AWR1642: get crossing interference signal

zheng peng

Part Number: AWR1642
Other Parts Discussed in Thread: AWR1243

I have AWR1243 boost and AWR1642 boost, and i want to capture the crossing interference between FMCW radar. What should i do?

over 5 years ago

0 Vivek Dham over 5 years ago

TI__Guru 58035 points

Hello Zheng,

You can synchronize the frames of the two devices using the digital SYNC IN signal and using the framing in HW triggered mode. That way you can time sync the framing between the two. Then you can configure the profile such that they cross each other.

Regards,
Vivek

0 Vivek Dham over 5 years ago in reply to Vivek Dham

TI__Guru 58035 points

Hello Zheng,

The other option could be to keep high duty cycle of framing I both the devices and then even if you asynchronously operate them facing each other with different profile configuration , some of the chirps would cross each other. The way they cross will be random in this case.

Regards,

Vivek

0 zheng peng over 5 years ago in reply to Vivek Dham

Prodigy 25 points

Hello Vivek,

Is there any documents for reference，especially the detailed steps?

0 Jitendra Gupta over 5 years ago in reply to zheng peng

TI__Guru 69990 points

I'm afraid that currently there is no official document available for this kind of experiment.

To generate the interference you need to synchronize two (or more) devices to transmit in sync with one another.

As per first reply above, AWR1243 you need set as Master (rlSetChannelConfig API) so it can give SYNC_OUT pulse,

which you need to connect to AWR1642 SYNC_IN line.

In AWR1642 device you need to configure frameConfig as hardware triggered mode, refer rlSetFrameConfig API (rlFrameCfg_t->triggerSelect)

C:\ti\mmwave_dfp_01_02_05_01\ti\control\mmwavelink\

Regards,

Jitendra

0 Jitendra Gupta over 5 years ago in reply to Jitendra Gupta

TI__Guru 69990 points

Adding one info here for other users -

We have one white paper and video training on Interference Mitigation for AWR/IWR devices, it may help to understand the problem and solution with mmwave sensor.

https://www.ti.com/lit/an/swra662/swra662.pdf?ts=1594031186268

https://training.ti.com/mmwave-awr1x-interference-detection-crucial-step-effective-mitigation

Regards,

Jitendra

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AWR1642: get crossing interference signal