BOOSTXL-AOA: Questions Regarding Accuracy

Hi Rohit,

You can use the rtls_ examples in the CC2640R2 SDK to get started. Also refer to the users guide: 

http://dev.ti.com/tirex/explore/content/simplelink_cc2640r2_sdk_3_20_00_21/docs/blestack/ble_user_guide/html/ble-stack-3.x-guide/localization-index.html#rtls-toolbox 

You will also find these SLAs fruitful:

http://dev.ti.com/tirex/explore/content/simplelink_academy_cc2640r2sdk_3_20_01_00/modules/blestack/rtls_intro/rtls_intro.html#introduction 

Hello,

Thanks for the response. I read through the documentation you provided and while it was helpful I still have the following questions:

Do you have a formula for relating degrees of AoA accuracy to the number of antennas used?

We are looking to measure distance with at least .5m accuracy for a distance of 10m between devices. Do you have a formula for calculating the accuracy needed for this using AoA? I have some preliminary calculations but a definitive formula from Ti would be helpful

Can Ti ToF be run on the 22640 without the BOOSTXL-AOA add-on?

Thanks,

RJ

Regarding the question “Do you have a formula for relating degrees of AoA accuracy to the number of antennas used?”, couldn’t we use the formula provided in this TI reference? www.ti.com/.../swra554a.pdf I understand the application is very different but I am assuming the AoA estimation based on measuring the phase difference between the different signals received at the different antennas is the same concept. If this is not the case, we’d appreciate a clarification. According to the document we need 2/phi antennas to achieve phi resolution in radians. This means an 8 antennas array will only give us a maximum of about 14 deg of resolution. Would you agree? Thanks!