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access icon free Quantification of road grade to improve the estimation of fuel consumptions using the global positioning system

  • Author(s): Ming Li 1 ; Lei Yu 2 ; Guohua Song 1
    • View affiliations
  • Source: Volume 11, Issue 8, October 2017, p. 485 – 490
    DOI:  10.1049/iet-its.2017.0081 , Print ISSN 1751-956X, Online ISSN 1751-9578
© The Institution of Engineering and Technology
Received 01/03/2017, Accepted 20/05/2017, Revised 09/05/2017, Published 23/05/2017

Since the geodetic height data is as rough as in metres collected by the consumer grade global positioning system (GPS) receiver, it is difficult to accurately estimating the road grade. In this study, the research attempted to develop a simple and practical approach to quantify the road grade. First, the characteristics of the raw GPS data was analysed, and a data cleaning and correction method was designed to improve the data quality. Then the study developed a method for calculating the road grade by dividing GPS points into pools. It was shown that the average difference between the road grade generated by the study and by the field measurement is only 0.1%. Finally, the study analysed the precision of the fuel consumption estimation when the road grade was taken into consideration. The results showed that the precision increased by 11.8, 10.0 or 2.8%, respectively, when the road grade was positive, negative or both.

Inspec keywords: Global Positioning System; fuel economy; geodesy; road vehicles; energy consumption

Other keywords: Global Positioning System; geodetic height data; data cleaning method; GPS receiver; data quality; fuel consumption estimation; data correction method; field measurement; road grade quantification; raw GPS data analysis

Subjects: Transportation; Radionavigation and direction finding; Automotive transportation (energy utilisation)

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