电子战宽带数字信道化的优化设计方法

An optimization design method forwideband digital channelization in EW

针对电子战中传统的宽带数字信道化接收机存在的数据量大、占用计算资源多、实现复杂的问题,提出一种基于高处理速率的优化设计方法。首先从理论上推导任意过采因子的信道化数学模型,选择恰当过采因子建立多相结构;对低速率的多相滤波器组进行优化改进,设计速率更高的滤波器组结构,并使信道化的所有运算工作于相同速率上。硬件实现表明该设计方法功能正确便于实现,并且处理速度快,节省计算资源。

The traditional wideband digital channelized receiver in electronic warfare has problems of large amount of data,occupying too much computing resources and complex realization.In order to solve these problems,an optimization design method for channelization based on high processing rate is proposed.Firstly the mathematical model of channelization with arbitrary oversampling factor is derived theoretically,and the appropriate oversampling factor is chosen to establish the polyphase structure.Secondly the polyphase filter bank is optimized to run at higher rate and all the operations of the channelization are designed to work at the same rate.The proposed method is successfully implemented on the hardware,and the result shows that the method is correct and easy to implement.Additionally its processing speed is fast and the computing resources are saved as well.