This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

AWR2944: AWR 2944 Question about strong detection will increase the doppler bin's noise.

Part Number: AWR2944

Hi

       In AWR2944 ES2.0, we found a strange phenomenon: A far strong detection will increase all doppler bin's noise.We think this phenomenon is not corrent. Would you please help to analyze this phenomenon?

      Some config about RF: the RX gain=24; the HPF config: 175KHz&350KHz

       Test : We use a target simulator to simulate a far range detection in chamber with different power, and after 1D FFT and 2D FFT with windows, we plot the RD map, and calculated the noise of each rangebin, and result are as follows:

       A high power detection: we can see the detection is located at rangebin=136, dopplerbin =376, the power is 86.73, we can see the noise of all dopplerbin in rangebin=136 has increase a lot.

the green line is the noise of each rangebin,(noise is calculated by OS-CFAR), it's also easy to find the noise around rangebin=136 increased.

 A lower power detection: we can see the detection is located at rangebin=136, dopplerbin =378, the power is 65.73, we can see the noise is not effected by detection

the green line is the noise of each rangebin,(noise is calculated by OS-CFAR),the noise is not effected by detection..