METHOD OF DETERMINING COORDINATES OF OBJECT Russian patent published in 2017 - IPC G01S5/10 

FIELD: radio engineering, communication.

SUBSTANCE: ground stations transmit radio signals (RS) in the form of three high-frequency harmonic oscillations with preset frequencies containing the specified high-frequency components and low-frequency components. During the generation and transmission of RSs, the conditions, specified by the method, are satisfied. A quarter-phase reception of a set of high-frequency RSs with a specified frequency of the local oscillator is performed at the object. The obtained analogue quarter-phase components are converted into digital quarter-phase components (DQPC). Subsequently DQPCs are formed for three low-frequency harmonic oscillations corresponding to the RSs transmitted by each station. From the obtained DQPCs they form DQPCs, corresponding to the harmonic oscillations on difference frequencies, and based on the DQPCs they form DQPCs, corresponding to oscillation phase differentials with the same difference frequencies, but belonging to RSs from different stations. Based on the DQPCs formed by this method (considering time delays in forming and transmitting signals to communication lines) relative distances are expressly identified to the object from the phase centers of station antennas and, based on them, the spatial coordinates of the antenna phase center of the object are expressly identified.

EFFECT: ensuring unambiguous definition of the spatial coordinates of an object located in any point of space, with high accuracy.

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