UBX-21004616 - R02
Contents
Page 9 of 28
C1 - Public
3
XPLR-AOA anchor nodes and tags
3.1
Introduction
Both XPLR-AOA-1 and XPLR-AOA-2 explorer kits include both Bluetooth anchor nodes and tags.
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Although this chapter generally describes these nodes and tags in the context of the XPLR-AOA-1
direction finding system, the concepts it describes are equally applicable to the XPLR-AOA-2
indoor positioning explorer kit. For information about the XPLR-AOA-2 positioning engine, setup,
and configuration, see also the indoor positioning application note [2].
3.2
Overview
u-blox direction finding solutions are comprised of C211 anchor nodes C209 tags, as shown in Figure
6. See also
. u-blox direction-finding solution supports the
methodology.
C211 anchor nodes are based on NINA-B4 modules that include support for direction finding.
Anchor nodes are based on NINA-B411 u-connectXpress functionality, whereas C209 tags are based
on NINA-B406 open CPU architecture. For more information about these short-range Bluetooth
modules, see also the respective data sheets [13][14] and product pages [2].
Figure 6 shows several anchor nodes and a host that uses the combined information from the anchor
nodes to calculate the position of the tag. For simple direction finding one anchor node is sufficient.
Figure 6: XPLR-AOA direction-finding solution showing four anchor points tracking a single tag
