## Draft of a Reference Document “Digital Earth for PNT”

Transactions of IAA RAS, issue 52, 23–26 (2020)

**DOI**: 10.32876/ApplAstron.52.23-26

**Keywords**:
gravitational field, magnetic field, navigation, coordinate system

### Abstract

Currently, to ensure the location of a consumer who is in the complete absence of GNSS signals (under water, underground), disruption in the continuity of the navigation signal (tunnels, canyons, caves), or when working in enclosed spaces, a technology for navigation through geophysical fields is being developed. To ensure this technology, information of the parameters of the gravitational and magnetic fields of Earth is needed. This requires the development of a special reference document (RD). Thus, the goal of this work is the formation of the draft RD, which was called "Digital Earth for PNT" (Positioning, Navigation and Timing). The paper presents the results of the development of the draft RD, containing an expanded amount of information. The RD developed includes the following new sections: digital model of the geoid, characteristics of the gravitational gradient, Earth’s magnetic field parameters, methods for calculating relativistic corrections for navigation in near-Earth space – time, a brief description of the basic technical means of geodesy and navigation along the geophysical fields of the Earth, methods and means of metrological support in navigation and geodesy, a forecast of the development of methods and means of navigation through the geophysical fields of the Earth, as well as proposals to expand the composition of the Russian segments of IAG (International Association of Geodesy) and GGOS (Global Geodetic Observing System) services. These new sections are necessary for solving the problems of geodesy and navigation in near-Earth space, including the Earth’s gravitational and magnetic fields. At present, RD “Digital Earth for PNT” has received approval from several organizations. The paper presents the results of producing a draft document for solving geodesy and navigation problems in near-Earth space, including the Earth’s gravitational and magnetic fields.

### Citation

`O. V. Denisenko, I. S. Silvestrov, V. F. Fateev, R. A. Davlatov, D. S. Bobrov, M. M. Murzabekov, Eu. A. Rybakov, V. P. Lopatin. Draft of a Reference Document “Digital Earth for PNT” // Transactions of IAA RAS. — 2020. — Issue 52. — P. 23–26.`

```
@article{denisenko2020,
abstract = {Currently, to ensure the location of a consumer who is in the complete absence of GNSS signals (under water, underground), disruption in the continuity of the navigation signal (tunnels, canyons, caves), or when working in enclosed spaces, a technology for navigation through geophysical fields is being developed. To ensure this technology, information of the parameters of the gravitational and magnetic fields of Earth is needed. This requires the development of a special reference document (RD). Thus, the goal of this work is the formation of the draft RD, which was called "Digital Earth for PNT" (Positioning, Navigation and Timing).
The paper presents the results of the development of the draft RD, containing an expanded amount of information. The RD developed includes the following new sections: digital model of the geoid, characteristics of the gravitational gradient, Earth’s magnetic field parameters, methods for calculating relativistic corrections for navigation in near-Earth space – time, a brief description of the basic technical means of geodesy and navigation along the geophysical fields of the Earth, methods and means of metrological support in navigation and geodesy, a forecast of the development of methods and means of navigation through the geophysical fields of the Earth, as well as proposals to expand the composition of the Russian segments of IAG (International Association of Geodesy) and GGOS (Global Geodetic Observing System) services. These new sections are necessary for solving the problems of geodesy and navigation in near-Earth space, including the Earth’s gravitational and magnetic fields. At present, RD “Digital Earth for PNT” has received approval from several organizations.
The paper presents the results of producing a draft document for solving geodesy and navigation problems in near-Earth space, including the Earth’s gravitational and magnetic fields.},
author = {O.~V. Denisenko and I.~S. Silvestrov and V.~F. Fateev and R.~A. Davlatov and D.~S. Bobrov and M.~M. Murzabekov and Eu.~A. Rybakov and V.~P. Lopatin},
doi = {10.32876/ApplAstron.52.23-26},
issue = {52},
journal = {Transactions of IAA RAS},
keyword = {gravitational field, magnetic field, navigation, coordinate system},
pages = {23--26},
title = {Draft of a Reference Document “Digital Earth for PNT”},
url = {http://iaaras.ru/en/library/paper/2029/},
year = {2020}
}
```

```
TY - JOUR
TI - Draft of a Reference Document “Digital Earth for PNT”
AU - Denisenko, O. V.
AU - Silvestrov, I. S.
AU - Fateev, V. F.
AU - Davlatov, R. A.
AU - Bobrov, D. S.
AU - Murzabekov, M. M.
AU - Rybakov, Eu. A.
AU - Lopatin, V. P.
PY - 2020
T2 - Transactions of IAA RAS
IS - 52
SP - 23
AB - Currently, to ensure the location of a consumer who is in the
complete absence of GNSS signals (under water, underground),
disruption in the continuity of the navigation signal (tunnels,
canyons, caves), or when working in enclosed spaces, a technology for
navigation through geophysical fields is being developed. To ensure
this technology, information of the parameters of the gravitational
and magnetic fields of Earth is needed. This requires the development
of a special reference document (RD). Thus, the goal of this work is
the formation of the draft RD, which was called "Digital Earth for
PNT" (Positioning, Navigation and Timing). The paper presents the
results of the development of the draft RD, containing an expanded
amount of information. The RD developed includes the following new
sections: digital model of the geoid, characteristics of the
gravitational gradient, Earth’s magnetic field parameters, methods
for calculating relativistic corrections for navigation in near-Earth
space – time, a brief description of the basic technical means of
geodesy and navigation along the geophysical fields of the Earth,
methods and means of metrological support in navigation and geodesy,
a forecast of the development of methods and means of navigation
through the geophysical fields of the Earth, as well as proposals to
expand the composition of the Russian segments of IAG (International
Association of Geodesy) and GGOS (Global Geodetic Observing System)
services. These new sections are necessary for solving the problems
of geodesy and navigation in near-Earth space, including the Earth’s
gravitational and magnetic fields. At present, RD “Digital Earth for
PNT” has received approval from several organizations. The paper
presents the results of producing a draft document for solving
geodesy and navigation problems in near-Earth space, including the
Earth’s gravitational and magnetic fields.
DO - 10.32876/ApplAstron.52.23-26
UR - http://iaaras.ru/en/library/paper/2029/
ER -
```