FIELD: physics.
SUBSTANCE: invention relates to precision instrumentation and can be used in designing systems of initial orientation of various objects based on the use of satellite measurements. Method for determining the initial orientation of an object consists in the fact that according to the readings of two satellite navigation receivers (SNR) placed on a rigid base, symmetrically located relative to the centre of mass of the object at a known distance from it along the roll axis, in the high-precision positioning mode, the coordinates of both SNP are determined in the geocentric coordinate system. These values are used to determine coordinates of the centre of mass of the object as the middle of the vector lying between the points of the SNP location, after which the cosine of the first angle formed in the geocentric coordinate system by vectors lying between the location point of the first SNP and the centre of mass of the object and between the origin of the geocentric system of coordinates and the centre of mass of the object is determined, as well as the cosine of the second angle formed by vectors lying between the location point of the second SNP and the centre of mass of the object and between the origin of the geocentric coordinate system and the centre of mass of the object, the values of which are used to determine the pitch angle. After that, the azimuth angle is determined, after which the base with the SNPs placed on it is set in the direction of the pitch axis and their new coordinates are determined from the readings of both SNPs. Further, the cosine of the first angle formed in the geocentric coordinate system is determined by vectors lying between the point of the new location of the first SNP and the centre of mass of the object and between the origin of the geocentric coordinate system and the centre of mass of the object, the cosine of the second angle is similarly determined, taking into account the new location of the second SNP, the values of which are used to determine the roll angle.
EFFECT: high accuracy of determining initial orientation of objects.
1 cl, 1 dwg
