Patent ID: 11888576
Assignee: THALES
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The method of claim 1, further comprising:
during the first phase before launch of the satellite, permanently installing a second opposition matrix in a second repeater channel of the N repeater channels, wherein the second opposition matrix comprises N input rows, a first input row of the N input rows being a direct input row connected directly to an output of a first divider of a second set of N dividers, and each of the remaining N-1 input rows being a derived opposition row connected respectively to a corresponding one of the remaining dividers in the second set of N dividers at one output, wherein each derived opposition row of the second opposition matrix comprises a different remotely controllable attenuator or phase shifter, wherein the second opposition matrix comprises a second single output terminal connected to an input terminal of a second frequency transposition converter, and wherein the second opposition matrix comprises a second combiner with N combiner inputs and one combiner output, the second combiner supplied at each of its N combiner inputs by a corresponding one of the N input rows of the second opposition matrix, and the one combiner output of the second combiner connected to the second single output terminal of the second opposition matrix;
during the second phase, connecting the second single output terminal of the second opposition matrix to the first transmission source and disconnecting the remaining N transmission sources from the corresponding repeater channel of the N repeater channels by configuring switches of the output selection ring;
during the third step, connecting a second reception source of the N reception sources to the direct input row of the second opposition matrix and disconnecting the N-1 remaining reception sources from the derived opposition input rows of the second opposition matrix, wherein the second reception source corresponds to a second neighboring reception spot of N neighboring reception spots, the second neighboring reception spot covering a fourth satellite access station of the N satellite access stations;
during the fourth step, receiving, at the first satellite access station, a third multiplex of test signals and digitizing, by the first satellite access station, the third multiplex of test signals into a second useful acquisition signal, wherein the third multiplex of test signals are transmitted by the at least the portion of the N satellite access stations, received by the second reception source, and retransmitted by the first transmission source;
during the fifth step, connecting one of the N-1 remaining reception sources to corresponding one of the derived opposition rows of the second opposition matrix and disconnecting the other N-1 remaining reception sources from the derived opposition rows of the second opposition matrix;
during the fifth step, receiving, at the first satellite access station, a fifth multiplex of test signals and digitizing, by the first satellite access station, the fifth multiplex of test signals into a second interference acquisition signal, wherein the fifth multiplex of test signals is transmitted by the at least the portion of the N satellite access stations, received by the N-1 remaining reception sources and retransmitted by the first transmission source;
during the sixth step, causing by the first satellite access station, the computer for spectral monitoring to calculate a second complex correlation coefficient between the second useful acquisition signal and the second interference acquisition signal and to determine, based at least on the second complex coefficient, a second attenuation value and a second phase change value associated with the derived opposition rows of the second opposition matrix, the second attenuation value and the second phase change value configured to cause rejection of the interference signal generated by the remaining reception source connected to the corresponding one of the derived opposition rows of the second opposition matrix on a repeater reception access assigned to the fourth satellite access station; and
during the seventh step, setting, via the remote control, the remotely controllable attenuators or phase shifters of the second opposition matrix to the second attenuation value and the second phase change value.