AN/ASG-18


AN/ASG-18 in nose of YF-12A.

IEEE Band


NATO Band

I Band (9350-9400 MHz)

Pulse Repetition
Frequency

980 to 1020 pps

Pulse Repetition Interval

980.392 to 1020.408 microseconds

Pulse Duration

0.150 to 0.250 microseconds

Elevation

+/- 45 degrees

Antenna Diameter

40 Inches

Manufacturer

Hughes

Peak Power:

12 kW

Average Power:

3 kW

Range

90% Chance of Detection of a 10m2 target at 100 nautical miles (goal)

Installation

41 separate units weighing about 2,100 pounds.

Type of Radar

Fire Control Search and Tracking Radar

Notes:

Originally designed for F-108 Rapier, then reworked into F-12 Blackbird program; then after cancellation of THAT program, eventually evolved into the AN/AWG-9 system found on the F-14 Tomcat.

Was the first pulse-doppler radar in the United States; and had a look-down/shoot-down capability for a single target track.