A reader, Benjamin Oliver,
recently made a very succinct comment regarding the use of the LCS and every
other Navy ship as shooters. To
paraphrase slightly, he said that distributed lethality won’t work without distributed
targeting. This is a brilliant
summation of the issue.
The LCS will have 100+ nm
anti-ship missiles coupled with 20 nm sensors.
Yes, the ship will have a helo and a UAV but the helo will be reserved
for ASW and near-ship ASuW. The UAV will
have a very limited sensor field of view and a single UAV will be woefully
inadequate for broad area target searches.
Thus, the ship will have to depend on off-board sensing and targeting. We’ve discussed this many times.
The Navy’s plan to use P-8s
and Triton UAVs is unworkable. Both are
large, slow, non-stealthy aircraft that will serve only as target drones for
enemy aircraft and missiles.
Submarines simply don’t have
the sensor range or speed to cover the large swaths of ocean needed to find
enemy ships. Plus, our submarines will
have more important tasks than acting as search platforms for the LCS.
Satellites are not capable
of real time targeting, contrary to what many people believe, and they won’t
last long in a peer war.
So, where will the
distributed lethality get its distributed targeting? The short, simple, and painful answer is that
there is no viable distributed targeting system. The kill chain is missing a key link and the
Navy’s distributed lethality is just another unworkable Navy fantasy without it.
The concept of distributed
targeting is, however, viable with the right sensors. Unfortunately, the Navy does not have the
right sensors and, worse, seems to have no grasp of the problem and no
intention of getting the right sensors.
The task falls, then, to us to define the right sensors.
The requirement is
simple. The sensor needs to be able to
penetrate many hundreds of miles of enemy territory undetected, find targets,
and transmit the data back to the shooters.
For the sake of this discussion, we’ll assume the shooters are ships,
the LCS specifically, although the shooters could also be aircraft or land
bases.
So, the sensor needs great
range, long endurance, stealth of some form, a decent size/power radar and/or
good optical sensor, and secure communications.
There are also a couple of implied characteristics.
Unless the sensor is a very
large AWACS / E-2 Hawkeye / P-8 Orion size platform, the radar it carries
(assuming it uses radar) will, of necessity, be small and low powered which
means the field of scan will be limited.
This suggests that large numbers of sensors will be needed to make up
for the limited individual coverage.
This, in turn, implies the characteristic
of affordability. Large numbers of
sensors can only be produced if the individual sensor is cheap.
By definition, many of these
sensors won’t make it back. This, again,
argues for extreme affordability to be able to absorb the losses and costs.
So, having defined the
requirements, what form of platform can meet the requirements?
Unmanned underwater vehicles
(UUV) are stealthy but too close to the surface to have much sensing range and
are too slow to cover much territory. UUVs,
then, would not make good general purpose distributed sensors. They could, however, be useful for monitoring
limited, fixed areas like navigational chokepoints or harbors.
Unmanned surface vessels
(USV), like UUVs, lack the sensor range and speed to cover sufficient
territory. In addition, they lack the
inherent stealth of a UUV.
Unmanned aerial vehicles
(UAV) potentially offer the range, endurance, and speed to cover larger
areas. Combined with the high altitude
they operate at, the sensing area is correspondingly greater. UAVs also offer the potential to be stealthy
through a combination of small size (compared to an AWACS or P-8) and airframe
shaping.
Blackjack UAV |
UAV’s, then, seem to be the
best choice for distributed sensors. The
concept of operation would be to flood a region with many dozens of UAVs at any
given moment. Although an individual UAV
would provide limited coverage, the large numbers would ensure adequate area
coverage and compensate for the inevitable high attrition rate.
The key question is whether
the desired characteristics can be made to fit in an affordable package. Can we build a UAV with great range, small
size, stealth, and decent radar/optics for a low enough price to allow us to
build thousands of them? That’s a
difficult challenge but that’s the part of the kill chain the Navy needs to be
working on. An LCS with a hundred or
thousand mile anti-ship missile is useless if we can’t provide targeting.
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Side note: An upsized Blackjack UAV might make a good design starting point for a distributed targeting sensor. The Blackjack has an operational radius of 480 miles and is small enough to be operated from any ship. It has a degree of stealth by virtue of its size and the airframe could probably be shaped to provide a greater degree of stealth.
Alternatively, a downsized MQ-1 Predator might also make a good starting point. It has an operational radius of around 1000 miles.
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