A Double-Layer Distributed Transmission and Processing Structure for Multi-Channel Aperture Synthesis Passive Imaging Systems

Aperture synthesis passive imaging system requires more input channels to achieve higher spatial resolution, leading to a square rate growth of connection between channels. To reduce the connection complexity in multi-channel aperture synthesis system, a novel double-layer distributed transmission and processing structure is proposed in this paper. The proposed structure is composed of fully-interconnected inner layers and ring-shaped outer layers, providing the ability for distributed computation and the scalability of the system. A data transmission method for the proposed structure is also presented to ensure that the correlation computation can be calculated in real time and without redundancy. The implementation of the proposed structure is analyzed, such as the uniform distribution of the calculation through the system, the tradeoff between the connection complexity and the transmission bandwidth, etc. The simulation results verify the effectiveness of the system and demonstrate that the proposed structure can tolerate high transmission delay and achieve good transmission utilization.