Link Loss Procedure - Intel Falcon 8+ User Manual


Figure 3-6. Magnetic field warning
Usually disturbances on the ground come from underground lines and can quickly be
resolved by switching off the Intel Falcon 8+ UAS. Chose a different starting position,
switch the UAS on again and check if the magnetic field warning is not shown again. In
many situations the disturbances are limited to small areas. If this is not possible, you
can:
1. Switch to Height-Mode and take off in Height-Mode to avoid any position
corrections by the system, which might occur unexpectedly in GPS-Mode.
2. Fly to open space and keep Height-Mode activated for at least 20 seconds (it will
help the estimation algorithms to do some movements forward, backward, left and
right).
3. Switch to GPS-Mode in open space. The magnetic disturbance will then be at a safe
distance and the estimation algorithms will be active.
4. Always be prepared to switch back to Height-Mode anytime.
For more informations about the different flight modes see
3.5

Link Loss Procedure

When the UAS has successfully initialized, an appropriate Link Loss Procedure must be
selected each time the UAS is switched ON.
The Link Loss Procedure of the Intel Falcon 8+ UAV is automatically activated when
there is no data link connection between the Intel Cockpit Controller (CTR) and the
UAV. The UAV has a fully redundant data link, meaning that there are two independent
transmitter / receiver connections. If only one of the data link connections is
interrupted, the pilot still has complete control over the UAV. The warning
will be displayed on the Status Display. Only if both links are lost, it will no longer be
possible to control the UAV from the CTR. The warning
and the Link Loss Procedure is activated. This can occur if the UAV is flown too far from
the CTR and/or the antenna panel orientation is not ideal. External influences like
shadowing (see
the data link.
®
TM
Intel Falcon F8+
Figure 3-12. Shadowing) or other (e.g. WiFi) networks can also disturb
User Manual
Since the IMU sensors like accelerometers are needed to
estimate the heading, the compass estimation does not
work as long as the UAV is standing still on the
ground. During start-up the current magnetic field is
compared to the expected magnetic field. If there is a
discrepancy, there will be an uninterrupted acoustic signal.
The Status Display will display the shown warning.
If this warning occurs, never take off from that spot
in GPS-Mode! It might lead to unexpected positional
changes of the UAV.
The warning can be canceled by pushing the ENT button of
the Status Display on the Intel Cockpit Controller (CTR).
IMPORTANT: 
As long as the Intel Falcon 8+ UAV remains switched
on, the canceled magnetic field warning will not be
presented again. So if the Intel Falcon 8+ UAV is
moved to a different location while being switched
on, there will be no warning, even if there is a
magnetic disturbance present.
chapter 3.6 Flight
LINK LOST!
Modes.
LINK WEAK!
will be displayed
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