RU2613929C2

RU2613929C2 - Method for determining distance between points on earth surface

Info

Publication number: RU2613929C2
Application number: RU2015120788A
Authority: RU
Inventors: Альберт Васильевич Зубков
Priority date: 2015-06-01
Filing date: 2015-06-01
Publication date: 2017-03-22
Also published as: RU2015120788A

Abstract

FIELD: physics.

SUBSTANCE: previously, the polygons with the stationary points are equipped on the Earth surface, periodically, the distance is measured between these points with the GPS or GLONASS Lgks systems and the geodetic methods Li (t), their ratio Li (t) / Lgks=Ki(t) is found under the change of this ratio in time, the forecast for the immediate future of the periodic Earth's changes are carried out for individual areas and regions, and the users determine the coordinates of the user operating points and the distance between them by introducing amendments to the SSC data at a specific time depending on Li(t)=LgksKi⋅(t) (1). The polygon with the distances between the points of tens and hundreds of meters is equipped outside the influence of the underground work in the underground mines, the relative deformation of the rock mass ε_m is determined, its change over time is determined, and the amendments to the measured distances on the surface are introduced, using the dependence of Li(t)=Lgks [1ε_M(T)] (2).

EFFECT: improving accuracy of determining distance between the user points.

2 cl; 1 dwg

Description

The invention relates to methods for determining the distance between points on the surface of the Earth using global space systems (GCS) GPS and GLONASS.

A known method for determining the distance between points on the surface of the Earth using geodetic methods. The disadvantage of this method is the extreme complexity of the work when measuring distances at large bases in areas with limited direct visibility (forest and mountains).

There is also a method of measuring distance when using the global space systems GPS and GLONASS, including equipping fixed points with "known" coordinates from which signals are continuously transmitted to correct pseudo-orbit satellites, setting custom points between which it is necessary to determine the distance (basis) and the position of which is calculated when measuring distances from several satellites to these points when making serifs on the surface of the Earth and using the mathematical apparatus [2].

GPS and GLONASS systems for simplification are based on the constant and maximum radius of the Earth, equal to an average of 6371 km, typical for 1990 and the beginning of 2002, which was approved by order of the Government of the Russian Federation of June 20, 2007 No. 797-R. The Russian Ministry of Defense and Roscosmos should ensure the implementation of an updated version of the state geocentric coordinate system "Earth parameters 1990" (PZ-90.02).

A disadvantage of the known methods is that, as a result of the radiation of the Cosmos, the size of the Earth can change with a cycle of 11 years in relative units by ε _AF = (2-4) ⋅ 10 ^-4 or more (see Fig.) [3]. As a result of this, the coordinates of points and bases change over time.

The aim of the invention is to improve the accuracy of determining the distance between user points when using GCS systems, taking into account the periodic changes in the size of the Earth.

This goal is achieved by the fact that on the surface of the Earth equip landfills, where between stationary points periodically measure the distance by GPS, GLONASS and geodetic methods, for example using laser rangefinders. Find the length of the bases between points using the GCS L _GCS , which must be const, and the geodetic measurements L _i (t), which varies over time, determine their ratio L _i (t) / L _GCS = K _i (t). Next, they build graphs of their changes to date and mathematically substantiate the forecast for the near future for individual territories and regions.

Users determine the coordinates of points and bases when using the GCS G _GCS and find the exact length of the basis at a specific time according to

To increase the accuracy of determining L _i (t), it is advisable to equip the polygons in underground workings on the basis of tens and hundreds of meters outside the influence zone of underground work in mines, using geodetic methods to determine the relative deformation of the rock mass ε _m , build a graph of its change since 2002 ε _m (t) and introduce a correction to the bases on the surface using the dependence

The dependence ε _M (t) = ε _AF for the territory of the Urals has been reliably rebuilt since 1998 (represented by the figure), and it can be used to determine exact bases on the Earth's surface, taking into account that

where K _i (t) = 1 + ε _i (t);

For a fundamental solution of the problem posed, it is necessary to build the actual surface of the satellite’s orbits by inter-location between GC satellites in orbit, build the actual surface of the Earth from satellites to permanent points on the Earth’s surface and determine the coordinates of user points and the distance between these points using well-known technologies and mathematical apparatus.

Information sources

1. Dementiev V.E. Modern geodetic technology and its application: Textbook for high schools. - Ed. 2e-M.: Academic project. 2008 .-- 591 p.

2. Application of the Russian Federation 9711374, IPC ⁶ G01S 5/14. Global space positioning and radio navigation system, beacon and receiver used in this system / Jean-Luc Iseler (FR), Jean-Paul Aguste (FR), Domenic Berge (FR), Bruno Cunyi (FR).

3. Zubkov A.V. Periodic expansion and contraction of the Earth as a likely mechanism of natural disasters // Lithosphere, 2013, No. 2, p. 145-156, http: //www/litoshera.ru

Claims

1. A method for determining the distance between user-defined points on the Earth’s surface using GPS and GLONASS global space systems (GCS), including transmitting signals from fixed points with known coordinates for correcting pseudo-orbits of GPS and GLONASS satellites, setting up user points whose coordinates are determined by measuring distances from several satellites to these points, characterized in that in order to improve the accuracy of determining the coordinates of user points and the distance between they, on the Earth’s surface, are equipped with landfills with stationary points, which are control points, periodically between these points, the distance Lx is measured by GPS and GLONASS systems and Li (t) by a geodetic method using a laser range finder, where i is the direction along the X and Y axes, while the magnitude of Lgx is constant, and the value of Li (t) changes over time, their ratio Li (t) / Lgx = Ki (t) is found, by changing this ratio in time, a forecast is made for the near future for periodic changes in the size of the Earth for individual territories and regions, while users determine the coordinates of the working user points and the distance between them, introducing amendments to the GCS data at the corresponding specific time according to

Li (t) = Lгк⋅Ki (t)

2. The method according to p. 1, characterized in that the landfills are additionally equipped in underground workings with distances between points tens and hundreds of meters outside the zone of influence of underground work in mines, the relative deformation of the rock mass ε _m is determined, its change over time is determined, and correct the measured distances on the surface using the dependence

Li (t) = Lgx [1 + ε _m (t)].