Accurate FMCW radar-based indoor localization system

Sorrentino, R.; Sbarra, Elisa; Urbani, Laura; Montori, Simone; Gatti, Roberto Vincenti; Marcaccioli, L.

doi:10.1109/rfid-ta.2012.6404547

Cited by 16 publications

(8 citation statements)

References 23 publications

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“…However, Witrack is built with a USRP device with high bandwidth and a specially designed T-shape antenna array, which limits the scale of its applications. Other radar-based systems have similar cost issues [43,44,45].…”

Section: Related Workmentioning

confidence: 99%

WallSense: Device-Free Indoor Localization Using Wall-Mounted UHF RFID Tags

Liu

Wang

et al. 2018

Sensors

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To achieve device-free indoor localization without the active participation of the users, this paper presents WallSense, a device-free indoor localization system based on off-the-shelf Radio RFID (Radio-Frequency Identification) equipment. The system deploys two orthogonal tag arrays in adjoining walls and uses the RSSI and phase information measured by RFID readers to localize the target. By differentiating the backscattered signal between adjacent tag pairs, WallSense is able to eliminate most undesirable factors and extract information directly related to the location of the target. By applying Particle Swarm Optimization (PSO) with a novel weighted fitness function and combining the localization result of two orthogonal tag arrays, the system is able to localize the target with high accuracy. Experiments show that the system is able to localize human target with 0.24 m median error. Also, WallSense has low deployment overhead and do not require the users to carry any devices.

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Section: Related Workmentioning

confidence: 99%

WallSense: Device-Free Indoor Localization Using Wall-Mounted UHF RFID Tags

Liu

Wang

et al. 2018

Sensors

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“…Accurate indoor localisation systems are highly needed by many applications such as automated vehicles, automotive industries, safe evacuation systems and warehouse management with demanding specifications on accuracy and precision. Frequency modulated continuous wave (FMCW) radar systems have been proven to be a good candidate for indoor localisation systems with a precision of a few tens of centimetres and ranging accuracy of a few centimetres for a range of a few metres [1, 2]. However, the accuracy of FMCW radar systems is degraded in indoor environments due to multi‐path interferences caused by static or moving scatterers.…”

Section: Introductionmentioning

confidence: 99%

“…To enhance the robustness of FMCW radar systems in indoor environments against multi‐paths, many techniques were adopted. The use of directive antennas was proposed in [1]. Another technique showed that the use of multi‐bands for ranging improves the robustness of FMCW radar systems against interferers [3, 4]; however; the added redundancy increases the cost and the processing time.…”

Section: Introductionmentioning

confidence: 99%

Design of a 24 GHz FMCW radar system based on sub‐harmonic generation

Agroudy

El-Shennawy

Joram

et al. 2018

IET Radar, Sonar & Navigation

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“…Some techniques were adopted to enhance the robustness of indoor FMCW radar systems like the use of directive antennas [1] or multi‐band ranging systems [2]. Directive antennas require certain placement of the base station and the reflectors, while multi‐band ranging is an added redundancy and processing.…”

Section: Introductionmentioning

confidence: 99%

“…Introduction: An accurate indoor localisation system is needed by many applications such as safe evacuation systems, indoor navigation and gaming, and warehouse management. Frequency-modulated continuous wave (FMCW) radar systems are able to reach a precision of a few tens of centimetres [1], which makes them good candidates for indoor localisation systems. However, in an indoor environment, multi-path interference caused by static or moving scatterers negatively affects the accuracy of FMCW radar systems.…”

mentioning

confidence: 99%

Design of a 24 GHz frequency divider‐by‐10 in 45 nm‐silicon‐on‐insulator as an active reflector tag

et al. 2017

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The design of a 24 GHz frequency divider-by-10 for accurate indoor localisation systems is presented. It is proposed to use frequency dividers as active reflector tags in a frequency-modulated continuous wave indoor localisation system in order to reduce interferences caused by direct reflections of the interrogating signal. Since frequency dividers are subharmonic generators, this allows achieving conversion gain in the reflected signal. The frequency divider is fabricated using GLOBAL FOUNDRIES 45 nm-silicon-on-insulator technology. It consumes only 5.7 mW from a 1 V supply. It has a wide locking range of 33% and an efficiency of 3.58 GHz/mW. To the best of authors' knowledge, the use of frequency dividers as active reflectors was not studied before.

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Accurate FMCW radar-based indoor localization system

Cited by 16 publications

References 23 publications

WallSense: Device-Free Indoor Localization Using Wall-Mounted UHF RFID Tags

WallSense: Device-Free Indoor Localization Using Wall-Mounted UHF RFID Tags

Design of a 24 GHz FMCW radar system based on sub‐harmonic generation

Design of a 24 GHz frequency divider‐by‐10 in 45 nm‐silicon‐on‐insulator as an active reflector tag

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