Outdoor Ranging and Positioning based on LoRa Modulation

Müller, Pascal; Stoll, Hannes; Sarperi, Luciano; Schüpbach, Christof

doi:10.1109/icl-gnss51451.2021.9452277

Cited by 8 publications

(5 citation statements)

References 4 publications

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“…Due to LoRa's characteristics of low power consumption, low cost, wide coverage, and large connection, many researchers have applied LoRa to location-based tasks which are not sensitive to time delay. Muller et al [19] has made statistics on the ranging error of the LoRa signal and pointed out that LoRa has the ranging capability within kilometers. A comprehensive characterization of the LoRa signal and an evaluation of its real location service is presented in reference [20].…”

Section: Lora Localizationmentioning

confidence: 99%

“…The above-mentioned localization techniques are based on LoRa sub-GHz development, and their positioning accuracy is limited due to the restricted signal bandwidth. In recent years, a series of localization techniques based on LoRa 2.4 GHz have been developed, which utilize high-precision TOF ranging to reduce outdoor positioning errors to below 5 m [19,39]. However, these LoRa 2.4 GHz-based localization techniques still struggle to overcome the interference caused by multipath effects.…”

Section: Lora Localizationmentioning

confidence: 99%

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LoRaWAPS: A Wide-Area Positioning System Based on LoRa Mesh

Li,

Xu,

Liu

et al. 2023

Applied Sciences

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The positioning task of the Internet of Things (IoT) for outdoor environments requires that the node devices meet the requirements of low power consumption, long endurance, and low cost and that the positioning system can achieve high-precision positioning and wide-area coverage. Considering that traditional IoT positioning technology cannot balance the cost, energy consumption, and positioning performance well, a Wide-Area Positioning System Based on Long Range Mesh (LoRaWAPS), which is a low-cost and low-power outdoor positioning system with multi-anchor wireless mesh networking and multi-dimensional data fusion, is designed in this paper. To meet the need for a positioning system, a low-power consumption and high-reliability LoRa Mesh protocol is proposed. Aiming at the problem that the accuracy of LoRa ranging is easily affected by the non-line-of-sight (NLOS) path propagation of signals, a distance estimation algorithm based on the fusion of time of flight (TOF) and received signal strength indicator (RSSI) multi-sampling data is proposed. Furthermore, a position estimation algorithm is designed to minimize the posteriori RSSI error for multi-anchor cooperative estimation scenarios. Furthermore, the prototype of LoRaWAPS is built and tested in the campus environment. The experimental results show that the proposed system can provide reliable location service with low power and low cost.

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Section: Lora Localizationmentioning

confidence: 99%

Section: Lora Localizationmentioning

confidence: 99%

LoRaWAPS: A Wide-Area Positioning System Based on LoRa Mesh

Li,

Xu,

Liu

et al. 2023

Applied Sciences

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“…In actual positioning, the error model is often more complicated. As an illustration, the variance of SX1280 meets [25]:…”

Section: Unbiased Estimator Of Multilateration Modelmentioning

confidence: 99%

The Analysis and Verification of Unbiased Estimator for Multilateral Positioning

Yang

Sun

Chen

et al. 2022

Signals

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The ranging error model is generally very complicated in actual ranging technologies. This paper gives an analysis of the biased distance substitution and proposes an unbiased multilateral positioning method to revise the biased substitution, making it an unbiased estimate of the squared distance. An unbiased estimate of the multilateral positioning formula is derived to solve the target node coordinates. Through simulation experiments, it is proved that the algorithm can improve the positioning accuracy, and the improvement is more obvious when the error variance is larger. Experiments using SX1280 also show that the ranging conforms to the biased error model, and the accuracy can be improved by using the unbiased estimator. When the actual experimental error standard deviation is 0.16 m, the accuracy can be improved by 0.15 m.

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“…This solution aims to enable deploying IoT devices for wildlife monitoring applications that are both highly energy-efficient and environmentally sustainable. Furthermore, the research conducted in [7,8] provided an exhaustive review of the deployment of LoRa across various Internet of Things (IoT) applications, including but not limited to personal tracking and supply chain monitoring, thereby accentuating its wide-ranging applicability. The study in [7] reveals that positioning built on LoRa ranging achieved a Distance Root Mean Square (DRMS) error measuring 30 m. Impressively, this error diminished to 5 m when tracking a mobile node, validating it as a practical technique for estimating outdoor positioning and tracing IoT devices without resorting to Global Navigation Satellite Systems (GNSS).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the research conducted in [7,8] provided an exhaustive review of the deployment of LoRa across various Internet of Things (IoT) applications, including but not limited to personal tracking and supply chain monitoring, thereby accentuating its wide-ranging applicability. The study in [7] reveals that positioning built on LoRa ranging achieved a Distance Root Mean Square (DRMS) error measuring 30 m. Impressively, this error diminished to 5 m when tracking a mobile node, validating it as a practical technique for estimating outdoor positioning and tracing IoT devices without resorting to Global Navigation Satellite Systems (GNSS). Furthermore, the study mentioned in [8] affirms that LoRa technology can be a viable substitute for localization in extensive indoor and outdoor environments.…”

Section: Introductionmentioning

confidence: 99%

Implementing interoperable multi-gateway LoRaWAN for efficient maritime tracking systems

Sagala,

Hutapea,

Sinaga

et al. 2024

Eureka: PE

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Determining the precise location of a ship navigating on a lake is of utmost importance for various logistical and safety reasons. However, this task can become particularly challenging when operating in regions with limited or no access to the Internet. Fortunately, advancements in technology, specifically the Internet of Things (IoT) utilizing Low Power Wide Area Network (LPWAN) technology, have offered a robust solution to address this issue. LPWAN technology enables long-range data transmission without being reliant on traditional internet connectivity. In the context of our research, a LoRaWAN end node is employed equipped with LGT92, along with three gateways sourced from two different vendors, to effectively track the real-time position of a ship. To gauge the effectiveness of our system, let’s conduct experiments and obtained significant results. One noteworthy finding was that the communication range between one of the gateways and the LoRaWAN end node extended to 2.5 kilometers when utilizing the RAK 7243 gateway. In contrast, the Dragino LG308 gateway impressively stretched this range to 5.7 kilometers. All three gateways to broaden the tracking coverage area and ensure comprehensive monitoring are strategically deployed. Our research's primary focus was tracking a ship's journey spanning 16 kilometers from Balige to Onanrunggu port. Throughout our experimentation, it is confirmed that the ship's precise coordinates, including latitude and longitude, were accurately transmitted from the end node on the ship to the designated gateway. This crucial position data was then seamlessly transmitted to the cloud. This real-time tracking capability proved invaluable, allowing for constant oversight and decision-making support during the ship's journey

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Outdoor Ranging and Positioning based on LoRa Modulation

Cited by 8 publications

References 4 publications

LoRaWAPS: A Wide-Area Positioning System Based on LoRa Mesh

LoRaWAPS: A Wide-Area Positioning System Based on LoRa Mesh

The Analysis and Verification of Unbiased Estimator for Multilateral Positioning

Implementing interoperable multi-gateway LoRaWAN for efficient maritime tracking systems

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