Multichannel target speed estimation by a colocated Doppler-pulse MIMO radar

Omelchuk, Igor; Прокопенко, Ігор; Chyrka, Iurii

doi:10.1109/ukrmico.2016.7739601

Cited by 13 publications

(3 citation statements)

References 5 publications

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“…Although LoRa technology is robust to a high degree against Doppler effect, it may still be possible to capture frequency deviations in the chirps due to Doppler effects and predict the speed of moving end nodes [22,38].…”

Section: Related Work and Conclusionmentioning

confidence: 99%

Known and Unknown Facts of LoRa

Liando

Gamage

Tengourtius

et al. 2019

ACM Trans. Sen. Netw.

280

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Long Range (LoRa) is a Low-power Wide-area Network technology designed for the Internet of Things. In recent years, it has gained significant momentum among industrial and research communities. Patented by Semtech, LoRa makes use of chirp spread spectrum modulation to deliver data with promises of long battery life, far-reaching communication distances, and a high node density at the cost of data rate. In this article, we conduct a series of experiments to verify the claims made by Semtech on LoRa technology. Our results show that LoRa is capable of communicating over 10km under line-of-sight environments. However, under non-line-of-sight environments, LoRa’s performance is severely affected by obstructions such as buildings and vegetations. Moreover, the promise of prolonged battery life requires extreme tuning of parameters. Last, a LoRa gateway supports up to 6,000 nodes with PRR requirement of >70%. This study also explores the relationship between LoRa transmission parameters and proposes an algorithm to determine optimal settings in terms of coverage and power consumption under non-line-of-sight environments. It further investigates the impact of LoRa Wide-area Networks on energy consumption and network capacity along with implementation of a LoRa medium access mechanism and possible gains brought forth by implementing such a mechanism.

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Section: Related Work and Conclusionmentioning

confidence: 99%

Known and Unknown Facts of LoRa

Liando

Gamage

Tengourtius

et al. 2019

ACM Trans. Sen. Netw.

280

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“…The problem of research and processing of useful signals [7][8][9][10][11][12][13][14] is related to the randomness of the observed processes. Signal processing theory allows obtaining optimal signal detection algorithms for parametric description of probability distribution (PDF).…”

Section: Introductionmentioning

confidence: 99%

Detection of a Harmonic Signal Against the Background of a Nonstationary Gaussianinterference With Complex Spectrum

Прокопенко

Omelchuk

Dmytruk

et al. 2021

ITS

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Background. Modern radar stations for various purposes operate in the conditions of interference created by the imprints of the radar signal from the background surface, from metrological formations (precipitation, clouds, etc.) and artificial radiation sources. Ensuring the operation of the radar in such difficult conditions requires the construction of adaptive signal processing algorithms that have high efficiency and maintain them when changing signal-to-noise situations. Objective. The purpose of the paper is creation of an adaptive algorithm for detecting a harmonic signal against the background of spatially correlated interference and estimating its parameters. Methods. Construction of a two-dimensional autoregressive model of a mixture of correlated spatial noise and harmonic signal and application of the empirical Bayesian approach to the synthesis of an adaptive algorithm for detecting and evaluating signal and noise parameters. Results. A two-dimensional adaptive space-time algorithm for detecting a radar signal reflected from a moving target against the background of a space-correlated interference is synthesized. The analysis of the efficiency of the algorithm by the Monte Carlo method is carried out. Conclusions. It is shown that the empirical Bayesian approach is an effective working methodology in solving the problem of detecting a harmonic signal and estimating its parameters under conditions of interference with a complex frequency spectrum under different conditions of a priori uncertainty of their parameters.

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“…Further, this study also compares recorded transmissions from within the car with the transmissions recorded using the receiver placed by the highway using the SDR setup seeking for observable Doppler Although LoRa technology is robust to a high degree against Doppler effect, it may still be possible to capture frequency deviations in the chirps due to Doppler effects and predict the speed of moving end nodes [39,40].…”

Section: Doppler Effectmentioning

confidence: 99%

Experience of LoRa low power wide area network

Liando¹

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I have reviewed the content and presentation style of this thesis and declare it is free of plagiarism and of sufficient grammatical clarity to be examined. To the best of my knowledge, the research and writing are those of the candidate except as acknowledged in the Author Attribution Statement. I confirm that the investigations were conducted in accord with the ethics policies and integrity standards of Nanyang Technological University and that the research data presented honestly and without prejudice.

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Multichannel target speed estimation by a colocated Doppler-pulse MIMO radar

Cited by 13 publications

References 5 publications

Known and Unknown Facts of LoRa

Known and Unknown Facts of LoRa

Detection of a Harmonic Signal Against the Background of a Nonstationary Gaussianinterference With Complex Spectrum

Experience of LoRa low power wide area network

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