MMWAVE-STUDIO: How to perform CFAR, clustering, AngleFFT, dopplerFFT for singleChip mmWave device

Palguna Kumar Reddy Gopireddy

Part Number: MMWAVE-STUDIO
Other Parts Discussed in Thread: AWR1843

Tool/software:

I am using DCA1000 EVM with AWR1843 for getting raw data.

I see that the postProc button in mmWave Studio plots the plots like "2D FFT amplitude profile", "range angle", and "Detection and Angle estimation Results" etc.

AWR1843 is a single chip device.

I have seen the code for getting raw ADC data in unit16 format and the range FFT output in the folder "C:\ti\mmwave_studio_02_01_01_00\mmWaveStudio\MatlabExamples\singlechip_raw_data_reader_example"

It doesn't provide the example code used for doppler-FFT, CFAR, angle-FFT, and clustering etc. I need to know this manually plotting the plots and change the values like probability of false alarm, guard length etc, depending on specific targets i want to observe. etc. I see the miscellaneous options botton in the radarStudioProcessing window (which shows the plots), mentioning the parameters for this like CFAR method, Gaurd length etc.

Where can I find the example code used for CFAR, doppler-FFT etc. used by postProc like range-FFT provided?

1 month ago

0 Cesar 1 month ago

TI__Guru*** 140364 points

Hi,

Unfortunately we don't have matlab code available for this functions. We only provide demos on TI EVMs

You can probably find such functions in the Matlab Tool. I think there is a Radar Toolbox

thank you

Cesar

0 Palguna Kumar Reddy Gopireddy 1 month ago in reply to Cesar

Prodigy 131 points

1) I have DCA1000 and AWR1843. Aren't these EVMs?

2) I am just asking for the code used by postProc. It should be somewhere in the mmWave studio installation folder, which i am not able to locate.

0 Cesar 1 month ago in reply to Palguna Kumar Reddy Gopireddy

TI__Guru*** 140364 points

Unfortunately the postProc Matlab code is not released.

For generic Matlab code you should probably check the Mathworks forums.

The target source code is provided in the mmwave SDK C:\ti\mmwave_sdk_03_06_02_00-LTS

Thank you

Cesar

0 Palguna Kumar Reddy Gopireddy 1 month ago in reply to Cesar

Prodigy 131 points

1) For using DCA1000, mmWave SDK is not required.

So you are saying the matlab code used by postProc can't be located, though it is in the mmWave stdio installation folder

(or)

post proc calls the matlab functions by sending the same values shown in miscellaneous options window

2) There are lot of files in mmWave SDK installation folder, please specify the place of the source code. From this I can develop my own.

0 Cesar 1 month ago in reply to Palguna Kumar Reddy Gopireddy

TI__Guru*** 140364 points

Hi,

matlab source code used by postProc is not provided in mmWave Studio. Only the executable is provided.

Matlab source code is not released

thank you

Cesar

0 Palguna Kumar Reddy Gopireddy 1 month ago in reply to Cesar

Prodigy 131 points

Hi. Thanks for the suggestion. The range, doppler FFTs I figured out from some of the documents like tidueo9.pdf.

But I am having confusion regarding the CFAR-CA usage. In the miscellaneous options window, it is mentioned that the threshold is 18dB. But for CFAR, the threshold is adaptive. i.e. it changes for each cell under test (CUT). The threshold to be used for each CUT is calculated by multiplying a scaling factor with the noise estimate obtained from the neighborhood of CUT.

But in in the miscellaneous options window, it is mentioned that the threshold is 18dB. How can this constant threshold be used for obtaining the detection points?

0 Zorah Ahmad 1 month ago in reply to Palguna Kumar Reddy Gopireddy

TI__Intellectual 2695 points

Hello,

Cesar is out of office, please expect a delay in response

0 Jitendra Gupta 1 month ago in reply to Palguna Kumar Reddy Gopireddy

TI__Guru 69000 points

Hi,

Please refer mmWave SDK and TI-Rex where application running on AWR1843 performs signal processing using DSP and/or HWA and it uses CFAR.

https://www.ti.com/tool/download/MMWAVE-SDK/03.06.02.00-LTS

https://dev.ti.com/tirex/explore/node?node=A__AJXx96rI7gxMSeZVEpNFrw__radar_toolbox__1AslXXD__LATEST

https://dev.ti.com/tirex/explore/node?node=A__AKYeTfuZO.zUHnjn7sP9kw__radar_toolbox__1AslXXD__LATEST

With the mmWave Studio, you need to use in-built PostProc tool to process the raw ADC data. Apart from that if you need to do your own defined processing, then please search in this forum for any existing solution from other member or search web to do your required algorithm based on Matlab or Python.

I suggest you to do your own research for those literature based queries which are not directly related to AWR1843 device or product.

Regards,

Jitendra

0 Palguna Kumar Reddy Gopireddy 1 month ago in reply to Jitendra Gupta

Prodigy 131 points

Hi. I did search the forum and able to produce the RD plot like done by the postProC of mmWave studiuo.

I also understood how the CFAR detection is perfumed. Thanks for that.

But I am struck at finding the scaling factor became an issue, which is not mentioned anywhere in the miscellaneous options window. Also want to know does the reference window length, gaurd window lengths shown in the miscellaneous options window are same for range CFAR and doppler CFAR (or) any of the reference window length, gaurd window lengths is different for doppler CFAR from range CFAR.

0 Cesar 1 month ago in reply to Palguna Kumar Reddy Gopireddy

TI__Guru*** 140364 points

Hi,

Unfortunately we don't have additional information regarding this topic.

We recommend you use available resources from Radar Signal Processing textbooks and Mathworks forums

thank you

Cesar

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MMWAVE-STUDIO: How to perform CFAR, clustering, AngleFFT, dopplerFFT for singleChip mmWave device