Assured Positioning Navigation and Timing (APNT)
Assured Positioning
Navigation and Timing (APNT)
How Leidos provides a mission-critical capability
For APNT data in military operations,
the stakes are high.
Mission success in a contested environment depends on APNT data
that is both accurate and continuously available.
Precisely locating a vehicle, projectile,
or squad member can be essential to
completing a critical mission.
Even a small navigation error can
compromise the ability to avoid threats,
find targets, and maintain safety.
Missions aborted due to lack of position
data also have tactical and cost impacts.
Relying on GPS alone can leave
critical missions suddenly blind.
Geographical conditions like terrain, structures, and foliage can
cause disruption, but GPS can also be distorted or jammed by
adversaries as part of a hostile action.
GPS signal strength at Earth's surface:
10
-16
W
Equivalent to someone in Los Angeles receiving the light from
a 60W light bulb in New York
1
10W GPS jammer range:
94.2 miles
2
Suspected GPS spoofing incidents since
February 2016:
9,883
3
Critical operations require precise and reliable positioning and
navigation awareness, and GPS can't do it alone.
Leidos Assured Data Engine for
Positioning and Timing (ADEPT)
Leidos developed ADEPT to overcome these challenges. A resilient
software solution to APNT, ADEPT continues operating even when
GPS goes down, using machine learning and non-traditional
sensor data to continue to provide accurate navigation.
Leverages software developed under
multiple DARPA projects
Functions with or without access to GPS
Uses onboard or low SWAP-C sensors
and processors
Leverages latest reference database,
including 3D terrain
Proven Technology
Readiness Level
9
*
Supported
50+
field
demonstrations
Demonstrated accuracy
<10
-meter root-mean-square
(RMS)
*Proven through successful combat mission operations
The ADEPT approach
Video Image Sensor
Data Link Ranging Sensor
GPS Sensor
Vision Aiding
Bounds position error using both
image-to-reference and
frame-to-frame matching
Collaborative Navigation
Calculate joint solution based on
relative ranges between
platforms
3D Geodetic Position
Measurements
Collaborative 3D
Position Measurements
Reference
Databases
Sensor Fusion
Nonlinear filter algorithm for combining inputs from all available sensors
Sensor Anomoly
Detection
Nonlinear
Measurements
Linear
Measurements
Linear/Nonlinear
Cross-Coupling Effects
State/Uncertainty
Output Generation
True position
ADEPT
GPS/INS
Any platform, any sensor, anytime
One code base across
all domains
Hardware agnostic
Plug-and-play
sensor interfaces
Advanced vision
processing
Collaborative and Signal of
Opportunity navigation
using RF signals
Multimodal particle
filter sensor fusion
Across all domains of battle
Aircraft
Unmanned vehicles
Guided munition
Squad members on foot
Naval vessel
Whether on the ground, in the air, or at sea, ADEPT rises to
the challenge, providing reliable navigation in GPS-denied
environments and supporting mission success.
Learn more and contact the ADEPT team at
leidos.com/APNT
1
GPS.gov
2
NextGov.com
3
BBC.com
Delayed Measurement
Handling
