您好,请问当我的采样频率小于dechirp后的中频频率时,该中频频率是否被滤除?
例如,使用2MHz的采样频率,100Mhz/us的调频率,时延0.1us也就是15m处的目标回波,能否被接收?
如果被接收,根据Nyquist采样定理,存在混叠,应该在距离像上,看到该目标,但不在15mi处?
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您好,请问当我的采样频率小于dechirp后的中频频率时,该中频频率是否被滤除?
例如,使用2MHz的采样频率,100Mhz/us的调频率,时延0.1us也就是15m处的目标回波,能否被接收?
如果被接收,根据Nyquist采样定理,存在混叠,应该在距离像上,看到该目标,但不在15mi处?
你好,
芯片内部有LPF+HPF,相应图和采样率相关,请参考下面的论坛讨论:
IWR6843: filter order/frequency response - Sensors forum - Sensors - TI E2E support forums