一种蝙蝠回声定位信号处理的仿生模型及其FPGA实现

Bin-bin Cheng, Fei Yang, Jing Xu
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引用次数: 2

摘要

为了再现蝙蝠回声定位系统的信号处理方法,提出了蝙蝠生物声的仿生模型。首先在MATLAB环境下对该模型进行了仿真,结果表明该模型能够区分出两个回波高度重叠的闪烁,并在噪声环境下得到每个目标的准确距离。本文还考虑了该模型的FPGA实现,并基于DSP工具箱中的System Generator在Simulink@MATLAB中开发了该模型的硬件描述代码。结果表明,该仿生模型在单个FPGA芯片上硬件可实现,并可实现实时处理。
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A biomimetic model for bats' echolocation signal processing and it's implementation on FPGA
A biomimetic model for bats' biosonar is proposed to reproduce the signal processing method in its echolocation system. The model is first simulated in MATLAB environment and the results imply that this model can distinguish two glints with highly overlapped echoes and get accurate ranges for each target in noisy environments. The FPGA realization for this model is also considered and the hardware description code for this model is developed in Simulink@MATLAB based on System Generator for DSP toolbox. The results improve that it is hardware realizable for the bionic model in a single FPGA chip and real-time processing can be achieved.
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