November 4,2008:
Recently, the U.S. Air Force successfully tested a battlefield Internet
system on an AC-130 gunship. This allowed the AC-130 crew to share videos from
their sensors with other aircraft. For nearly a decade, the U.S. Department of
Defense has been trying to develop equipment that would allow the aircraft
(including UAVs) of all three services to be able to communicate digitally (as
in a battlefield Internet). Work has been going on, to make this happen, for
the last six years. Getting "battlefield broadband" to work has been
a work in progress, just as it has been in the commercial sector (where
progress has also been slow.)
Everyone is
using the air force Link 16 data format for sending digital data over a
wireless network. Three years ago, a test had an army UH-60A helicopter, a navy
F-18 and an air force F-15E, sitting on the ground, sending and receiving
digital data. A ground station was also tied into the network. The successful
test demonstrated that all three services had successfully modified their
communications gear to handle Link 16 data. This was followed by tests with the
aircraft in the air, including an army UAV and an AH-64 helicopter gunship,
followed by tests with aircraft firing weapons, using target data from another
aircraft, or someone on the ground. By the end of the decade, the Department of
Defense wants to have the capability for troops on the ground, to share
targeting data (including live video), with aircraft, and vice versa. Sort of
battlefield video conferencing, with weapons.
At this
point, most of the effort is going into making the system reliable enough to
withstand the rigors of combat situations. If the system isn't reliable enough,
the troops won't use it. Simple as that. During World War II, the military
first encountered high-tech gear that was simply ignored by the troops, because
the stuff did not work, or work well enough to depend on in a life and death
situation. Those attitudes have continued, and developers know that if their
gear is not robust enough, it will be rejected (unofficially, of course) by the
troops.
The Link 16
based battlefield Internet system would allow data fusion, with commanders and
intelligence analysts seeing sensor data (basically high resolution video) from
many aircraft (fighters, gunships, helicopters and UAVs) over a battlefield,
and use all the information to best select targets and assign air and ground
forces to attack most effectively. Currently, all the aircraft with high-res
eyes on the battlefield require lots of radio chatter to share their data. This
approach is slow, and subject to errors.
The data
fusion can include date from other sensors. These include those collecting
electronic transmissions (from radios, cell phones or even automobiles) and
photo-reconnaissance pods (which use high rez, like 30 megapixel and up,
digital cameras to take still pictures and immediately transmit them).