Which scan type is used in the search and acquisition mode of RADAR on fighter/interceptor aircraft, sweeping back and forth in front of the aircraft?

The correct scan type used in the search and acquisition mode of RADAR on fighter/interceptor aircraft that sweeps back and forth in front of the aircraft is the raster scan. This method involves moving the RADAR beam in a systematic pattern, typically resembling a grid or raster format, covering a designated area effectively. This scanning technique allows the RADAR system to efficiently search for and acquire targets by thoroughly illuminating the airspace in front of the aircraft, maximizing the chances of detecting incoming threats or targets.

This approach is particularly advantageous for fighter/interceptor missions as it ensures comprehensive coverage of the surrounding space, providing situational awareness and the ability to track multiple targets. The raster scan's back-and-forth sweeping motion helps in gathering data on various potential contacts, giving pilots the necessary information to make tactical decisions.