POSPac Processing

How to post-process APX-15 INS data using POSPac

Overview

POSPac UAV is a post-processing software from Applanix meant for airborne vehicle applications. Using CORS reference stations and user rover/base data it can generate a survey-grade smoothed best estimate of trajectory at high frequency for use in many external applications. This page outlines the basic POSPac workflow with UAV-based trajectory data utilizing the Applanix SmartBase virtual reference station module and SingleBase processing modes.

Creating a New Project

1. Open POSPac UAV

2. Click New Default Project

Importing Rover Data

1. Click Import

   

   Importing T04 Data
2. Browse for and select APX files from a single flight

   1. Occasionally, a T04 Base Data file will be recognized in POSPac if the system sat on the ground for extended time before flight operations. This file does not need to be selected when importing data

   

   Selecting Rover Data
3. Click OK

4. Click Import

   1. Ephemeris Data will download, this window will close when complete

5. Visualize and confirm trajectory matches the in-field operations. You can zoom in and out to the trajectory with the mouse wheel, and pan around the trajectory by holding the right mouse button.

   

   Visualizing Trajectory

Selecting Base Stations

1. Click Find Base Stations

2. Click Smart Select

3. Click Smart Base*

   1. If UAS operations are within 30km of nearest CORS network station, Smart Select -> Single Base can be used instead.

Base Station Selection

1. Find Base Stations window will download and import data

   1. If SmartBase was used, this window will close automatically when finished

   2. If SingleBase was used, manually click the Close button after the data has been downloaded and imported

   

   Base Station Import
2. Click Smart Base Quality Check*

   1. If using SingleBase, this step is down automatically after the Find Base Stations window is closed

   

   Smart Base Quality Check
3. Smart Base Quality Check results summary will be displayed when finished

   1. In some instances, you may be prompeted to Re-run the SmartBase Quality Check Processor

   

   SmartBase Quality Check Results Summary
4. Click Run the Applanix SmartBase processor

   1. SmartBase Processor will run

   2. When complete, GNSS QC Statistics will display

   3. Click OK

   

   GNSS QC Statistics

GNSS-Inertial Processing

1. Click GNSS-Inertial Processor

   1. Click All Processing

   

   GNSS-Inertial Processor
2. When GNSS-Inertial Processing is complete, a positional accuracy will be displayed

   

   Position Accuracy

Exporting Trajectory

1. Click the Tools tab

2. Click Export

   1. If desired, change the output directory

3. Choose the desired export format

4. Click Export

Export Processed Trajecotry Data

Saving the Project

1. Finally, save the project file

   1. Save Project As...

   2. Save to the same directory as the export file

   

   Save Project Data
2. Final files

   

   Processed Data File Directory