甚高频阵列波束构造与容量优化OA

Very high frequency(VHF)satellite communication is an important means for ensuring maritime safety and distress handling.Linear orthogonal basis beams are an effective way to enhance communication capacity in VHF satellite systems under limited bandwidth and array size.However,the non-uniform hollow divergence characteristic of linear orthogonal basis beams leads to difficulties in fair utilization of multiple orthogonal modes and limits long-distance communication.To address the bottleneck of fairness and long-distance transmission in VHF satellite communication with limited bandwidth and array size,this study investigates the mathematical mechanism and construction methods of novel nonlinear orthogonal basis beams.A beam wide-angle domain coverage method that combines linear and nonlinear orthogonal bases is designed to achieve optimal energy coverage in target areas.Furthermore,a satellite-ship collaborative communication capacity optimization method,oriented towards service requirements,is proposed to efficiently ensure effective capacity for maritime communication.