MULTI-DIMENSIONAL RADAR

track (such as an antisubmarine barrier or a search and rescue pattern). Together, surface- and air-search radars provide a good early-warning system. However, the ship must be able to determine altitude to effectively intercept any air target. This requires the use of another type of radar. MULTI-DIMENSIONAL RADAR The primary function of a multi-dimensional radar is to compute accurate ranges, bearings, and altitudes of targets detected by an air-search radar. This information is used to direct fighter aircraft during interception of air targets. The multi-dimensional radar is different from the air-search radar in that it has a higher transmitting frequency, higher output power, and a much narrower vertical beamwidth. In addition, it requires a stabilized antenna for altitude accuracy. The following are some applications of a multi-dimensional radar: � Obtain range, bearing, and altitude data on enemy aircraft and missiles to assist in the guidance of CAP aircraft. � Provide precise range, bearing, and height information for fast and accurate initial positioning of fire-control tracking radars. � Detect low-flying aircraft. � Determine the range to distant landmasses. � Track aircraft over land. � Detect certain weather phenomena. � Track weather balloons. The modern warship has several radars. Each radar is designed to fulfill a particular need, but it may also be capable of performing other functions. For example, most multi-dimensional radars can be used as 1-13 Figure 1-14.—AN equipment indicator system.