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and LoRa Alliance
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GEOLOCATION
WHITEPAPER
Figure 5-14 presents instantaneous HDOP influence
of the network layout on geolocation accuracy.
Prior to gateway deployment, static GDOP should
be assessed as explained in section 4.3, taking
into account the entire set of gateways available to
the deployment area. Figure 5-15 illustrates GDOP
obtained from a stationary end-device (in red) in the
deployment area.
For the same stationary end-device, Figure
5-16 presents the end-device's measured radio
environment (mean RSS) vs. end-device distance
from gateways. Clearly for locations outside the
corridor formed by the dense gateways, HDOP
values are much higher than those obtained for
locations aligned with the gateway corridor.
Figure 5-14: Instantaneous HDOP–Fixed Device,
Downtown Paris
Figure 5-15: GDOP Estimate of a Stationary
End-device (Red) Within the Gateway
Deployment
Figure 5-16 HDOP Influence vs. End-device Position From GWs
