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[参考译文] AWR1642:有关 mmWave sdk1.1中 MmwDemo_interFrameProcessing()的问题

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https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/666145/awr1642-question-about-mmwdemo_interframeprocessing-in-mmwave-sdk1-1

器件型号:AWR1642

 请有人解释为什么比例因子被选为“obj->log2NumDopplerBins+4”?

对于2^4的窗口增益、它是由 Q19到 Q15格式转换产生的吗?  

 

           obj->azimutStaticHeatMap[binIndex].Real =(Int16_T)(obj->fftOut2D[0].Real >>(obj->log2NumplerBins+4);/*+4因为2D-FFT 窗口的增益为2^4 */

           obj->azimutStaticHeatMap[binIndex++].imag =(int16_t)(obj->fftOut2D[0].imag >>(obj->log2NumDopplerBins+4);

 

上述代码除外、它们来自 mmWave SDK-1.1 DSS_DATA_PATH.c 第1729-1730行。