Improved TargeT Tracking
With the inherent beam agility, target tracking
can be more adaptive and time efficient. This
will increase the radar tracking performance in
a dense target environment. This facilitates the
ability to choose the right target for weapon
engagement, and to prepare the weapon with
more accurate data i.e. enhance the fire control
capability.
The beam agility will also increase the capability
to perform search for new targets within a larger
search volume while retaining the target track
updates for current tracks. This will increase the
pilot’s situation awareness.
Wide fIeld of regard
With the swashplate solution the Gripen NG
AESA radar has the ability to cover a scan angle
up to ±100°. This will increase situation awareness
and be used to increase the quality of SAR
images. In BVR combat, wide angle scan also
allows the aircraft to maintain track on the target
whilst executing a 90° manoeuvre. This minimises
closure rate with the target, places one’s own aircraft
in the enemy’s clutter return and still allows
full guidance of BVR missiles.
mode flexibility
With the beam agility it is possible to interleave
different modes. This capability further increases
the situation awareness for the pilot. For example,
the pilot can use Air-to-Ground modes in parallel
to Air-to-Air search and track.
LoW probability of intercept
The AESA radar has qualities that makes the
aircraft more difficult to detect by an enemy and
thereby increases the aircrafts survivability. These
qualities include lower radar cross section, ability
to operate with reduced output power levels
and side-lobe levels, and the agile beam used for
random search and track patterns.
Saab and SeleX Galileo in
collAborAtive development
Saab and SELEX Galileo are to enter collaborative
development of an Active Electronically
Scanned Array (AESA) Radar for the Gripen
Next Generation (NG) programme. The wide
radar experience from both SELEX Galileo and
the Saab Business Unit; Saab Microwave Systems
will be combined in the joint radar development
program. The AESA radar will be based on the
SELEX Galileo Vixen AESA radar using functionality
from the Vixen program, PS-05/A and other
programs from both companies.
Increased detection range
Flexible beam and waveform control makes it
possible to optimize modes for long and short
range target acquisition. The AESA system is
also able to be cued by other onboard sensors,
eg Infra-Red Search and Track (IRST) or by data
from off-board resources such as Erieye. This will
increase the pilot’s situation awareness and make
it possible to take action earlier.
Improved electronic counter counter measures
Future adaptive beam forming facilitate improved
target detection in presence of several jammer
signals. Situation awareness can then be maintained
even in a dense RF-environment. This is
important for survivability.
Increased operational availability
The modular design of the antenna, including
the large numbers of transmit/receive modules,
ensures graceful degradation. This means that the
antenna will maintain excellent performance even
with a percentage of failures. This ensures high
availability which is an essential pre-requisite for
high intensity operations.
The Gripen NG radar will include the innovative
swashplate feature which significantly increases
the radar performance at high angles off aircraft
boresight. This will improve situational awareness
through a wider coverage area and gives better
quality SAR images at wider angles. In BVR combat
the wide field of regard also enables tactics to
be optimised.
