# Improving Human Ground Control Performance in Unmanned Aerial Systems
## 4 The Study  
The study presents uses of the interface to simulate a scenario in which detection of an area takes place by five drones and a transmission of relevant information to the ground control station where a team of operators is present. The aim of this study is to assess the effects of TSA on team performance.  
A team member controls the drones on the map. The second team member checks the drone's battery level.  
If the drone is discharged below 30%, it is indicated on the display with a notification on the map \"Drone almost discharged\". If the drone has a 10% battery status the drone is immediately homing. This is indicated on the display with a \"Drone return to takeOff\" notification.  
This task is interdependent as the higher the drone battery rate, the higher the success rate of the mission.  
The drone batteries are limited and require management during the mission.  
Two independent variables were considered, referring to display _sharing_ and _event_ occurrence, respectively. In the \"Shared\" condition, the teams had the screen shared on the MultiTouch wall so that both team members could see the interface which represented the factors that vary in the simulation for their specific task. In the \"Non-shared\" condition, the teams had screens that were not shared and had to see all the factors of the simulation, without distinction of task.  
In the \"No event\" condition, the mission occurred normally. An unexpected event occurred on the mission in the \"Event\" condition. In the simulation scenarios that signaled an unexpected event, this is the drone battery without load.  
During this activity, the communication of the team members was also evaluated. [PERSON] et al. (1995) proposed that group processes are related to TSA. For example, team members can exchange information to develop TSA. To test this idea, team communication was analyzed. Specifically, the frequency with which team members asked questions about the status of the mission was measured. The questions were speculated to provide a good indication of the extent to which team members tried to improve their SA through communication with the team.  
The following hypotheses were derived. In any case, the performance was measured by the success of the mission and of the frequency of communication. [PERSON] (1995) predicts that poor AS will lead to poor performance, and [PERSON] et al. (2001) provides an empirical demonstration of this. A shared view is expected to enhance TSA by providing all team members with direct access to the complete plant status. Therefore, it is expected that:  
**Hypothesis 1:**_Operator's **performance** are higher in the \"Shared\" condition than in the \"Non-shared\" one:_  
**Hypothesis 1.1:**_In normal conditions, the **performance** is higher in the shared setting compared to the non-shared setting._  
Since, Sebok observes that SA is reduced when unexpected events occur (see [16]), we are interested in exploring which setting can better deal with it.  
**Hypothesis 1.2:**_In case of unexpected events, the **performance** deteriorates more in the non-shared setting compared to the shared setting._