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On the statistical errors of RADAR location sensor networks with built-in Wi-Fi Gaussian linear fingerprints.

Zhou M, Xu YB, Ma L, Tian S - Sensors (Basel) (2012)

Bottom Line: However, up to now, there is still not enough related work on the relations between the statistical errors, system parameters, number and interval of the RPs, let alone calculating the correlated analytical expressions of concern.Therefore, in response to this compelling problem, under a simple linear distribution model, much attention will be paid to the mathematical relations of the linear expected errors, number of neighbors, number and interval of RPs, parameters in logarithmic attenuation model and variations of radio signal strength (RSS) at the test point (TP) with the purpose of constructing more practical and reliable RADAR location sensor networks (RLSNs) and also guaranteeing the accuracy requirements for the location based services in future ubiquitous context-awareness environments.Moreover, the numerical results and some real experimental evaluations of the error theories addressed in this paper will also be presented for our future extended analysis.

View Article: PubMed Central - PubMed

Affiliation: Communication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Nangang District, Harbin, Heilongjiang, China. mzhou@hit.edu.cn

ABSTRACT
The expected errors of RADAR sensor networks with linear probabilistic location fingerprints inside buildings with varying Wi-Fi Gaussian strength are discussed. As far as we know, the statistical errors of equal and unequal-weighted RADAR networks have been suggested as a better way to evaluate the behavior of different system parameters and the deployment of reference points (RPs). However, up to now, there is still not enough related work on the relations between the statistical errors, system parameters, number and interval of the RPs, let alone calculating the correlated analytical expressions of concern. Therefore, in response to this compelling problem, under a simple linear distribution model, much attention will be paid to the mathematical relations of the linear expected errors, number of neighbors, number and interval of RPs, parameters in logarithmic attenuation model and variations of radio signal strength (RSS) at the test point (TP) with the purpose of constructing more practical and reliable RADAR location sensor networks (RLSNs) and also guaranteeing the accuracy requirements for the location based services in future ubiquitous context-awareness environments. Moreover, the numerical results and some real experimental evaluations of the error theories addressed in this paper will also be presented for our future extended analysis.

No MeSH data available.


RSS variations in linear distribution model with two LOS visible APs.
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f12-sensors-12-03605: RSS variations in linear distribution model with two LOS visible APs.

Mentions: There are two line-of-sight (LOS) visible APs (Linksys WAP54G) located at the right and left ends of the corridor at 2 m height, respectively. At each RP (indicated with •’s), there are 300 continuous-time RSS samples recorded for the construction of radio map. The variations of RSS-mean, maximum and minimum are shown in Figure 12. Obviously, if we record the RSS-mean and associated coordinates as the fingerprints, the pre-assumed logarithmic Gaussian channel can be effectively satisfied.


On the statistical errors of RADAR location sensor networks with built-in Wi-Fi Gaussian linear fingerprints.

Zhou M, Xu YB, Ma L, Tian S - Sensors (Basel) (2012)

RSS variations in linear distribution model with two LOS visible APs.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3376608&req=5

f12-sensors-12-03605: RSS variations in linear distribution model with two LOS visible APs.
Mentions: There are two line-of-sight (LOS) visible APs (Linksys WAP54G) located at the right and left ends of the corridor at 2 m height, respectively. At each RP (indicated with •’s), there are 300 continuous-time RSS samples recorded for the construction of radio map. The variations of RSS-mean, maximum and minimum are shown in Figure 12. Obviously, if we record the RSS-mean and associated coordinates as the fingerprints, the pre-assumed logarithmic Gaussian channel can be effectively satisfied.

Bottom Line: However, up to now, there is still not enough related work on the relations between the statistical errors, system parameters, number and interval of the RPs, let alone calculating the correlated analytical expressions of concern.Therefore, in response to this compelling problem, under a simple linear distribution model, much attention will be paid to the mathematical relations of the linear expected errors, number of neighbors, number and interval of RPs, parameters in logarithmic attenuation model and variations of radio signal strength (RSS) at the test point (TP) with the purpose of constructing more practical and reliable RADAR location sensor networks (RLSNs) and also guaranteeing the accuracy requirements for the location based services in future ubiquitous context-awareness environments.Moreover, the numerical results and some real experimental evaluations of the error theories addressed in this paper will also be presented for our future extended analysis.

View Article: PubMed Central - PubMed

Affiliation: Communication Research Center, School of Electronics and Information Engineering, Harbin Institute of Technology, Nangang District, Harbin, Heilongjiang, China. mzhou@hit.edu.cn

ABSTRACT
The expected errors of RADAR sensor networks with linear probabilistic location fingerprints inside buildings with varying Wi-Fi Gaussian strength are discussed. As far as we know, the statistical errors of equal and unequal-weighted RADAR networks have been suggested as a better way to evaluate the behavior of different system parameters and the deployment of reference points (RPs). However, up to now, there is still not enough related work on the relations between the statistical errors, system parameters, number and interval of the RPs, let alone calculating the correlated analytical expressions of concern. Therefore, in response to this compelling problem, under a simple linear distribution model, much attention will be paid to the mathematical relations of the linear expected errors, number of neighbors, number and interval of RPs, parameters in logarithmic attenuation model and variations of radio signal strength (RSS) at the test point (TP) with the purpose of constructing more practical and reliable RADAR location sensor networks (RLSNs) and also guaranteeing the accuracy requirements for the location based services in future ubiquitous context-awareness environments. Moreover, the numerical results and some real experimental evaluations of the error theories addressed in this paper will also be presented for our future extended analysis.

No MeSH data available.