IWR1443: Range and accuracy limitations of High accuracy firmware

Akshay Patel1

Part Number: IWR1443
Other Parts Discussed in Thread: IWR1642BOOST

High accuracy firmware achieves ~1 mm accuracy through interpolation. Interpolation is performed through 16384 point DFT.

As there are 16384 points in output DFT, it is possible to achieve 1 mm accuracy up to 16384 mm (16.384 m).

Is it possible to achieve 1 mm accuracy up to 40 m or beyond using IWR1443?

over 6 years ago

0 Akash Gondalia over 6 years ago

TI__Guru 50240 points

Hi Akshay,

I'll need to discuss this with my team but we should have an answer for you in the next few days.

Cheers,

Akash

0 Akshay Patel1 over 6 years ago in reply to Akash Gondalia

Intellectual 690 points

Hi Akash,

Awaiting response.

Regards,

Akshay

0 Akash Gondalia over 6 years ago

TI__Guru 50240 points

Hi Akshay,

1 mm can be achieved for distances up to 10 m although for further distances this will deviate a little bit. For best accuracy I would recommend having an appropriate fixed setup and also appropriate lensing for beam narrowing.

Cheers,

Akash

0 Akshay Patel1 over 6 years ago in reply to Akash Gondalia

Intellectual 690 points

Hi Akash,

Thanks for confirmation, I have few questions:

Is this hardware limitations or high accuracy FW limitation?
Is it possible to achieve required accuracy by combining 4k FFT with high accuracy FW?
Is it possible with some algorithm externally?
If not then what accuracy is expected at a distance of ~30 m.

Regards,

Akshay

0 Akash Gondalia over 6 years ago in reply to Akshay Patel1

TI__Guru 50240 points

Hi Akshay,

Accuracy at 30 m can anywhere from 5 mm up to a few cm depending on configuration, sensor placement, and material/environment being measured.

I'd recommend ordering an IWR1642BOOST EVM and evaluating for yourself.

Cheers,

Akash

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IWR1443: Range and accuracy limitations of High accuracy firmware