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首页> 外文期刊>Circuits, systems, and signal processing >Design and Implementation of DDC Based on Walsh Transform for HF Radar Receiver
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Design and Implementation of DDC Based on Walsh Transform for HF Radar Receiver

机译：基于Walsh变换的高频雷达接收机DDC的设计与实现。

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摘要

This paper studies the design and multiplierless realization of a digital down converter (DDC) in a high frequency (HF) radar receiver. The novel structure mainly consists of a fast Walsh transform (FWT) and an inverse fast Walsh transform (IFWT), both of which can be implemented using only addition and subtraction. Because the transform kernels of the FWT and the IFWT are the same, the implementation complexity of the DDC is significantly reduced. Simulation and field test results are given to demonstrate that the proposed method outperforms the common method and is suited for real-time signal processing of software digital down conversion in a digital signal processor (DSP), such as the ADSP21060.
机译：本文研究了高频（HF）雷达接收机中数字下变频器（DDC）的设计和无乘实现。新颖的结构主要由快速沃尔什变换（FWT）和反向快速沃尔什变换（IFWT）组成，两者都可以仅使用加法和减法来实现。由于FWT和IFWT的转换内核相同，因此DDC的实现复杂度大大降低。仿真和现场测试结果表明，该方法优于通用方法，适用于ADSP21060等数字信号处理器（DSP）中软件数字下变频的实时信号处理。

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