Gnome

Liu, Xiaochen; Nath, Suman; Govindan, Ramesh

doi:10.1145/3210240.3210343

Cited by 18 publications

(4 citation statements)

References 30 publications

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“…GPS and wireless positioning. Recent efforts [29,32,38] have attempted to improve the performance of GPS positioning. CO-GPS [29] designs a cloud-offloaded GPS solution to save energy for portable sensing devices.…”

Section: Related Workmentioning

confidence: 99%

“…CO-GPS [29] designs a cloud-offloaded GPS solution to save energy for portable sensing devices. GNOME [32] proposes a novel vision-assisted algorithm leveraging Google Street View for accurate GPS positioning in urban canyons. COIN-GPS [38] develops a robust GPS receiver with a purposebuilt directional antenna to achieve indoor GPS positioning.…”

Section: Related Workmentioning

confidence: 99%

“…Global Position System (GPS) has long been advocated as an indispensable infrastructure for many location-based services, including navigation for automobile [32,35], pedestrian [34], ride-sharing [9], as well asset tracking for smart factories [2]. GPS receivers generally perform well in clear line-of-sight (LoS) regions with a sufficient number of visible GPS satellites.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

GPSMirror: Expanding Accurate GPS Positioning to Shadowed and Indoor Regions with Backscatter

Dong

Xie

Zhang

et al. 2023

Proceedings of the 29th Annual International Conference on Mobile Computing and Networking

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Despite the prevalence of GPS services, it still suffers from intermittent positioning with poor accuracy in partially shadowed regions like urban canyons, flyover shadows, and factories' indoor areas. Existing wisdom relies on hardware modifications of GPS receivers or power-hungry infrastructures requiring continuous plug-in power supply which is hard to provide in outdoor regions and some factories. This paper fills the gap with GPSMirror, the first GPS-strengthening system that works for unmodified smartphones with the assistance of newly-designed GPS backscatter. The key enabling techniques in GPSMirror include: (i) a careful hardware design with 𝜇𝑊 -level power consumption that pushes the limit of backscatter sensitivity to re-radiate extremely weak GPS signals with enough coverage approaching the regulation limit; and (ii) a novel GPS positioning algorithms achieving meter-level accuracy in shadowed regions as well as expanding locatable regions under inadequate satellites where conventional algorithms fail. We build a prototype of the GPSMirror tags and conduct comprehensive experiments to evaluate it. Our results show that a GPSMirror tag can provide coverage up to 27.7 m. GPSMirror achieves median positioning accuracy of 3.7 m and 4.6 m in indoor and urban canyon environments respectively. CCS CONCEPTS• Information systems → Global positioning systems;• Hardware → Networking hardware.

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Section: Related Workmentioning

confidence: 99%

Section: Related Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

GPSMirror: Expanding Accurate GPS Positioning to Shadowed and Indoor Regions with Backscatter

Dong

Xie

Zhang

et al. 2023

Proceedings of the 29th Annual International Conference on Mobile Computing and Networking

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“…Researchers have attempted to decrease the computational load by using an enhanced skymask: skymask 3DMA GNSS determines the reflection point by considering the azimuth angle of the reflecting planes instead of propagating the transmission path over different building surfaces, as in ray-tracing 3DMA GNSS. Moreover, in the Gnome approach, the heavy computational load processes were performed through a cloud-based framework, and the pre-computed information was stored in the device for real-time usage (Liu et al, 2018). Another study accelerated the ray-tracing GNSS method for prac-tical implementation (Ziedan, 2017).…”

mentioning

confidence: 99%

Multi-Epoch Kriging-Based 3D Mapping-Aided GNSS and Doppler Measurement Fusion using Factor Graph Optimization

Ng,

Hsu,,

Zhang

2023

navi

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Navigation and positioning are integral activities in the current society, and global navigation satellite systems (GNSSs) are widely used to perform globally referenced positioning. However, the performance of GNSSs in urban positioning is often unsatisfactory. The poor performance occurs because a GNSS signal does not travel in a line-of-sight (LOS) route directly to the receiver in such scenarios but is reflected or attenuated over buildings and obstacles. Signal propagation errors, such as non-LOS (NLOS), multipath, and diffraction reception errors, for GNSS signals deteriorate the positioning performance (Groves, 2013a). Moreover, the reflected signal experiences an additional time delay and must travel further, leading to the generation of positioning errors exceeding 50 m. Nevertheless, GNSS methods must be implemented in locations with tall buildings to provide absolute coordinates in the global frame for location-based services (LBSs). Therefore,

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Intelligent Urban Positioning Using Smartphone-Based GNSS and Pedestrian Network

Weng,

Chen,

et al. 2024

IEEE Internet Things J.

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Gnome

Cited by 18 publications

References 30 publications

GPSMirror: Expanding Accurate GPS Positioning to Shadowed and Indoor Regions with Backscatter

GPSMirror: Expanding Accurate GPS Positioning to Shadowed and Indoor Regions with Backscatter

Multi-Epoch Kriging-Based 3D Mapping-Aided GNSS and Doppler Measurement Fusion using Factor Graph Optimization

Intelligent Urban Positioning Using Smartphone-Based GNSS and Pedestrian Network

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