Samples IQ

RE: Samples IQ

Simonr — Wed, 17 Apr 2024 08:06:03 GMT

Hi Antonio

Unfortunately, we will not provide any support in how to do the AOA algorithm to get XY location values. You can check out this page for information on the various formulas used to translate IQ data between polar and rectangular form. Nordic will not provide a Direction Finding algorithm. This will have to be done on your end or by a third party. UBlox for example provides a full solution with both HW and AoA algorithm for customers using their modules.

Best regards,

Simon

RE: Samples IQ

Antonio Ramos Morales — Tue, 16 Apr 2024 09:38:15 GMT

Yes I am using it

esta de Insight SiP ,

 try changing the antenna in a circle ,12 ant

[{ "gateway":"ac233fc00001", "timestamp":"2021-01-08T05:38:05.443Z" },{ "mac":"c6c504030201", "timestamp":"2021-01-08T05:38:05.817Z", "no":2, "rssi":-69, "raw":"02010605ff3906cafb0809416f412d746167", "aoa":{ "frequency":2402, "iq":[-97,175,-173,-111,137,-165,168,145,-147,138,-135,-167,169,-143,131,171,-75,-194,66,235,-40,-249,34,228,2,-202,-16,211,36,-190,-36,170,141,-245,-86,180,117,-176,-149,146,178,-178,-204,132,201,-119,-194,83,204,-78,-185,14, 181,-27,-266,-29,201,23,-224,-38,186,89,-229,-94,190,149,-198,-118,134,171,-132,-177,86,165,-103,-157,73,254,-44,-200,42,224,-6,-205] } }

 I don't know if you would have any part of the code to get the angle and the xy position of the tag from this data, if I could abuse your wisdom to be able to make the code, I am using python....thanks

RE: Samples IQ

Simonr — Mon, 15 Apr 2024 12:38:22 GMT

In the future, please write tickets and replies in English, as translating using Google Translate doesn't always result in something that makes sense on our end, so some guesswork is made to understand your question and answer you here. Let me know if I got something wrong:

You want to know which IQ samples correlate to which antennas on your array, correct? First off, what antenna array are you using, this one from Insight SiP or some other array?

The first antenna in your switch pattern will be the reference antenna. Then after the reference period, all the other antennas will be used in order from left to right starting with the one after the referene antenna (2 in your case). Is there a reason you've set antenna 2 both as the reference antenna and as the next one in line? And is it correct that your antenna array consists of 13 antennas, or do you have less/more than that?

Best regards,

Simon