7.2 Survey Planning

In mission planning user can select the survey pattern option from flight type screen.
Survey Plan
The survey pattern feature allow user to specify complex flight patterns using a simple graphical UI. User can specify the polygon as well as the specifications for survey pattern plan and camera settings appropriate for creating camera images. The flight will stop at each image location prior to taking the image such that the vehicle is stable while the image is taken. User can drag the polygon waypoints to a new location. The survey pattern is created as polygon waypoints dragged.
User can select flight type as Survey pattern. Selecting a survey pattern from option generates a survey pattern based on the altitude and known camera specification.
User can drag a polygon waypoints to get a survey area as per user’s requirements.
  • User can change the altitude of survey pattern planning.
  • User can set a turnaround angle to the survey pattern’s path line on the enter key. By default, turnaround angle is 0.
  • Turnaround distance is an amount of additional distance to add outside the survey area for flight turnaround. Users can set the turnaround distance to the survey pattern by entering the required value in the given text box. By default, turnaround distance is 0.
  • User can set the front overlapping, side overlapping value to the images also in the respective text boxes. By default, the front overlap value is 0. Image overlapping overlap occurs between each image.
Flight Statistics

Flight Statistics:

  1. 1.
    The flight statistic section shows the calculated survey area and planned photo count marked with red color.
  2. 2.
    Camera: Camera triggering behavior depends on the camera/camera settings. Users can select an existing camera or a custom camera.
Flight Statistics
Custom Camera Settings

Custom Camera:

Selecting the custom camera option allows user to specify the settings for a new camera in a similar way to the known camera. Users can set the following values in the respective text boxes.
The camera-specific settings are:
1. Sensor width/height: The size of the image sensor of the camera.
2. Focal length: The length of the camera lens. Focal length is determined by a combination of sensor size, effective distance from mirrors within the lens, and glass curvature. Drone cameras come with a variety of lens options that range in effective focal length from 10mm to 1200mm. Long focal lengths are typically associated with lower resolution and are utilized for visual inspections, not surveys or 3D generated asset inspections.

Cross Grid:

This option is available in AeroGCS for more coverage of the land. The time required to complete the plan will be obviously higher than the normal survey plan. But it covers almost all the land. On enabling this option, the survey distance, survey time and image count will be increased as indicated by red marking in the image below:
Cross Grid

Add Rally Points

This is an additional security provided for landing the drone safely and smoothly.
Rally Points added
The violet-colored points in the above image show the rally points. These are useful in emergency situations to land safely to the closest rally point instead of moving home at a far end.

Survey Statistics

AeroGCS KEA 2.2 provides Survey Statistics as shown in the following image.
Survey Statistics
Survey Statistics includes the parameters such as:
  • Survey Area: Area covered by the survey plan in Sq. meters. This area will change with changes in the boundary points. The user can stretch or shrink the points manually and adjust the area as per requirement.
Changes in the Boundary Points
  • Survey Distance: Total distance to be traveled by the drone on the survey plan is nothing but the Survey Distance. It also depends on the stretching or shrinking of the boundary points as shown in the above two images.
  • Survey Time: Survey Time is the total time taken to complete the flight on the selected survey plan. It depends on the area of the survey plan.
  • Image Count: The Number of images to be captured by the camera is considered as an "Image Count". The image count increases with an increase in the area of the survey plan.

Turn Angle

Turn Angle
The user may change the angle of turning a drone. All the parameters displayed in survey statistics will vary as the turn angle changes. The value of turn angle change will be displayed on right-hand side of the turn angle bar. Accordingly, the user may see the changes in the survey plan as shown in the above image.

Fence:

Mark the points for providing the fence to the drone. It is mandatory for all types of flight plans.
Watch the video for getting more insights about the survey mission plan.