cc26x2r1 AOA 问题

你好！

在使用两块launchpad做AOA 和TOF测试时（master + boostxl AOA），发现AOA和TOF数据波动很大，请问是什么原因？

Viki Shi：

请问你的SDK版本是什么？

user6225182：

回复 Viki Shi:

simplelink_cc13x2_26x2_sdk_3_30_00_03

Viki Shi：

回复 user6225182:

“波动很大”能否上图？随着天线的切换数据是会快速变化的，当然也可能是环境问题，参考这边解释：e2e.ti.com/…/861554

user6225182：

回复 Viki Shi:

两块开发板固定不动，角度和距离数据一直跳动。什么原因？

Viki Shi：

回复 user6225182:

这个是正常的，我们的AOA例程只是个演示demo，数值只要有变化即可，确切的值受环境影响比较大，需要后续终端开发时进行完善。
The environment which you perform the measurement matters a lot, if you are in an open space with no metal around you, then you should see better result than this.

The result can be affected by multi-path reflection which creates a false angle of arrival.
The best way to use this demo is to
1. test it in the well controlled environment(antenna chamber) and analyzing the I/Q data.
2. Design your own filter (the current one in the BLE STACK is only moving average). You can add filtering base on standard deviation or even use the rssi value to decide to trust the data or not.
3. Once you are done with your own filter, then you can bring it to outdoor testing and check how good your filter is.