Design of Low-resource and High-bandwidth Adaptive Shape Filtering for Low-orbit Satellites
During the communication process of low-orbit satellites,the signal level undergoes significant dynamic changes.In order to improve channel utilization,the system needs to automatically control the transmission rate based on link conditions.This paper pro-posed a new design method of low resource and large bandwidth shaping filter for low-orbit satellites,that ensure uninterrupted system communication and meet real-time communication requirement.The method adopts a parallel multiphase cascaded Cascade Integrator Comb(CIC)to design shaping filters,which can achieve shaping of large bandwidth signals from hundreds of kHz to hundreds of MHz,and solve the problem of adaptive continuous shaping filtering for high,medium,and low speed signals.Compared to traditional shaping filters,the filter has 8 times higher high-speed signal processing capability and can save more than 95％of multiplier resources.Simula-tion results show that the shaping effect and out of band suppression of the filter on the signal are almost consistent with traditional fil-ters.
国家科技期刊平台
NSTL
万方数据
