METHOD OF DETERMINING, BASED ON MEASURED RELATIVE DISTANCES OF COORDINATES OF AN OBJECT Russian patent published in 2020 - IPC G01S5/06 

FIELD: radio navigation.

SUBSTANCE: invention relates to radio navigation and can be used to determine spatial coordinates (SC) of an object, including a mobile one. At each station, a radio signal is synchronously transmitted in the form of three components, each of which is a harmonic oscillation with a given frequency. Set of radio signals transmitted by stations is received quadrature on the object. Digital quadrature components (DQC) corresponding to the received set of radio signals are generated in the cycle at preset sampling rate and number of cycles in the cycle. Next three pairs of digital quadrature components (QC) corresponding to the components of the transmitted radio signals are formed in the form of a DQC. Then, three pairs of digital quadrature components are formed by summation of each obtained QC of the corresponding pair. Using the obtained digital quadrature components, the parameters given in the method are formed and time delays are determined from the formed parameters. Time shifts occurring during generation of radio signals at stations are excluded from them. Corrected time delays and when the conditions specified in the method are met, the relative distances to the phase center (PC) of the object antenna from the station PC antennas are uniquely determined. Spatial coordinates of the object PC of the object are uniquely determined from relative distances. Method allows excluding the effect of reflected, for example, ground signals and random phases of heterodynes of transmitters and a receiver. No synchronization is required between the object and set of transmitted stations.

EFFECT: unambiguous determination of object SC.

1 cl