We continued the work back in Calgary with extended post-processing and analysis from the event day data collection. We were able to extract trajectory and velocity for each antenna as well as heading, pitch and baseline solution from the antenna pair. We compared the real-time solutions with forward and backward post-processed GrafNav and GrafMov solutions (these are NovAtel products from our Waypoint Products Group), and examined the following outputs from the NovAtel system:
From each antenna:
The 3D model shows real-time record of the ALIGN Master receiver's trajectory. The average vertical descent during glide stage after jump is approximately 83.8 miles per hour before the parachute deployment. During chute deployment, there was less than two seconds of satellite signal loss tracking due to antennas pointing to ground as Andrew's orientation changes.
Wingsuit ALIGN Master receiver velocities versus time (figure below - top left): This figure shows the 2D, horizontal and vertical velocities recorded from the ALIGN Master receiver. After chute deployment, the average vertical descent is approximately 18.6 miles per hour.
From the antenna pair:
Wingsuit real-time ALIGN heading measurements versus GrafMov post-processed heading measurements (figure below - top right): This figure shows strong agreement with the ALIGN Master 3D model. Data has been filtered to show ALIGN in fixed ambiguity mode. ALIGN fixed ambiguity data starts approximately 15 seconds after jump and with 11 seconds outage at chute deployment. Note that the ALIGN trajectory is offset at right angles to the jumper's heading as a result of the wingsuit setup and geometry.
Wingsuit real-time ALIGN roll measurements versus GrafMov Post-processed roll measurements (figure below - bottom left): This figure shows strong agreement between ALIGN and GrafMov. There is significant roll at time 183-187 to allow photograph of parachute canopy.
Wingsuit real-time ALIGN baseline measurements versus GrafMov Post-processed baseline measurements (figure below - bottom right): The distance between Andrew's heels is not constant, varying from 35cm to 85cm.
These analyses show a close correspondence between the results of the real-time and post-processed data. For more detailed discussion of these results, see the ANALYSIS tab.