SU949338A1 - Method of determination of goniometer limb turn angle - Google Patents

Description

one

The invention relates to geodetic measurements, in particular, to methods for obtaining the orientation of devices relative to the directions of the sides of networks fixed on the ground.

A known method for determining the angle of rotation of the limb of the goniometric device relative to the initial direction includes setting the goniometer to a node, measuring the directions to reference points from the node, centering the angle of the measuring device, reducing the measured directions and calculating the angle of turning of the limb rij.

However, this method is very labor intensive due to the need for centering the goniometer, reducing the measured directions, as well as the low accuracy of determination due to centering errors.

There is also known a method for determining the angle of turn of the limb of a goniometric device relative to the initial direction, which includes measuring the direction of the orientation points from a nodal point, measuring distances from this point to reference points, and calculating the angle of turn of the limb 2.

According to a known method, the angle of rotation is determined through coordinate conditions, which is associated with time-consuming calculations.

The aim of the invention is to reduce the laboriousness of the method, due to the determination of the spatial placement of the goniometric instrument and guide points.

This goal is achieved by the fact that according to the method including measurement

20 directions. To reference points from a nodal point, measuring distances from this point to reference points and calculating the angle of times39 9338 4

the limb gate, the angle gauge, the reference points, and the angle is set outside the nodal point, the limp gate is determined from the gauge. measure the directions to rage

l / ni-rtn-r tNl-M HU66in (KJ -MgXLcSiy () 1 "o-arc-cgrLbACOs4Ni -) () UcCOSCN -N) J, SAsin (N -Ng); S. sin (N -N); C - .. e in vn J 11 /, LXsm (N | -Nj); the distance from the blunt point to the reference points; Direction to the reference points from the bridging point; . N ,, N directions to reference points from arbitrary point (vn nodal). The drawing shows a flow chart of the method, where A, B and C are reference points; D - knot point; P is an arbitrary point. To determine the angle of rotation of the limber of the goniometric device relative to the initial direction, for example, the angle between the zero diameter / horizontal circle and the meridian, the axial meridian or conditional line, the goniometer, set at the point DV measure directions to the reference points ki1 .. and 15 NB and NC The distances from this point to the reference points 5d, Sg and Sj are measured. . Then the goniometer is installed outside the nodal point, for example, at point P, measuring G l.ASiM (.aSiHUg-Ng) -UcSiHCN -N) 1 Oijj arc-tg LlAC09 (NVN KlaCO () - vLcCOS (NPc-N) J,

de (M —NB); 4 SBsin (N | -N); L- Scsin (NS -N -);

In a

distance from the nodal point to the reference points; jO directions to reference points from a nodal point;

directions to landmarks from pro- 55

. arbitrary point (outside the nodal).

Sources of information taken into account in the examination

1. Solovyov A.F. and others. Geodesy. Part 1. M., Iz-80 MO USSR, 1966,

with. 353-355.

2.Livanov M.M. Engineering and geodetic survey and preparation of executive plans of industrial enterprises. M., Nedra, 1966, p. 70-71. The UT of the direction to the reference points calculates the angle of rotation of the limb relative to the initial direction using the indicated formula. The proposed method makes it possible to reduce the laboriousness of measuring the angle of turn of the limb and improve the accuracy of its determination, and allows measurements to be carried out with respect to the sides of any extent with their spatial instability.

Claims (1)

 The invention The method for determining the angle of turn of a limber of an angular gauge relative to the reference direction, including measuring directions to reference points from a nodal point, measuring distances from this point to reference points and calculating the angle of turn of a limb, is different from the complexity of the method, due to the determination of the spatial location of the goniometric device and reference points, the goniometric device is set outside the anchor point, the directions to the reference points are measured points, and the angle limb rotation is determined from the expression