JAT BALWAN
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NEW DELHI: The Council of Scientific and
Industrial Research (CSIR) has developed state-
of-the-art marksmanship (shooting) training
system (DHVANI) for Indian Army. The
sophisticated acoustic sensor-based system will
help the Army to develop shooting techniques
of its combat personnel during training.
The system will help them in perfecting
marksmanship skills by accurately determining
the location of bullet impact and providing real-
time feedback during training.
The CSIR - country's premier industrial R&D
organization - will formally hand over the
'DHVANI' to Indian Army in Secunderabad this
afternoon.
The marksmanship training requires positive
and negative reinforcement of shooting
techniques immediately after each shot is fired.
However, the manual system currently used by
the Indian Army involves the marksman firing
shots at the target and subsequently walking
up to the target (about 300 meter) and
identifying whether the shots were a hit or a
miss.
This primitive type of marksmanship training
exhibits not only high turnaround times but is
also inconsistent, unreliable, inaccurate and
subjective.
This modern indigenous marksmanship training
system, DHVANI, is tailor made by CSIR-NAL
(CSIR-National Aerospace Laboratories) to
meet the requirements of the Indian Army at a
cost lower by 40% of the cost of similar
systems available elsewhere in the world
without compromising on the performance.
"The system originally developed for use by the
Indian Army has potential application for use by
the paramilitary forces and also in the sports
sector", said the ministry of science and
technology in its statement.
It said, "Each prototype currently costs Rs 9
lakh/firer lane, which is significantly lower than
the price tag of Rs 15-18 lakh for each firer
lane of older generation wired systems in use
with the Indian Army".
The DHVANI is based on the basic principles of
gas dynamics and aero-acoustics. Essentially, a
bullet is a supersonic projectile, which generates
a shock wave from its leading edge,
continuously at every point of its supersonic
travel. At any instant along the bullet path, the
shock wave envelope propagates in an invisible-
cone continuously outward at an angle related
to its Mach number. The pressure wave in air
caused due to the passing of the bullet results
in a pressure profile known as'N-wave' because
of its shape.
The hit location of the bullet is then determined
accurately by using an array of sensors to
record the acoustic pressure rise due to the
passing shock from the bullet.
"Using advanced algorithms developed at CSIR-
NAL, the recorded signal from the sensors are
analyzed for detection of N-wave, and the
geometrical shape of the shock wave is then
used to determine the coordinates of the bullet
on the target. These coordinates are then
wirelessly transmitted to a display at the
shooter end. The entire process starting from
firing a shot to the display of results at the
shooter end takes less than half a millisecond",
said the ministry.
Industrial Research (CSIR) has developed state-
of-the-art marksmanship (shooting) training
system (DHVANI) for Indian Army. The
sophisticated acoustic sensor-based system will
help the Army to develop shooting techniques
of its combat personnel during training.
The system will help them in perfecting
marksmanship skills by accurately determining
the location of bullet impact and providing real-
time feedback during training.
The CSIR - country's premier industrial R&D
organization - will formally hand over the
'DHVANI' to Indian Army in Secunderabad this
afternoon.
The marksmanship training requires positive
and negative reinforcement of shooting
techniques immediately after each shot is fired.
However, the manual system currently used by
the Indian Army involves the marksman firing
shots at the target and subsequently walking
up to the target (about 300 meter) and
identifying whether the shots were a hit or a
miss.
This primitive type of marksmanship training
exhibits not only high turnaround times but is
also inconsistent, unreliable, inaccurate and
subjective.
This modern indigenous marksmanship training
system, DHVANI, is tailor made by CSIR-NAL
(CSIR-National Aerospace Laboratories) to
meet the requirements of the Indian Army at a
cost lower by 40% of the cost of similar
systems available elsewhere in the world
without compromising on the performance.
"The system originally developed for use by the
Indian Army has potential application for use by
the paramilitary forces and also in the sports
sector", said the ministry of science and
technology in its statement.
It said, "Each prototype currently costs Rs 9
lakh/firer lane, which is significantly lower than
the price tag of Rs 15-18 lakh for each firer
lane of older generation wired systems in use
with the Indian Army".
The DHVANI is based on the basic principles of
gas dynamics and aero-acoustics. Essentially, a
bullet is a supersonic projectile, which generates
a shock wave from its leading edge,
continuously at every point of its supersonic
travel. At any instant along the bullet path, the
shock wave envelope propagates in an invisible-
cone continuously outward at an angle related
to its Mach number. The pressure wave in air
caused due to the passing of the bullet results
in a pressure profile known as'N-wave' because
of its shape.
The hit location of the bullet is then determined
accurately by using an array of sensors to
record the acoustic pressure rise due to the
passing shock from the bullet.
"Using advanced algorithms developed at CSIR-
NAL, the recorded signal from the sensors are
analyzed for detection of N-wave, and the
geometrical shape of the shock wave is then
used to determine the coordinates of the bullet
on the target. These coordinates are then
wirelessly transmitted to a display at the
shooter end. The entire process starting from
firing a shot to the display of results at the
shooter end takes less than half a millisecond",
said the ministry.
