Compared to civil GPS, what is the serious problem of ADS-B to the drone?
A. It is expensive to access to
B. Its transmissions are not authenticated
C. It is hard to control
D. It is rarely used
查看答案
Which is not the harm of spoofing to the drone?
A. Threating a GPS system
B. Jamming the signal from drone
C. Blocking reception of its navigation signals
D. Causing a pilot to die
What is the solution for the small drone to stay out of the way of other aircraft?
A. GPS system
B. Automatic Dependent Surveillance—Broadcast
C. Spoofing
D. Inertial guidance sensors
Which is the correct explanation of “Achilles’ Heel” in this passage?
A. The name of one part of body
B. A deadly weakness or vulnerable point
C. A name of a character in a story
D. A mistake made by human being
Which is not considered to be the three main communication links?
A. The incoming navigation signal from GPS satellites
B. One or more signals to notify other aircrafts
C. A two-way link
D. A wireless tether
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