|NAVAL ORDNANCE AND GUNNERY
VOLUME 2, FIRE CONTROL
RADAR AND OPTICS
| C. Types of Radar Equipment
16C1. Search radar
Search radars used for general navigation and early warning nets do not require great precision in ranging and bearing, but do require the ability to locate targets at fairly long ranges. Therefore, they are normally designed with high power, wide beam angle, and fairly long pulse widths. Their target resolution (ability to determine bearing and range accurately) is within approximately ±2° and ±200 yards.
16C2. Fire-control radar
Fire-control radars require only the range necessary for controlling the guns with which they are associated. However, they also require precision target resolution. To accomplish this they are designed with low power, short pulses, and narrow beam angles. Their primary purpose is to furnish to the fire-control systems accurate bearing and range of targets in order that the computers and other components of a gun-laying system may be fast, effective, and efficient.
16C3. Fighter-director radar
Fighter-director radars are specifically designed for the control of friendly aircraft, particularly at night or during heavy weather. With this equipment control personnel are able to direct friendly aircraft effectively in air-to-air battle when the friendly aircraft cannot see the enemy. These radars are designed with great power and maximum target resolution. They may also be used as search and special early warning equipments.
16C4. Airborne radar
Radars for aircraft are of the same general types as land or shipboard radars except they are physically much smaller. Both search and fire-control radars are successfully used in aircraft.