reader and a tag.…”

Section: B Sound Based Localizationmentioning

confidence: 99%

Constrained Localization: A Survey

Savić¹,

Vilajosana

Watteyne³

2022

IEEE Access

View full text Add to dashboard Cite

Indoor localization techniques have been extensively studied in the last decade. The well-established technologies enable the development of Real-Time Location Systems (RTLS). A good body of publications emerged, with several survey papers that provide a deep analysis of the research advances. Existing survey papers focus on either a specific technique and technology or on a general overview of indoor localization research. However, there is a need for a use case-driven survey on both recent academic research and commercial trends, as well as a hands-on evaluation of commercial solutions. This work aims at helping researchers select the appropriate technology and technique suitable for developing low-cost, low-power localization system, capable of providing centimeter level accuracy. The article is both a survey on recent academic research and a hands-on evaluation of commercial solutions. We introduce a specific use case as a guiding application throughout this article: localizing low-cost low-power miniature wireless swarm robots. We define a taxonomy and classify academic research according to five criteria: Line of Sight (LoS) requirement, accuracy, update rate, battery life, cost. We discuss localization fundamentals, the different technologies and techniques, as well as recent commercial developments and trends. Besides the traditional taxonomy and survey, this article also presents a hands-on evaluation of popular commercial localization solutions based on Bluetooth Angle of Arrival (AoA) and Ultra-Wideband (UWB). We conclude this article by discussing the five most important open research challenges: lightweight filtering algorithms, zero infrastructure dependency, low-power operation, security, and standardization.

show abstract

“…Rekhi et al [80] propose CRADLE, which combines RF and acoustic localization for ranging of passive tags. The system consists of a reader and a tag.…”

Section: B Sound Based Localizationmentioning

confidence: 99%

Constrained Localization: A Survey

Savić¹,

Vilajosana

Watteyne³

2022

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Extensive research was conducted on acoustic localization systems [19][20][21]. As acoustic signals have a relative low propagation speed (343 m/s), centimeter positioning accuracy can be achieved based on ToF measurements without the need for high-resolution clocks and high-speed and hence power-hungry electronics [22][23][24][25][26][27][28][29]. Figure 2 depicts a typical hybrid RF-acoustic positioning set-up with at least three fixed nodes for 2D positioning and four for 3D positioning with a known position in the system which we call anchors, and also are referred to as beacons in the literature.…”

Section: Indoor Positioning Technologiesmentioning

confidence: 99%

“…A previous overview paper from Holm et al [38] bundles these first generation RF-acoustic positioning systems. The papers discussed in this work [22,[25][26][27][28][29]35,39] focus more on recent energy-efficient systems. Although the energy efficiency of wireless acoustic sensor nodes has significantly progressed by the developments in MEMS and CMUT microphones and low-energy computing, current hybrid RF-acoustic solutions have not achieved fully energy-neutral operation for longrange (>10 m), centimeter-accurate and multiple access operation, with RF communication as the main limiting factor to achieve this [40].…”

Section: Indoor Positioning Technologiesmentioning

confidence: 99%

“…A promising hybrid method makes use of the backscattering technology refined in RFID systems, and directly communicates the received acoustic signals back [41]. In [27], the acoustic signal coming from a CMUT transceiver is modulated around the carrier, making it vulnerable to self-interference and prohibiting multiple access when several mobile nodes are present. ToF 0.05 [31] TDoA 20 [32] TDoA 50 [33] TDoA 3 (100 µW) [34] TDoA <0.5 [24] ToF, TDoA <24 [24] AoA <400…”

Section: Indoor Positioning Technologiesmentioning

confidence: 99%

“…[22] ToF <1 (150 mW) [39] RSS, AoA <50 [25,26] ToF <0.2 (21.7 mW) [27] ToF <1 (passive) [28] ToF 13 (81 µW) [29] ToF 5 [35] TDoA <0.5 (26.4 mW) ( )…”

Section: Rf-acousticmentioning

confidence: 99%

See 2 more Smart Citations

Positioning Energy-Neutral Devices: Technological Status and Hybrid RF-Acoustic Experiments

et al. 2022

View full text Add to dashboard Cite

The digital transformation is exciting the uptake of Internet-of-Things technologies, and raises the questions surrounding our knowledge of the positions of many of these things. A review of indoor localization technologies summarized in this paper shows that with conventional RF-based techniques, a significant challenge exists in terms of achieving good accuracy with a low power consumption at the device side. We present hybrid RF-acoustic approaches as an interesting alternative: the slow propagation speed of sound allows for accurate distance measurements, while RF can easily provide synchronization, data, and power to the devices. We explain how the combination of adequate signaling realizing a late wake-up of the devices with backscattering could position energy-neutral devices. Experiments in a real-life testbed confirmed the potential 10 cm-accuracy based on RF-harvested energy. Nonetheless, these also expose open challenges to be resolved in order to achieve accurate 3D positioning.

show abstract

CRADLE: Combined RF/Acoustic Detection and Localization of Passive Tags

Cited by 2 publications

References 27 publications

Constrained Localization: A Survey

Constrained Localization: A Survey

Positioning Energy-Neutral Devices: Technological Status and Hybrid RF-Acoustic Experiments

Contact Info

Product

Resources

About