Relay apparatus, relay satellite, and satellite communication system

摘要

A reply apparatus includes: a reception analog switch matrix that outputs, to reception processing units, a wideband reception signal in a band wider than the bandwidth processable by the reception processing unit; a connecting unit that outputs demultiplexed signals to transmission processing units; a transmission analog switch matrix that outputs, to the same transmission antennas, signals subjected to transmission processing; a local generating unit that generates and transmits local signals having different frequencies to the reception processing units; a local-phase-difference calculating unit that calculates a phase difference between the local signals and inputs the phase difference to the reception processing units; and reception-phase correcting units that perform phase correction on the basis of the phase difference. The reception processing units, when the wideband reception signal is input, apply reception processing to divided signals obtained by extracting a part of bands of input signals on the basis of the local signals.

主权项

1. A relay apparatus comprising:
a local generating unit that generates a plurality of local signals having different frequencies; a local phase calculating unit that detects, for two local signals having frequencies that are adjacent to each other among the local signals, with reference to one local signal of the two local signals, a phase of the other local signal and extracts a phase difference between the two local signals; a first reception processing unit that receives an input of a reception signal and applies, to the input reception signal, processing including frequency conversion in which the reference local signal is used; a second reception processing unit that receives the input of the reception signal and applies, to the input reception signal, processing including frequency conversion in which the phase-detected local signal is used and phase correction based on the phase difference; and a multiplexing unit that multiplexes a signal processed by the first reception processing unit and a signal processed by the second reception processing unit.