Patent ID: 7528777

Claim:
A geographic and space positioning system comprising: a first, a second, and a third base which are fixed in relation to the earth, spaced away and each having an offset alignment in relation to each other and each having a previously known location, wherein the three bases are not aligned in a straight line; a space platform, simultaneously visible from the three fixed bases and which moves to successive positions, as a function of time, according to a space platform trajectory that is inclined in relation to the rotation axis of the earth; a transmitter, installed in at least one of the fixed bases in order to emit pulses in a determined frequency, each pulse in a predetermined reference instant; a receiver for each of the fixed bases, each receiver being installed in one of the fixed bases in order to receive said pulses in a signal trajectory covering the distance between the space platform and the fixed base associated with the receiver, wherein said pulses are reflected by the space platform from the transmitter to the receiver; a precision clock in each of the fixed bases, the precision clocks being synchronized with each other; and a control unit operatively connected to both the transmitter and each receiver, in order to calculate, for each pulse emission instant, the lateral edges of a tetrahedron, whose vertices are defined by the three fixed bases and by the space platform, based upon the determination of the propagation time of each pulse, in said signal trajectory, between the space platform and each fixed base in order to allow determining a respective extension of the space platform trajectory, while the latter is visible by the fixed bases, the tetrahedron edges being obtained with the time differences between the instant of the emission of each pulse and the instant of the arrival at each fixed bases.