Whitepaper

WP001(v1.0)2016-08-22
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3 Typical application examples
3.1 Automatic collision avoidance for UAVs
In recent years, with the increasing demand of UAV market, a large number of unmanned aerial
vehicles encountered flying obstacles in the air, resulting in the occurrence of flight difficulties,
as shown in Figure 3. Thus collision avoidance has been one of the key challenges in restricting
the development of unmanned aerial vehicles. Millimeter-wave radar can detect five times as
far as that of ultrasonic. Moreover, due to its high frequency and anti-interference ability, it has
become the standard accessories in UAV. Furthermore, millimeter-wave radar has the
advantages of being small size, high resolution and low power consumption, which could fully
meet UAV's demanding requirements about the size and power consumption. SP25 is an ideal
choice for the personal aerial photography unmanned aerial vehicles and other consumer-level
UAV in low-altitude operation.
Figure 3 UAV "air crash"
The installation location for SP25 is flexible, which is applicable to various types of UAV
platform, directly connecting to the unmanned aircraft flight control system through the UART
serial port. At the same time, according to the application needs, by installing one or more
modules, it can extend the flight detection perspective, radiate low-power electromagnetic beam
to the surrounding, and capture the echo signal to calculate the obstacle distance. Therefore it
can guide the UAV flight control system to quickly make adjustments to the direction of flight.
When the distance is beyond safety, the collision avoidance system (sensing-avoidance system)
can basically replace the operator to complete the relevant calculations, and automatically
trigger to avoid other aircraft movements.