fail err(-11) when in DF,I i can get the iq samples,but i use them to caculate the angle of Tx,how to solve it?

I use both nrf52833 boards to do AOA test.But i use thr antenna array board of silab.The board are 16 antennas.I use the NCS version 1.9.1.

The next is my device stcture.

I conple the precedure and the flash the precedure to my board.i can get the IQ samples.But i think it may be damege to my algorithm of angle.

But i can;t solve the this problem.can you help me?

0 user114049 over 4 years ago in reply to user106736

ok,thanks.i know whether other antenna array with thiis nordic board make some influence in IQ values.

as i said some days ago,i find that the IQ sample are so small.

I get the IQ sample from silab as next.

{
	"channel":	18,
	"rssi":	-55,
	"sequence":	173,
	"samples":	[1, -57, -56, -2, -3, 57, 56, 2, 3, -56, -56, -3, -3, 57, 55, 6, 36, 45, -32, -87, -21, -13, -13, -41, 58, -68, -84, 29, 81, -29, -22, 2, -84, -88, 54, 95, -9, -68, -6, 20, -111, 34, 85, -24, -20, -37, 54, 2, 21, 52, -16, -92, -18, -15, -7, -42, 68, -57, -87, 15, 84, -15, -22, -1, -64, -108, 40, 104, 1, -69, -10, 19, -114, 21, 88, -9, -13, -40, 53, 10, 12, 56, 0, -94, -16, -17, 1, -43, 78, -44, -88, -1, 86, 1, -22, -4, -45, -115, 21, 111, 14, -67, -13, 17, -118, 0, 88, 2, -5, -42, 51, 19, 0, 58, 14, -93, -12, -20, 7, -42, 83, -31, -86, -13, 85, 13, -20, -9, -25, -125, 0, 116, 26, -64, -15, 15, -119, -18, 86, 22, 0, -42, 46, 27, -8, 57, 31, -87, -8, -23, 13, -40, 88, -14, -84, -29, 82, 28, -19, -12, -1, -126, -18, 109]

The nrf52833 board with antenna array of silab as next as IQ values.

CTE[DE:86:9B:6D:43:F0 (random)]: samples count 45, cte type AOA, slot durations: 2 [us], packet status CRC OK, RSSI -580

IQ sample content :

sample[0] = I:-2 Q:13

sample[1] = I:0 Q:-14

sample[2] = I:-2 Q:13

sample[3] = I:1 Q:-14

sample[4] = I:-3 Q:12

sample[5] = I:2 Q:-14

sample[6] = I:-3 Q:13

sample[7] = I:2 Q:-14

sample[8] = I:10 Q:-8

sample[9] = I:-12 Q:-2

sample[10] = I:-9 Q:-10

sample[11] = I:0 Q:-3

sample[12] = I:3 Q:-10

sample[13] = I:-4 Q:5

sample[14] = I:4 Q:7

sample[15] = I:-5 Q:3

sample[16] = I:-6 Q:3

sample[17] = I:-28 Q:5

sample[18] = I:2 Q:-4

sample[19] = I:11 Q:3

sample[20] = I:-2 Q:-13

sample[21] = I:4 Q:-13

sample[22] = I:1 Q:-1

sample[23] = I:10 Q:-2

sample[24] = I:-7 Q:-2

sample[25] = I:-4 Q:7

sample[26] = I:-6 Q:-3

sample[27] = I:-6 Q:-4

sample[28] = I:-18 Q:-24

sample[29] = I:4 Q:-1

sample[30] = I:1 Q:11

sample[31] = I:8 Q:-9

sample[32] = I:12 Q:-4

sample[33] = I:1 Q:1

sample[34] = I:6 Q:7

sample[35] = I:-2 Q:-7

sample[36] = I:-9 Q:0

sample[37] = I:0 Q:-7

sample[38] = I:-1 Q:-7

sample[39] = I:11 Q:-27

sample[40] = I:2 Q:2

sample[41] = I:-10 Q:7

sample[42] = I:12 Q:1

sample[43] = I:9 Q:9

sample[44] = I:-1 Q:1

as the err(-11) problem,when i meet ,i will call back to you.

Thanks.