IWR1642: IWR1642 Produces two group of point clouds on one target in ROS demo

Hi User,

Could you please share your chirp config.

Thanks

Yogesh

Here is the cfg file, thanks.

sensorStop
flushCfg
dfeDataOutputMode 1
channelCfg 15 3 0
adcCfg 2 1
adcbufCfg -1 0 0 1 0
profileCfg 0 76 129 7 72.1 0 0 8 1 400 6250 0 0 30
chirpCfg 0 0 0 0 0 0 0 1
chirpCfg 1 1 0 0 0 0 0 2
frameCfg 0 1 16 0 100 1 0
lowPower 0 1
guiMonitor -1 1 1 0 0 0 0
cfarCfg -1 0 0 8 4 4 0 4096
cfarCfg -1 1 0 4 2 3 0 4096
peakGrouping -1 1 0 0 1 511
multiObjBeamForming -1 1 0.5
clutterRemoval -1 0
calibDcRangeSig -1 0 -5 8 256
extendedMaxVelocity -1 0
bpmCfg -1 0 0 1
lvdsStreamCfg -1 0 0 0
nearFieldCfg -1 0 0 0
compRangeBiasAndRxChanPhase 0.0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
measureRangeBiasAndRxChanPhase 0 1.5 0.2
CQRxSatMonitor 0 3 7 115 0
CQSigImgMonitor 0 99 8
analogMonitor 1 1
sensorStart

Can i change the cfg to disable 1 antenna and MIMO? perhaps this way it will be better in detecting cars in long range. thanks.

Hi,

Yes, you should be able to disable MIMO to increase the range. How-ever I am still not able to understand the high level requirement here. Are you trying increase range with better resolution?

You can reference the chirp config used in traffic monitoring lab:

http://dev.ti.com/tirex/explore/node?node=AK.ycB3NDPxLKYNO-gxBgw__VLyFKFf__LATEST

Thanks

Yogesh

Hi,

Is your issue resolved?

Thanks

Yogesh

Hi，

I wish to monitor the traffic with IWR1642 in ROS demo. But one object produces two pointclouds with MIMO configure. how can i fix this?

Second, i try to disable one antenna and use 1TX 4RX mode by changeing "channelCfg 15 3 0" in cfg file to  "channelCfg 15 1 0" , then the sensor stop working.

Does out of box demo support  1TX 4RX mode ? if so, how do i enable it?