An HB100-type 10.525 GHz Doppler module, characterised with a multimeter, then its IF output sampled directly (no amplifier) by the ADC of a NUCLEO-F401RE board. The spectrum and the speed are ...
多普勒雷达作为运动感知的核心技术，其输出信号需要经过放大、滤波与频谱分析才能提取有效信息。本文以HB100与RCWL0516两种雷达模块为例，对比前端与集成传感器的差异，讲解从微伏级IF信号放大到FFT测频的完整信号处理链路。通过实际案例说明如何用FFT将多普勒频移换算为目标速度，并分析直流 ...
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