esp_radar_train warning and csi caluculate fail error (AEGHB-786)

[ashashik]

Hi,

I am trying to use 2 esp32 boards with the steps in console_test and I see the following warnings when I try to train the data in very short time . Is this normal ?

W (34724) esp_radar: The capacity of subcarrier recording during calibration is exceeded, num: 10, corr: 0.991942
I (34724) esp_radar: time: 500/10, free_heap: 90560, num: 10, rssi: -49, gain: 0/0, wander: 0.008767, jitter: 0.000400, window: 41, begin: 48, end: 19, freq: 82Hz
W (34974) esp_radar: The capacity of subcarrier recording during calibration is exceeded, num: 10, corr: 0.991233
I (34974) esp_radar: time: 509/10, free_heap: 90560, num: 10, rssi: -50, gain: 0/0, wander: 0.009244, jitter: 0.000298, window: 40, begin: 68, end: 38, freq: 78Hz
W (35214) esp_radar: The capacity of subcarrier recording during calibration is exceeded, num: 10, corr: 0.990756
I (35214) esp_radar: time: 501/10, free_heap: 90560, num: 10, rssi: -50, gain: 0/0, wander: 0.008833, jitter: 0.000192, window: 36, begin: 18, end: 54, freq: 71Hz
W (35434) esp_radar: The capacity of subcarrier recording during calibration is exceeded, num: 10, corr: 0.991167

Also post training when I start sending csi data I see the following warning

RADAR_DADA,1437,1235444,0.008653,0.004736,0.004296,1,0.001287,0.000751,0.015615,1
W (1235654) algorithm: [169] fail
W (1235654) esp_radar: [509] csi calculate fail
RADAR_DADA,1438,1235894,0.007262,0.004836,0.004296,1,0.000292,0.000751,0.015615,1
I (1236174) esp_radar: time: 511/10, free_heap: 90200, num: 10, rssi: -48, gain: 0/0, wander: 0.008012, jitter: 0.002526, window: 35, begin: 18, end: 53, freq: 68Hz
RADAR_DADA,1439,1236174,0.008012,0.004980,0.004296,1,0.002526,0.000792,0.015615,1

[MacChu0315-Espressif]

Hi, to The first part of your statement, which is 'The capacity...', the reason for this output is that the program has made a value judgment on the num and corr values, and will warn when num >= 10 && corr < 0.99.
For the second point, I'm sorry I didn't understand your meaning, what operation did you do?

[ashashik]

For

1. Will this warning affect the wander threshold value accuracy ? I see it shows up within 10 seconds of starting the training .
2. I just use csi_send program on one node and use console test on the other node . I randomly see this "csi calculate fail" on the node running console test

W (1235654) algorithm: [169] fail
W (1235654) esp_radar: [509] csi calculate fail

[MacChu0315-Espressif]

1. nope, it's merely a warning.
2. which means that there is a problem with the received CSI data, and the algorithm has made a calculation error and thus discarded the data of this frame.

[ashashik]

Post training I sometimes see the wander threshold is returned as nan . Any way to fix this ?

RADAR_THRESHOLDS,wander = nan, jitter = 0.010993