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BOOSTXL-AOA: How to calculate the coordinates of the node to be located by the AOA

Part Number: BOOSTXL-AOA

We intend to use the development board(3x CC2640R2-LAUNCHXL+1x BOOSTXL-AoA) described in the example to build an RTLS and evaluate the positioning of the AOA.

Through the introduction of the example(dev.ti.com/.../node learned that the general triangulation method is used to estimate the target position. At least two different angles of arrival are needed, as follows.

As shown in the figure, but the RTLS built in the example can only get one angle at a time. Did I understand wrong? Do we need additional BOOSTXL-AoA to get another AOA? Or I can just use one BOOSTXL-AoA with two antenna arrays to get the two required angles of arrival at a time?