Zephyr Net

a) Search Displays

(i) PD Mode - VEL and AA submodes
Vertical axis velocity and horizontal axis azimuth. Symbols: Horizon Line, Elevation Strobe, Acquisition Symbol, Velocity Target Symbol.

(ii) PD Mode - PR submode
Vertical axis range and horizontal displacement azimuth. Symbols: Horizon Line, Elevation Strobe, Acquisition Symbol, Range Target Symbol.

(iii) Pulse Mode
Vertical axis range and horizontal displacement azimuth. Symbols: Horizon Line, Elevation Strobe, Acquisition Symbol, Target Video

(iv) HI MAP / LO MAP
Offset centre PPI display, having radial distance from indicator baseline centre proportional to range, and angular position proportional to azimuth position. Symbols: Horizon Line, Elevation Strobe, Target Video. Additionally shows Lateral Offset Cursor and Bombing Range Strobe at 10 and 25 mile ranges.

(v) A.G. Mode
Stationary horizontal position having vertical displacement proportional to range. Symbols: Horizon Line, Elevation Strobe, Range Strobe, Target Video.

(vi) TERR Mode
Offset centre PPI display. Symbols: Horizon Line, Elevation Strobe, Target Video, TERR Intensification

(vii) VI Mode
Range vs azimuth display. Symbols: Horizon Line, Elevation Strobe, Acqusition Symbol, Target Video.

b) Acquisition Displays

i) PD Mode - VEL Submode: scan stopped at the target selected by acquisition symbol.
ii) PD Mode - AA Submode: scan stopped at the target selected automatically.
iii) PD Mode - PR Submode: as a) i) above
iv) Pulse Modes - range versus azimuth B type with the scan stopped at the target selected by the acquisition symbol.
v) HI/LO MAP modes - PPI display with scan stopped as an angle commanded by the lateral position of control antenna.
vi) Range versus azimuth B type display with the scan stopped at the targe selected by the acquistion symbol.

c) Track Displays

(i) PD Mode - a range versus azimuth display wit an expanded velocity sweep along the left edge of the display. Adds Allowable Steering Error (ASE) circle, Steering error dot, R min, R a, Range Target Symbol, Range Rate Circle, Range Rate Gap to display.
ii) Pulse, LO MAP HI MAP Modes - a range versus azimuth B type display having dithered sweep with Allowable Steering Error (ASE) circle, R min, R a, Range Target Symbol, Range Rate Circle, Range Rate Gap added to display.
iii) AG Mode - As AG Search display with added range rate circle
iv) J (AOJ only) displays similar to the track displays in the pulse MAP modes with range circle removed.
v) VIS IDENT mode - range versus B type display having dithered sweep, and added symbols for Allowable Steering Error (ASE) circle, Steering error dot, Range Rate Circle, Range Rate Gap, Range Strobe

Performnce Characteristics
Search

i) Wide and orientable narrow scans provided. Either single, two or three bar scan with retraced centre bar. These are stabilised for roll and pitch. An additional scan is provided for TERR mode.
ii) Minumum detectable signal (Pulse Mode) - capable of displaying a -105dBm peak target signal as applied to the antenna terminals.
iii) Minimum detectable signal (PD Mode - AA/PR Submode)
Automatically detects signals of 5dB S/N ratio closing at velocity from 120-1800 knots greater than the host aircraft velocity. This peformance obtained in the presence of an unwanted signal of 65dB S/N ratio at the velocity of the host aircraft (noise in a 550 cps bandwidth)
iv) Minimum Discernable Signal (PD Mode - VEL Submode)
Capable of displaying a -138 dBm target signal for targets closing at velocities from 120-1800 knots geater than the velocity of the host aircraft. This is about 3dB less than the minimum detectable signal of the previous paragraph.

b) Tracking operation
Satisfactory tracking will be accomplished under the following conditions at S/N ratios greater than 6dB.
i) Capable of tracking a target within view angle of 120 deg azimuth & elevation.
ii) Capability of tracking target with angular line of site rate of 15 deg/sec
iii) Capability of tracking targets to at least 50 miles in pulse and 100 miles in Pulse Doppler modes.
iv) Capable of acquiring & tracking a targe closing up to 3190 knots and opening at 290 knots.

) Capable of tracking a target within view angle of 120 deg azimuth & elevation.
ii) Capability of tracking target with angular line of site rate of 15 deg/sec
iii) Capability of tracking targets to at least 50 miles in pulse and 100 miles in Pulse Doppler modes.
iv) Capable of acquiring & tracking a targe closing up to 3190 knots and opening at 290 knots.

The AWG-10A's missile envelope was more like a mushroom, if you will - and much more accurately described the lethal zone of the missiles

c) CW Illumination Mode: At a frequency of 10,125 +- M/cs the sidelobe levl is higher than -6dB within 10 deg of boresight and higher than 12dB at angles from 10 deg to 35 deg from boresight.

Tracking Range Against Small fighter:
EFA-2000 (ECR 90): 160-175 km
F-4E (AN/APG-30): 38 km