Heading Alignment Maneuver - GeoCue True View 515 Hardware User's Manual

True View 515 Hardware User Guide
6.

Heading Alignment Maneuver

The heading alignment maneuver needs to be done after takeoff, before flying the mission, and
after the mission prior to landing for each flight. This maneuver is critical for getting accurate
heading corrections for the IMU and will impact the results of the data if not performed.
1. Before takeoff, identify a safe direction to perform the heading alignment maneuver. Avoid
areas with people, bodies of water, and obstacles.
2. After takeoff, once at mission altitude, let the drone hover in place for two seconds.
3. Push the right stick all the way forward quickly and hold until the drone accelerates to 10m/s.
This should take about four seconds. Do not provide any other input. The drone should be
accelerating in a straight line.
4. After reaching 10m/s, about four seconds of forward flight, release the stick and leave it
centered. The drone will quickly stop. Note: Speeds beyond 12-14 m/s may yield poorer
results.
5. Wait two seconds, then use the left stick to turn (yaw) the aircraft about 15-20 degrees, then
wait a second. (This is for safety; it's intended to prevent the drone from returning directly
overhead when you do step 5. Yaw the drone in a direction so that its return path will be clear of
people below, and when it returns, it will be at least 15-20m away, and in front of you.)
6. Pull the right stick all the way back quickly and hold until the drone accelerates to 10m/s. This
should take about four seconds. Do not provide any other input. The drone should be
accelerating in a straight line backwards.
7. After reaching 10m/s, about four seconds of backward flight release the stick and leave it
centered. The drone will quickly stop. Wait at least two seconds after it stops before starting
the mission. Note: Speeds beyond 12-14 m/s may yield poorer results.
8. Fly the mission you have planned.
9. At the end of the mission allow the drone to return to home, but do not let it descend, a final
heading alignment maneuver needs to be done.
10. To take back manual control over the drone.
11. Repeat steps 1-6 again. Make sure that when repeating step 4) that you turn the drone
sufficiently that it will be several meters (>5) away from the takeoff location at the end of its
backwards travel. This is needed so that when returning automatically, the drone will properly
navigate to above the takeoff location before beginning its automatic descent. If you're closer
than 5m, it will likely begin descending without aligning with the original takeoff location
12. After the drone has been stationary for two seconds, hold the (Home) button to begin the
automatic return and landing. Watch the drone carefully to be certain it's landing in the
intended spot. Otherwise, make the necessary adjustments or take manual control to complete
a safe landing.
NOTE: On windy days, avoid starting the maneuver into a headwind, as the drone may
not be able to achieve high enough accelerations. Try doing the maneuver crosswind if
possible.
35 True View 515 Hardware User Guide 10/26/2021