CCS: Please tell me the detailed algorithm for distance calculation

Hi Jacky,

The algorithm relies on the Zoom FFT and a detailed description is available in the High Accuracy Lab User Guide. Let us know if you have any specific questions about it.


Cheers,
Akash

Thank you very much for your reply , I'm sorry I didn't make it clear , I have read the book called “the High Accuracy Lab User Guide” carefully, now I want to know the distance value in the Chrome how to calculated.

My IWR1443BOOST measured distance value is 0.349m in the Chrome , I want to find the computing method of value 0.349 , so I opened the CCS project , look at the code carefully , I found that value is not calculated in the CCS program , in the CCS project , all of the data of Zoom FFT was sended to the Chrome through UART . I made a careful analysis of the send message , message format as below:

The length of a message is 2176 bytes , 1st part is the “head” , taking up 36 bytes , 2nd part is the “detectedObjects” , taking up 24 bytes , 3rd part is the “logMagRange” , taking up 2056 bytes , 4th part is the “statsInfo”, taking up 32 bytes , 5th part is the “padding”, taking up 28 bytes.

I think the value 0.349 is in the 3th part of message , is it? The 3th part include “MmwDemo_output_message_tl” taking up 8 bytes and “MMW_HWA_1D_OUT_PING” taking up 2048 bytes , now I want to know the computing method of value 0.349 , Which bytes are valid data ?  And how to compute ? Is there a formula for calculation ? How to calculate the final distance value from the message generated by ZOOM FFT?

 I read a lot of information on the official website of TI, but I didn't find any information about that, I was not found.

Please tell me , thanks!

 

Best Wishes!

Jacky Ye