Aerospace & Defense Technology - May 2022 - 4

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Improving Low-Altitude
UAS Navigation
A
startup is testing a new
drone-based delivery application
for when the aircraft
loses its global positioning
system (GPS) signal. The vehicle flies
off course. Soon, it loses communication,
cannot return home, and can't
achieve its mission.
An Air Force unit conducts a risk
assessment for an upcoming unmanned
aerial system (UAS) mission. They know,
based on past experience, that global
navigation satellite system (GNSS) signals
are constantly changing, but don't
have a baseline of what is occurring due
to terrain or buildings, and what is
being caused by the enemy.
An eVTOL aircraft is flying cargo and
personnel in urban and suburban settings
but can't operate with automation
because the GPS signals seem to be ok
and then lost at different times and locations.
Even the downtown vertiport has
occasional issues delaying departures
and arrivals. Could it be jamming? Or is
something else going on?
All these scenarios share some common
themes: GPS/GNSS is the most
common source of aircraft navigation
and at low altitudes it can be unreliable.
Is it possible to make GPS/GNSS more
reliable?
As many amazing things as civil and
military organizations now do with
GNSS, users continue to bump up against
its most frustrating limitation: at lower
altitudes, you just can't rely on it. Engineers
have been working on this issue for
years, but the truth is, mitigating GNSS
4
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ADT Feature 1 - UAV Navigation Systems 0522_1.indd 4 Intro
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Aerospace & Defense Technology - May 2022

Table of Contents for the Digital Edition of Aerospace & Defense Technology - May 2022

Aerospace & Defense Technology - May 2022 - Intro
Aerospace & Defense Technology - May 2022 - Cov 4
Aerospace & Defense Technology - May 2022 - Cov 1
Aerospace & Defense Technology - May 2022 - Cov 2
Aerospace & Defense Technology - May 2022 - 1
Aerospace & Defense Technology - May 2022 - 2
Aerospace & Defense Technology - May 2022 - 3
Aerospace & Defense Technology - May 2022 - 4
Aerospace & Defense Technology - May 2022 - 5
Aerospace & Defense Technology - May 2022 - 6
Aerospace & Defense Technology - May 2022 - 7
Aerospace & Defense Technology - May 2022 - 8
Aerospace & Defense Technology - May 2022 - 9
Aerospace & Defense Technology - May 2022 - 10
Aerospace & Defense Technology - May 2022 - 11
Aerospace & Defense Technology - May 2022 - 12
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Aerospace & Defense Technology - May 2022 - 48
Aerospace & Defense Technology - May 2022 - Cov 3
Aerospace & Defense Technology - May 2022 - Cov 4
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