What Interferes Drone Signal

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What Interferes Drone Signal The rampant flying
of unauthorized drones leads to the emergence of
anti- drone market which is now on the right
track. The jamming technology aiming to
interfere with and counter unauthorized flying
drones is necessary, when drones are used
maliciously in civilian and military
fields. Professionals in the anti-drone industry
said that the current anti-drone technology is
still in the exploratory stage. The radio
hijacking technology is difficult to achieve due
to the encryption of radio signals by various
drone manufacturers, and the hacking technology
is not easy to commercialize as it has a high
threshold. Therefore, the currently anti-drone
technology is mainly about jamming and
blocking. Anti-drone system jams a drone by
blocking its uplink flight control channel and
satellite positioning channel, making the drone
loses flight control commands and satellite
positioning information. Then the drone will not
be able to fly normally and it will return, land
or crash according to its design. GPS relies on
medium orbit satellites. In laymans terms, the
signal reaches the earth surface after tens of
thousands of kilometers, which is already very
weak. So it is relatively easy to jam GPS
signals when the drone is very close to the
defender. If you want to deceive the drone, you
need to use more complex methods to simulate GPS
satellites, which will be much more
difficult. Signal Interference At present, to
control the drone, people mostly use radio
communication technology. This kind of
technology transmits high-power interference
signals to the target drone and suppresses its
control signal. Thus, the drone can be forced to
land or return. The jamming gun with an
electronic jammer on its frame transmits
full-frequency-band jamming signal to the drone,
whenever its triggered. The jamming signal will
make the drone be out of its operators control,
and automatically land on the ground without the
operators control signal. Once the drones
signal is in a state of confusion, it usually has
3 options drop to the ground, return to the
operator, or descend steady. The ND-BD003
Handheld Anti-Drone System, designed by NovoQuad,
is one of the anti-drone guns like this. By
integrating detection, jamming and recording all
in one, the system is frequently used in a
variety of low-altitude defense areas to assist
combat missions. GPS Spoofing At present, under
normal circumstances, most consumer-grade drones
prefer GPS navigation for flight control, while
civilian GPS signals are unencrypted,
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which leaves room for GPS spoofing. The main
principle of GPS spoofing is to send false
geographic location coordinates to the drones
control system, thereby controlling the
navigation system and inducing the drone to fly
to a wrong place. GPS signals can be generated
by generators, or pre-recorded and then
reproduced. The strongest GPS signals are always
the first one received by the drone. As long as
the artificial GPS signal on the ground is strong
enough, it can cover the real GPS signal from
space, thereby deceiving the drones GPS
receiving module.