XPLR-AOA-3 - User guide
UBX-22006906 - R07 u-connectLocate software Page 29 of 46
C1-Public
6 u-connectLocate software
u-connectLocate software can track a certain number of tags and report their angles in +UUDF events
over the UART connection. The software employs an algorithm to detect the direction or angles of a
moving tag. The software runs on the NINA-B411 module, which is connected to the antenna array on
the ANT-B10 board.
As the antenna array on the board detects the Constant Tone Extension (CTE) advertised in a tag
beacon, the algorithm calculates the angles in two dimensions from the anchor to the tag. The
calculated range of the angles is -90 to 90 degrees.
For the purpose of simplifying the graphical representation of tag angles in a 3D diagram, the
complementary angles (angle1' and angle2') on which the reported angles (angle1 and angle2) are
calculated are shown in Figure 27. The angles shown are between the y-axis, z-axis and the tag
gradient from the origin point. The white dots represent the antenna board, and the x-axis represents
the normal orientation of the board.
Figure 27: 3D space diagram – showing complementary angles on which the reported angles are based
u-connectLocate reports two angles, “angle1” and “angle2”, where:
• angle1=90°-angle1'
• angle2=90°-angle2'
Note that “angle1” is positive from the positive x-axis to negative y-axis but is negative from the
positive x-axis towards the positive y-axis. Conversely, “angle2” is positive from the positive x-axis
towards the positive z-axis but is negative in going from the positive x-axis toward negative z-axis.
When the tag is moving along the x-axis, the two reported angles should both be zero.
⚠ Upgrading the software resets all settings to factory default.
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