AWR6843AOP: Factory calibration without using an anechoic chamber

Hi,

Sean Wu said:

1) how do I know if the noise created by the clutter is low enough? Are there quantitative criteria for judging?

This will be up to your discretion.

Sean Wu said:

Can I set a search window of 0.2m with a command like below to filter out peak A and peak B to get a reliable calibration result?

measureRangeBiasAndRxChanPhase 1 1.8 0.2

You may, but I would recommend redoing this in a location that is less cluttered to get a more reliable result. You should only see one peak in the range-profile plot.

Best,

Nate

Hi Sean,

Sean Wu said:

Is there a source code of measureRangeBiasAndRxChanPhase ?

This is built into the out-of-box demo.

Sean Wu said:

Let's say the command ' measureRangeBiasAndRxChanPhase 1 1.8 0.2 '.  What does the region the calibration software search for the peak of corner reflector? Is it a cube located at 1.8m at boresight with side lengh 0.2m? Or, is it an region between two spheres which radius are 1.7 and 1.9?

It is a spherical cutout, so mathematically it would be defined as the region where the radial distance from the radar is greater than 1.7 m and less than 1.9 meters.

Best,

Nate

Hi Sean,

I think this is meant to be a typical frequency since returns may be more or less than 1 MHz, so it's a middling value.

Best,

Nate