What is a major advantage of using semi-automatic CLOS in missile guidance?

The major advantage of using semi-automatic Command Line of Sight (CLOS) in missile guidance is that the operator has continuous control over the missile. This method allows the operator to adjust the missile’s trajectory in real-time, providing the flexibility to compensate for changes in target position or movement. By maintaining manual control, the operator can make instantaneous decisions based on the evolving battlefield scenario, which is particularly valuable in dynamic environments where targets may change unpredictably.

Additionally, this continuous control enhances the missile's engagement efficiency since the operator can fine-tune guidance commands, increasing the likelihood of a successful hit, especially against agile or maneuvering targets. This advantage is contrasted with fully automated systems, where the missile can follow pre-programmed instructions without the ability to make real-time adjustments based on sensory inputs.

In summary, the aspect of continuous operator control is what sets semi-automatic CLOS apart, allowing for more responsive engagement with targets in complex situations.