METHOD FOR DETERMINING THE LOCATION OF A GROUND SATELLITE COMMUNICATION STATION BY A RETRANSMITTED SIGNAL Russian patent published in 2021 - IPC H04K3/00 

FIELD: radio location.

SUBSTANCE: invention relates to radio equipment, namely to methods for determining the location (DL) of radio emission sources, and can be used to determine the location of ground stations (GS) of satellite communication. To realise the technical result, at the preparatory stage, the frequency instabilities of each of the coherent channels of the multi-channel radio receiving apparatus are compensated, and the location of space vehicles (SV) is specified based on the results of measurements of the inclined ranges. During the measurement process, a retransmitted GS signal from at least three space vehicles is received by the ground station for determining location, the signal and interference situation is evaluated in a given frequency band ΔF_i in each SV, an examination is conducted for the possibility of forming a correlation convolution (CC) of the GS signals received by the first and the jth SVs. In case of the absence or formation of a non-contrast maximum of the CC for at least one "mirror" SV, a GS signal received from the first SV is isolated. The main characteristics of the isolated GS signal is analysed. A copy of the analysed signal is formed based thereon with a phase accuracy. Re-examination is conducted for the possibility of forming a CC of the received signals, and amplification thereof is performed if necessary. The delays in the reception of signals Δτ_1,j are calculated in the conditions of compensation of the interference signals, and the coordinates of the GS are determined based thereon by the range-difference method.

EFFECT: technical result consists in increasing the interference protection of measuring the coordinates of the GS of satellite communication by means of isolating signals in the main channel from noise and conducting analysis thereof, forming a copy thereof with a phase accuracy with a high level and free from interference and noise.

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