Study on the Influence of Downward Continuation on Matching Suitability in Underwater Geomagnetic Navigation

Abstract:

Geomagnetic matching is to utilize the geomagnetic field for positioning, and the matching suitability of candidate matching areas (CMAs) is a key factor of affecting matching precision. In underwater geomagnetic navigation, the underwater geomagnetic map is usually obtained by downward continuation, and therefore the influence of downward continuation on matching suitability is studied in this article. Firstly, the downward continuation algorithm is briefly introduced. Then the comparison analysis of matching suitability before and after downward continuation is made from an experimental point of view. Results show that the CMAs that own excellent matching suitability can still keep the well matching suitability, and moreover, for the CMAs whose matching suitability is normal or bad, the matching suitability may be improved after downward continuation. The conclusions of this article may provide helpful lessons for matching suitability analysis in underwater geomagnetic navigation.

• Periodical: Advanced Materials Research (Volume 788)
• Pages: 741-744
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.788.741
• Online since: September 2013
• Authors: Peng Wang, Xiao Ping Hu, Mei Ping Wu, Hua Mu, Hai Ping Yuan
• Keywords: Downward Continuation, Experiment, Matching Suitability, Underwater Geomagnetic Navigation

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