MMWCAS-DSP-EVM: TX antennas used in object detection usecase

Sara Marina Salvador

Part Number: MMWCAS-DSP-EVM

Hi,

I am working on the object detection usecase.

In the PROCESSOR SDK Radar Datasheet I read that this usecase is runned using 8 Tx Antennas (pag17) and in the source code it is defined

/* Total number of Txs across sensors that are chirped as part of TDM-MIMO */
#define CHAINS_CASCADE_RADAR_NUM_TX_ANTENNA (8U)

But reading the code for sensors configuration I see that there are 10 chirps in each frame, and I understand that the number of TX antennas used in total is 10, 3 for master and two of the slaves and only one for the last slave.

Is there an error in the datasheet and in "CHAINS_CASCADE_RADAR_NUM_TX_ANTENNA" definition or am I misunderstanding ?

Thank you,

Sara Salvador

over 5 years ago

0 Gaviraju Doddabettahalli Bettegowda over 5 years ago

TI__Genius 14305 points

I think NUM_TX_ANTENNA & Chirps are two different things.

Still I will discuss with my team members & come back to you

Regards

Gaviraju

0 Piyali Goswami over 5 years ago in reply to Gaviraju Doddabettahalli Bettegowda

TI__Mastermind 30245 points

The CHAINS_CASCADE_RADAR_NUM_TX_ANTENNA is really not used for the actual framing. This is only used as a check for the frame periodicity. For all practical purposes you can ignore this macro.

Thanks and Regards

Piyali

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MMWCAS-DSP-EVM: TX antennas used in object detection usecase