Developing an assessing method for the informative value of a gravitational field anomaly at solving map matching navigation problems

Space geodesy and navigation
UDC: 
528.27+527.63:550.831.015:550.831.3
DOI: 
10.22389/0016-7126-2025-1023-9-2-13
1 Valov G. E.
2 Mikhailov P.S.
3 Koneshov V.N.
Year: 
2025
№: 
9
1023
Pages: 
2-13

Sсhmidt institute of physics of the Earth of the RAS

1, 
2, 
3, 
Abstract:
The article deals with development of a method for assessing the information content of the World Ocean’s gravitational field anomaly, taking into account the change in the modulus of the gravity anomaly horizontal gradient in the search area at solving navigation problems with significant errors in the initial coordinates of the survey profile. Two methods for evaluating the informativity of a field are presented, based on the value of the weighted average of the horizontal gradient in the search area and the same gradient of the movement profile there. The authors provide a comparison of various methods for assessing the information content of a field at solving navigation problems on many morphological structures (mountain, pit, ridge, hollow, saddle). The correctness of the navigation task solution’s preliminary calculation accuracy based on the informative value of the field was evaluated. As a result of the experiment, the optimal lengths of the survey gravimetric profile were determined when solving navigation problems using various mathematical methods, and many morphological structures were ranked according to the criterion of information value
The work was carried out within the framework of the state assignment of the Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences
References: 
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Citation:
Valov G. E., 
Mikhailov P.S., 
Koneshov V.N., 
(2025) Developing an assessing method for the informative value of a gravitational field anomaly at solving map matching navigation problems. Geodesy and cartography = Geodeziya i Kartografiya, 86(9), pp. 2-13. (In Russian). DOI: 10.22389/0016-7126-2025-1023-9-2-13
Publication History
Received: 21.05.2025
Accepted: 01.09.2025
Published: 20.10.2025

Content

2025 September DOI:
10.22389/0016-7126-2025-1023-9