spoofed, and (b) in the event of a signal loss due to jamming, why the signal is
lost.
Also, if a normally strong GNSSsignal becomes weakened, BroadShield's
algorithms are capable of discerning a jamming event from natural events caus-
ing the signal to weaken.
Note: For an effective jamming detection, and – to some extent –
spoofing detection, a good antenna placement with optimal sky
view resulting in a high signal-to-noise ratio is essential. A strong sig-
nal is required to discern between normal signal fluctuations and a
non-natural divergence of signal strength.
BroadShield Requirements
In order for BroadShield to work on your VersaSync system, the following require-
ments must be met:
1. The optional BroadShield software license needs to be enabled by applying
the OPT-BSH BroadShield license key. For more information, contact your
local Safran Sales Office. To determine if BroadShield has been activated on
your VersaSync unit, navigate to TOOLS: SYSTEM > Upgrade/Backup. The
center panel System Configuration will list the Options installed in your
unit.
Activating the BroadShield License
If you have purchased the BroadShield license key and now want to activate it,
please follow the instructions under "Applying a License File" on page292.
To confirm that BroadShield has been activated on your VersaSync unit, navigate
to TOOLS: SYSTEM > Upgrade/Backup. The center panel System Configuration
will list the Options installed in your unit.
Enabling/Disabling the BroadShield Service
The Broadshield service can be run in two operating modes:
BroadShield only: In the event jamming or spoofing is detected, VersaSync
will emit a Major Alarm, however it will continue to consider the GNSS ref-
erence as valid, i.e. it will NOT go out of sync.
Auto Sync Control: In the event jamming or spoofing is detected, Ver-
saSync will emit a Major Alarm AND it will go into Holdover mode.
To configure these settings:
1. Navigate to TOOLS: SYSTEM > Broadshield.
2. In the BroadShield Service panel on the left, configure the desired setting:
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CHAPTER 3 • VersaSync User Manual Rev. 12
3.3 Managing References
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