Line of sight refers to the straight path that can be drawn between an observer and an object they are looking at. This concept is important in various fields, including telecommunications, architecture, and navigation, as it affects visibility and communication. If there are obstacles, such as buildings or trees, they can block the line of sight, making it difficult to see or connect with the intended target. In telecommunications, line of sight is crucial for signals transmitted between antennas. For example, satellite dishes need a clear line of sight to the satellite to receive signals effectively. Similarly, in drone operation, maintaining a line of sight with the drone is essential for safe and effective control.