IWR6843: Actual object data from IWR6843

Hi Manoj, 

Can you provide a bit more information about what you're currently observing? Perhaps some screenshots/images could be helpful here. Can you also let me know which example software and configuration you are currently using? For example, are you using the out-of-box demo?

Thanks and Regards,

Josh

Hi Josh,

Thank you for your response. Please find the details below,

I am using LRPD binary with 50m range. I have also enabled peak grouping as well as static object detection configuration.

I faced radar to a wall which was 3 meters away from radar. It was able to detect that wall at 3 meters distance, but apart from that it was detecting few more points which are at distance 10 to 19 meters. So, these objects was not actually there since only a wall at 3meters distance was the obstacle to radar. I am not sure what these obstacle points are about. So, I want radar to detect actual object, in this case wall at 3 meters.

Let me know if you need any further details.

Thanks,

Manoj

Hi Manoj, 

Can you share a bit more information about your application? Is it indoor/outdoor? What is the maximum range required? etc... We may have a different example demo which is more suited to your needs. The LRPD demo is tuned to be very sensitive such that it is able to detect humans at long distances. Because of this, at shorter ranges / or indoor settings we do expect to see many unwanted reflections which it seems is the issue you are currently facing. Basically, the signals are bouncing off the wall at 3m then also off other objects in the room/ area and then back to the radar, this is why detections are reported at distances of 10-20m along with 3m. 

Best Regards,

Josh

Hi Josh,

It is an outdoor application. I am using radar for obstacle avoidance purpose on unmanned aircraft system (UAS). LRPD looks working for my application, since I am testing it from past many days. But now I have observed this scenario.

When radars are mounted on UAS, and it is hovering in open space at high altitude at that time there is no obstacle. But radar detects obstacles at distance of 2 or 4 meters continuously. I was expecting it should not detect any obstacles at that high altitude.

Could you please help me with your suggestions. 

Thanks,
Manoj

Hi Manoj, 

It would be strange that obstacles are detected in this scenario that you are describing. Can you please let me know which configuration file (.cfg) you are using in your testing? For example, is one of the default files provided in the Radar Toolbox used (If so, which)? Are you using a custom .cfg file (If so, is it possible for you to share that file)?

Best Regards,

Josh

Hi Josh,

I am using 6843_50m_2D.cfg file. This file is provided in radar toolbox "ti\mmwave_industrial_toolbox_4_12_1\labs\Long_Range_People_Detection\chirp_configs". I have modified few parameters in this file like I have enabled peak grouping in "cfarCfg" and I have disabled clutter removal in "clutterRemoval" for detecting static objects. These are the only changes I have made in this config file.

Let me know your views on this.

Thanks,

Manoj

Hi Manoj, 

Thanks for the response. Please give me another day to look into this, I'd like to see if there may be some bug in the software. Can you confirm you are using the LRPD demo binary from Industrial Toolbox 4.12.1?

Best regards,

Josh

Hi Josh,

Yes, I am using the LRPD demo binary from Industrial Toolbox 4.12.1.

Thanks,
Manoj

Hi Josh,

Any update on this? Please let me know if you need any further details.

Thanks,
Manoj

Hi Manoj, 

My apologies for the delayed response here. Thank you for confirming the demo code which is used. To give you an update, I have not yet been able to attempt to replicate this issue on my end. The only place for me to test this in a completely open space would be outdoors and unfortunately the weather here has not been sufficient for me to perform the testing. In the meantime, I do have a few additional questions:

1. Can you describe the manner in which the radar is mounted on the UAS? For example, Is it mounted on the bottom and pointing straight down to the ground? Is it facing a direction parallel to the ground? Is it possible that any structural components of the UAS are within the radar's FOV? 

2. Is the radar module that you are testing with one of the EVM boards provided by TI or is this a custom board designed with the IWR6843? If it is an EVM can you let me know specifically which variant? IWR6843ISK? ODS? etc...

Best Regards,

Josh

Hi Josh,

1. Application is avoiding obstacles coming on the way to the UAS. So, radar is mounted on arms of UAS just above the motor of propeller. Radar is facing parallel to the ground.

2. Radar module is not EVM board. It is a custom board designed with IWR6843.

Thanks,
Manoj

Hi Manoj,

Thank you for the response. I will need another couple of days to perform some checks on my end and get back to you with the results. Thank you for your patience here.

Best Regards,

Josh

No worries, Josh. Take your time. 

Thanks,
Manoj