METHOD FOR DETERMINATION OF OBJECT SPATIAL ATTITUDE Russian patent published in 2006 - IPC G01S1/08 H04B7/185 

FIELD: radio direction-finding, in particular, methods for determination of spatial attitude of an object, for example, flight vehicle, and azimuth and angular altitude directions to the respective beacon.

SUBSTANCE: the beacon transmitter transmits and the on-board receiving system receives electromagnetic radiation that is plane-polarized in the horizontal and/or vertical plane. The on-board receiving system has an antenna device made in the form of two antennas installed opposite each other, for example, with the rear bases facing each other, symmetrically relative to the plane parallel with the plane tied with the object. The antenna of the antenna device is made in the form of a body that is transparent for electromagnetic signals of a material with a high relative dielectric permeability ε and the receiving element positioned in the material. The antenna is fastened on the object so that the angle between the longitudinal axes of the antenna and object would provide change of the reflection coefficient of the radiation from the antenna at a change of direction of the object motion by an angle mainly not exceeding one degree. The received radiation is selected, its level is measured, the levels of radiations received by the antennas are compared, and in case the levels are different the object is turned in the respective plane until equal signals from both antennas are obtained, and the azimuth/angular altitude direction to the respective beacon is determined by this angle of turn.

EFFECT: enhanced accuracy of determination of location of the object in space irrespective of the weather conditions due to the enhanced accuracy of determination of the azimuth and angular altitude directions to the respective beacon, absence of a false bearing, enhanced safety of object motion, for example, at landing, reduced mass and dimensional characteristics of the respective on-board equipment, enhanced technical-economic efficiency.

11 cl, 3 dwg