Aerospace & Defense Technology - May 2021 - 21

Anti-Drone Radar

Developing New

Anti-Drone Radar
Technology

T

oday's drone threat calls for
small and lightweight radars
with excellent detection range
and coverage. That's already
tricky, as most radars do either one or
the other. In the planning of IRIS, a new
drone radar system, Robin Radar Systems pledged not to make that compromise. That is a steep task from a technical perspective, without throwing in a
small and lightweight form factor and
full coverage into the mix. IRIS was designed to be easily lifted, transported
and deployed and redeployed as
needed, which is pretty unusual for
most radar systems. Starting from
scratch, that gave Robin Radar's technical team only two and a half years to
transform an almost blank sheet of
paper, except for a few high-level specifications, into a working product.
The big question is, how do you make
that happen?

The amount of birds populating the
sky means that discrimination between
birds and drones is an absolute must for
any radar system worth its salt. This is
where micro Doppler comes in-the return signal of any target is frequency
shifted in accordance with the relative
velocity of the target. That results in

the well-known 'Doppler effect'. This
also contains all moving articulations
on the targets, such as props. Our processing then decomposes the return signal into its separate Doppler components, in order to detect and distinguish
the high velocity spin of propellers.

Don't Reinvent the Wheel
The first thing to ask was: " Can it
be bought off the shelf? " The answer, in this case, was a clear no.
And definitely not at a reasonable
price, so it was up to us to develop
a purpose-built radar to reach
upper sensitive balance.
The second question was: Can existing company technology be used?
That was where we were able to
speed things up. We decided to implement tech from our existing
ELVIRA drone radar, which applies
micro Doppler, and our MAX bird
radar for its antenna and processing capabilities.
Robin Radar's roots are in bird
detection; in fact, the company
name, " Robin " is an acronym that
stands for: Radar OBservation of Bird
INtensity. Detecting drones is actually
much less of a challenge. Classifying
them as drones, however, is another story.
Aerospace & Defense Technology, May 2021

www.aerodefensetech.com

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Aerospace & Defense Technology - May 2021

Table of Contents for the Digital Edition of Aerospace & Defense Technology - May 2021

Aerospace & Defense Technology - May 2021 - Intro
Aerospace & Defense Technology - May 2021 - Sponsor
Aerospace & Defense Technology - May 2021 - Cov1
Aerospace & Defense Technology - May 2021 - Cov2
Aerospace & Defense Technology - May 2021 - 1
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Aerospace & Defense Technology - May 2021 - Cov3
Aerospace & Defense Technology - May 2021 - Cov4
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