Best integer equivariant position estimation for multi-GNSS RTK: a multivariate normal and t-distributed performance comparison

R. Odolinski; P. J. G. Teunissen

doi:10.1007/s00190-021-01591-9

Performance Comparison of Several Range-based Techniques for Indoor Localization Based on RSSI

International Journal on Information and Communication Technology (IJoICT) ◽

10.21108/ijoict.v7i1.550 ◽

2021 ◽

Vol 7 (1) ◽

pp. 40-53

Author(s):

Dwi Joko Suroso ◽

Farid Yuli Martin Adiyatma ◽

Ahmad Eko Kurniawan ◽

Panarat Cherntanomwong

Keyword(s):

Approximation Method ◽

Indoor Localization ◽

Classical Method ◽

Signal Strength ◽

Received Signal Strength ◽

Performance Comparison ◽

Position Estimation ◽

Received Signal Strength Indicator ◽

Simple Power ◽

Distance Parameter

The classical rang-based technique for position estimation is still reliably used for indoor localization. Trilateration and multilateration, which include three or more references to locate the indoor object, are two common examples. These techniques use at least three intersection-locations of the references' distance and conclude that the intersection is the object's position. However, some challenges have appeared when using a simple power-to-distance parameter, i.e., received signal strength indicator (RSSI). RSSI is known for its fluctuated values when used as the localization parameter. The improvement of classical range-based has been proposed, namely min-max and iRingLA algorithms. These algorithms or methods use the approximation in a bounding-box and rings for min-max and iRingLA, respectively. This paper discusses the comparison performance of min-max and iRingLA with multilateration as the classical method. We found that min-max gives the best performance, and in some positions, iRingLA gives the best accuracy error. Hence, the approximation method can be promising for indoor localization, especially when using a simple and straightforward RSSI parameter.

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On the admissibility and nonadmissibility of the usual estimator for the mean of multivariate normal population and conclusions to optimal design

Optimization ◽

10.1080/02331937408842218 ◽

1974 ◽

Vol 5 (7) ◽

pp. 591-597

Author(s):

H. Lätter

Keyword(s):

Optimal Design ◽

Normal Population ◽

Multivariate Normal ◽

Usual Estimator ◽

Multivariate Normal Population ◽

The Mean

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Performance comparison of conventional and backtracking algorithms in circuit routing

IEE Proceedings G (Electronic Circuits and Systems) ◽

10.1049/ip-g-1.1980.0051 ◽

1980 ◽

Vol 127 (6) ◽

pp. 309

Author(s):

D.J. Kinniment

Keyword(s):

Performance Comparison

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Direct ammonia fueled solid oxide fuel cells: A comprehensive review on challenges, opportunities and future outlooks

International Journal of Energy Technology ◽

10.32438/ijet.203011 ◽

2020 ◽

pp. 70-91 ◽

Cited By ~ 1

Author(s):

Molla Asmare ◽

Mustafa Ilbas

Keyword(s):

Electric Power ◽

Energy Demand ◽

Renewable Energy Sources ◽

Clean Energy ◽

Performance Comparison ◽

Optimum Operating ◽

Practical Implementation ◽

Human Society ◽

Energy Access ◽

Green Fuel

Nowadays, the most decisive challenges we are fronting are perfectly clean energy making for equitable and sustainable modern energy access, and battling the emerging alteration of the climate. This is because, carbon-rich fuels are the fundamental supply of utilized energy for strengthening human society, and it will be sustained in the near future. In connection with this, electrochemical technologies are an emerging and domineering tool for efficiently transforming the existing scarce fossil fuels and renewable energy sources into electric power with a trivial environmental impact. Compared with conventional power generation technologies, SOFC that operate at high temperature is emerging as a frontrunner to convert the fuels chemical energy into electric power and permits the deployment of varieties of fuels with negligible ecological destructions. According to this critical review, direct ammonia is obtained as a primary possible choice and price-effective green fuel for T-SOFCs. This is because T-SOFCs have higher volumetric power density, mechanically stable, and high thermal shocking resistance. Also, there is no sealing issue problem which is the chronic issues of the planar one. As a result, the toxicity of ammonia to use as a fuel is minimized if there may be a leakage during operation. It is portable and manageable that can be work everywhere when there is energy demand. Besides, manufacturing, onboard hydrogen deposition, and transportation infrastructure connected snags of hydrogen will be solved using ammonia. Ammonia is a low-priced carbon-neutral source of energy and has more stored volumetric energy compared with hydrogen. Yet, to utilize direct NH3 as a means of hydrogen carrier and an alternative green fuel in T-SOFCs practically determining the optimum operating temperatures, reactant flow rates, electrode porosities, pressure, the position of the anode, thickness and diameters of the tube are still requiring further improvement. Therefore, mathematical modeling ought to be developed to determine these parameters before planning for experimental work. Also, a performance comparison of AS, ES, and CS- T-SOFC powered with direct NH3 will be investigated and best-performed support will be carefully chosen for practical implementation and an experimental study will be conducted for verification based on optimum parameter values obtained from numerical modeling.

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