A method for synthesizing satellite signals using GPU-based antenna arraying is designed to meet the high signal-to-noise ratio(SNR)requirements of a high-rate satellite communication system at the receiver.Based on the tradi-tional approach of full-spectrum synthesis,a non-uniform channelization module with digital down-conversion and cascaded polyphase filtering is introduced to improve the flexibility in handling non-uniformly distributed sub-channels within the signal bandwidth.The implementation is performed on a heterogeneous CPU+GPU platform for high efficiency.Through simulations and actual signal tests,the results show that the proposed design achieves a speedup of approximately 10～20 times com-pared to a traditional CPU platform,providing the possibility of real-time signal processing at the receiver.
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