For the most part, flights directly over the water surface have a number of problems. This is an opportunity to collide with birds or boats, as well as lose control of the copter due to a strong gust of wind. However, true professionals know how to catch a good shot, even if they have to send a drone into a field over an open body of water. The article below provides tips on how to take good photos with a quadcopter without losing expensive equipment.
Flying over the surface of the water is not an activity for beginners, but for experienced pilots who have a certain knowledge and experience base that will help in managing in an extreme situation. If there is little experience, but you want to try, then it is better to first master the technique of flight control over the ground. With enough time to fly the drone in a normal environment, the basis for further successful applications of the equipment is being developed. Regardless of the surface over which the device flies.
Flights strictly without VPS
Each DJI quadcopter is equipped with the Vision Positioning System, which translates as “Visual Positioning System”. It is designed to orient the aircraft in space. However, in the case of flying over water, the VPS can read the specular reflection from the water surface, and interpret it incorrectly. Therefore, if the drone is planned to descend to a height of less than two meters, then the visual positioning system must be turned off. So you save the device from a sharp change in flight direction and a possible emergency.
Prepare a photography plan
If we take into account in advance the possible problems associated with the shooting process, then the probability of a quadrocopter falling into the water will be negligible. Imagine the goal you want to achieve during the photo session and think about the options to achieve it. Spending a few minutes adjusting the camera angle and adjusting other settings will greatly improve the quality of your final photos.
Considerably moving away from the aircraft, you seem to get second eyes. Impressions are inexpressible, but it is desirable to always visually observe the position of the drone in space. Once you’ve set the goal of capturing a panorama of the coast, set the aircraft’s maximum distance using the GO4 app. To do this, select the “Enable Max Distance” item and enter the parameter value. The main rule: never set the remoteness of the device more than the range of the control panel.
How to start flying
A drone can be launched over water either from the shore or from a boat. The second option will be less dangerous if the boat is stationary during the launch. If the boat continues to move, then you can start the copter, but you need to do it more slowly.
When taking off from the coastal zone, the aircraft automatically marks the starting position. For orientation in space, a built-in compass and a GPS system are used. However, setting a home point may cause an accident if the aircraft is launched from a ship. During the flight, the boat can change coordinates, and the quadcopter will land right into the water. To change the home point, you need to go to the “left” OSD menu and set the value to “Home Point: Me”. The same value can be selected through the “Main Controller Settings” section in the main menu.
Possible objects on the flight path
The main items that may interfere with falling into the water include the following:
- Frequency interference. These are large cell towers, Wi-Fi points and others. Their signal can mislead the navigation systems of the device.
- Items. Moreover, both natural (trees, bushes, hills) and living (birds).
- Water. Waves and splashes of water at a sufficiently low flight altitude can lead to a fall.
- moving objects. Boats and boats can cause collision and loss of control of the aircraft. It is recommended to gain high altitude when approaching a floating craft.
When such interference occurs, you need to be extremely careful during flight control. If possible, it is better to refuse photography until the onset of a favorable situation.
Automatic flight modes
For flying over water, there is a unique application “Course Lock”. With it, you can get beautiful photos without additional difficulties.
Wind is the enemy of a quadcopter
Gusts of wind not only change the trajectory of the aircraft, but also contribute to the rapid discharge of the battery. If the wind is too strong, then it is better to abandon the flight until the wind subsides. If it is not possible to delay the launch, then be extremely careful not to descend too low, and also take into account the direction of the air currents.