DCS AERGES MIRAGE F1, Руководство по эксплуатации самолета

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DCS: Mirage F1 Flight Manual Version 1.0
83
- central sector by releasing the radar stick (spring-loaded to the centre position)
On the scope the mean bearing of the scanned area: left, central or right is materialized by the
alidade whose length represents 7 km, i.e. the authorized engagement range.
The alidade is placed in the center of the search area when changing sectors.
The mean bearing of the scanned area is also copied by the narrow needle of the IDN (bearing
narrow needle selector on “R”).
The scan covers 6 lines and takes 1.5 seconds.
NOTE: The "TL" and "BZ" functions have priority over any other radar function.
5- Selections according to the missions
The selection of scannings allows, as long as the position of the target is accurately known, to
modify the search field and thus improve the illumination of the target by narrowing the search
cone.
In order to sharpen the image on the scope, the pilot has at his disposal a second selection which
is more particularly associated with the missions.
IN AIR TO AIR:
"HA", "IC" are the operating modes that determine the working conditions of the radar:
repetition frequencies, pulse width and starting of the parametric amplifier.
The purpose of the interference echo attenuation device (DATEP) is, in "HA" and “IC", to limit
the harmful effects of diffuse echoes.
"TL" and "BZ" are the functions designed for close combat.
IN AIR-GROUND:
"V1" is the selection that allows the visualization of the terrain flown over.
A. High altitude, “ HA ”
Characterized by a long pulse and by the use of the parametric amplifier, this function allows
the most large ranges and the use of 60° and 30° sweeps.
B. 1 short pulse, "1 C"
The characteristics are the same as in “HA” but the pulse width is reduced, and the radar
performance is slightly reduced in range.
C. DATEP (Interference Echo Attenuation Device)
The DATEP is used in AIR-AIR in the “HA”, “lC”, “TL”, and “BZ” modes.
The purpose of the device is to limit the harmful effects of diffuse echoes of various origins
(clouds, ground clutter, sea return…):
- in search, by a better contrast of the useful echoes on the scope, therefore an easier
exploitation by the pilot
- tracking, avoiding inopportune engagement of parasitic echoes
In “HA” and “lC”, on the 15 and 7 NM scales, the DATEP is in service only when the gain control
is maximum.