Assured Positioning Navigation and Timing (APNT)
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:
Equivalent to someone in Los Angeles receiving the light from
a 60W light bulb in New York
10W GPS jammer range:
Suspected GPS spoofing incidents since
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
Leverages latest reference database,
including 3D terrain
*Proven through successful combat mission operations
The ADEPT approach
Video Image Sensor
Data Link Ranging Sensor
Bounds position error using both
Calculate joint solution based on
relative ranges between
3D Geodetic Position
Nonlinear filter algorithm for combining inputs from all available sensors
Any platform, any sensor, anytime
One code base across
Collaborative and Signal of
using RF signals
filter sensor fusion
Across all domains of battle
Squad members on foot
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