AWR2243: Velocity resolution

Alice Ruget

Part Number: AWR2243
Other Parts Discussed in Thread: TIDEP-01012, TIDEP-01017, MMWCAS-DSP-EVM

Hi,

I am using the TI AWR2243P Cascade Radar evaluation board (TIDEP-01012) with the TI MMWCAS-DSP-EVM Evaluation module (TIDEP-01017). I have a question concerning the velocity resolution.

In the matlab code test1_param.m in \ti\mmwave_studio_03_00_00_14\mmWaveStudio\MatlabExamples\4chip_cascade_MIMO_example\main\cascade\input. the formula for the velocity resolution comprehends the number of tx antennas:

velocityResolution = lambda / (2*nchirp_loops * chirpInterval*numTxAnt)

Why is it the case?
Thank you very much

over 2 years ago

0 Abhed Misra over 2 years ago

TI__Genius 13765 points

Hi,

Please refer the Application Report SWRA554A.

Regards

0 Alice Ruget over 2 years ago in reply to Abhed Misra

Prodigy 165 points

Hi, to check I understood well.

The velocity resolution is inversely proportional to the transmit frame duration. The transmit antennas are triggered subsequently. Each transmit antennas has a frame duration of nchirp_loops * chirpInterval .

Hence the formula is divided by nchirp_loops * chirpInterval*numTxAnt.

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AWR2243: Velocity resolution