GNSS post-processing offers many advantages over real-time operation. Precise real-time GNSS using RTK requires a robust data link for GNSS corrections data. If a real-time solution is not required, the raw GNSS measurement data can be collected in the field and processed post-mission to provide a precise position and velocity solution. Post-processing allows for simplified real-time system operation without the need for real-time telemetry and allows lower-cost receiver hardware to be used.
GNSS/INS post-processing allows for greatly reduced solution drift when operating with limited GNSS availability. Combining and smoothing the trajectories computed forwards and backwards in time results in an improvement in the position, velocity and accuracy available over what is available in real-time.
NovAtel post-processing options include:
| GrafNav/GrafNet® | GNSS-post-processing and network adjustment software package that supports most GNSS manufacturer data formats |
| Inertial Explorer® | Expands on the powerful features of GrafNav/GrafNet by adding support for tightly-coupled GNSS/Inertial processing |
| GrafMov | Moving baseline processing and heading determination |
| GrafNav Lite | Scaled-down version of GrafNav/GrafNet, processing single frequency carrier phase and code-only (DGPS) data |
| GrafNav Utilities | Mission planning and GPS data and coordinate/datum conversion |
|
Features |
GrafNav Utilities |
GrafNav Lite |
GrafNav Static |
GrafNav /GrafNet |
GrafMov |
Inertial Explorer |
|
Float Static |
|
|
|
|
|
|
|
Float Kinematic |
|
|
|
|
||
|
Fixed Integer Static (Fixed Solution) |
|
|
|
|
||
|
Fixed Integer Kinematic (KAR) |
|
|
|
|||
|
Dual Frequency |
|
|
|
|
||
|
Single Point |
|
|
|
|
|
|
|
Moving Baseline |
|
|||||
|
GPS Azimuth Determination |
|
|||||
|
IMU Data Processing |
|
|||||
|
Kinematic < 1 second Data Rates |
|
|
|
|||
|
Mission Planner |
|
|
|
|
|
|
|
GPS Data Conversion |
|
|
|
|
|
|
|
Coordinate/Datum Conversion |
|
|
|
|
|
|
|
GPS Date Logger |
|
|
|
|
|
|
|
Download Service Data |
|
|
|
|
|
|