SYSTEM AND METHOD OF GEOGRAPHICAL AND SPATIAL LOCATION Russian patent published in 2009 - IPC G01S5/14 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used for locating whatever object on the Earth surface and in navigation. Proposed system comprises the 1^st, 2^nd and 3^rd reference points (A, B, C), immobile relative to the Earth, spaced apart and not located on one line. Space platform (S) is visible from aforesaid points. At least, one object (P) stays above or on the Earth surface. Transmitter (1) operates in an on-line mode with one of the nodes selected by aforesaid fixed reference points (A, B, C) and space platform (S) to emit pulses at preset frequency, each pulse being emitted at preset, certain time interval. Receiver (2) maintains on-line communication with each aforesaid fixed reference points, object (P) and transmitter (1) to receive aforesaid pulses on the trajectory between platform (S) and points (A, B, C) communicating with receiver (2). Control unit (3) features on-line communication with transmitter (1) and receiver (2) intended for computing side faces of tetrahedron, for each pulse, the apices of which are defined by points (A, B, C) and platform (S). Time during which each pulse runs along aforesaid trajectory between platform (S) and every point (A, B, C) allows defining the continuation of trajectory of mentioned platform (S), when it stays visible for fixed reference points (A, B, C), and the equation of its flight. Both provide for possibility of computing probable locations of object (P) by both control unit (3) and object (P) proper.

EFFECT: exact and comprehensive trajectory determination.

32 cl, 4 dwg