Which component is essential for the graphical display of target data?

The graphical display of target data is primarily the function of the display unit. This component takes the information processed by the radar sensor and signal processor and renders it in a visual format, allowing operators to interpret the data effectively. The display unit provides a user-friendly interface where target locations, trajectories, and other relevant information can be viewed in real time or as historical data, making it crucial for effective decision-making in the field.

The other components play important roles in the overall functionality of the firefinder radar system, but they do not directly handle the visual representation of target data. The radar sensor collects data about incoming projectiles, the control panel allows operators to manage and send commands to the system, and the signal processor interprets the data from the radar sensor. However, without the display unit, the information collected and processed would not be presented in a manner that is immediately understandable to the operators.