Method of determining the vertical profile of seawater density on the basis of measurements of the parameters of the movement of the uncontrollable autonomous probe

by

L.A. Krasnodubets1,2

1Federal State Educational Institution of Higher Education «Sevastopol State University» Russian Federation, Sevastopol, Universitetskaya St., 33

2Institute of Natural and Technical Systems, Russian Federation, Sevastopol, Lenin St., 28

E-mail: lakrasno@gmail.com

DOI: 10.33075/2220-5861-2017-4-8-15

UDC 621.384 – 027.31

Abstract:

     A method is proposed for determining the vertical profile of the seawater density as a function of depth based on the construction of a mathematical model of the profiling process that establishes a relationship between the density of the surrounding marine environment and the trajectory parameters of the vertical motion in this medium of a submerged autonomous probe with known mass-size characteristics. The use of such a model makes it possible to put the inverse problem of the dynamics, the solution of which leads to the construction of the algorithmic structure of the information system that provides during the immersion of an uncontrolled autonomous probe the determination of the vertical profile of the density of seawater and its increment as a function of depth.

Keywords: autonomous probe, water density, profiling, mathematical model, inverse dynamic problem, optimization, information system, trajectory parameters.

Full text in PDF (RUS)

LIST OF REFERENCES

  1. http://www.windows2universe.org/earth/Water/density.html (data obrashhenija: 16.11.2017).
  2. Zhemkov E.I. Metod i ustrojstvo gidrostaticheskogo izmeritelja plotnosti morskoj vody. Sovremennye metody i sredstva okeanologicheskih issledovanij: materialy 12-j Mezhdunar. nauch.-tehn. konf. Ch. I. M., 2011. pp. 95-97.
  3. Fedotov G.A. Novaja modifikacija gidrostaticheskogo metoda opredelenija plotnosti morskoj vody. Fundamental’naja i prikladnaja gidrofizika, 2013. Vol. 6, No 1. pp. 58–65.
  4. www.anton-paar.com (data obrashhenija: 16.11.2017).
  5. Shpoljanskij A.N. Sistema izmeritel’naja gidrologicheskaja. Rukovodstvo po jekspluatacii SZMS. SPb.: «Granit7». 2003.
  6. GSSSD.77-84. Morskaja voda. Shkala prakticheskoj solenosti 1978 g.
  7. UNESCO Technical Papers in Marine Science, No. 44 – Algorithms for Computation of Fundamental Properties of Seawater.
  8. http://www.seabird.com/products/profiling-ctds (data obrashhenija: 16.11.2017).
  9. https://www.google.com/patents/WO2009014467A2 Sposob opredelenija solenosti i plotnosti morskoj vody. Patent WO 2009014467 A2, opublikovan 29.01.2009 g. 1
  10. Lojcjanskij L.G. Mehanika zhidkosti i gaza. M.: Nauka, 1991. 600 p.
  11. Krut’ko P.D. Obratnye zadachi dinamiki v teorii avtomaticheskogo upravlenija. M.: Mashinostroenie, 2004. 576 p.

Loading