AWR1443BOOST: the size of adcData?

user6126338

Prodigy 100 points

Part Number: AWR1443BOOST

i follow the guide

and i use matalb code to read adc_data.bin

why the size of adcData become 4*262144 ?

i know the ''4''meaning ,they have four Rx

and i get chirp ADC_sample is 256

so 262144/256 =1024 ,this might be the number of chirp i think

is my idea right?

if yes,where to set the number of chirp in mmwave studio?

and if i get the first 256 samples >>>> like this adcData (1:4,1:256)

i know the chirp is emanated by Tx0 and Tx1

tx1 phase difference in Rx is like [0w 1w 2w 3w]

tx2 phase difference in Rx is like [4w 5w 6w 7w]

if i want the angle of target ,how to use

Φ = 2π/λ ΔR = 2π/λ dsinθ

i mean that if i take tx0 and tx1

Φ will be 1w-0w or 5w-4w or 5w -0w or 1w-4w ,and the answer will be different .

How to fix it?

over 5 years ago

0 Kyle Cousino over 5 years ago

TI__Mastermind 24955 points

The ADC file size is determined by the following calculation:

ADC_Data_Size_per_Frame = sizeof(real_part) * sizeof(imaginary_part) * num_adc_samples * num_chirps * num_TX * num_RX

The assumption here is that you configure the ADC in Complex Mode. The real and imaginary values are each 2 bytes. When configured in complex mode, each sample will have a size of 4 bytes. When configured in real mode, each sample will have a size of 2 bytes.

The key parameters that determine the file size are:

ADC mode (complex or real mode) - this means either 4 bytes or 2 bytes per sample
Number of ADC samples per chirp
Number of chirps per frame
Number of TX antennas
Number of RX antennas

Regards,
Kyle

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AWR1443BOOST: the size of adcData?