JED - October 2016 - 25

SYSTEM SOLUTIONS A crewman on the guided missile destroyer USS Stout loads a Mk 214 RF seduction round into a Mk 36 DLS barrel. Many navies still rely on the Mk 36 DLS and similar fixed barrel 130-mm launchers. (US Navy) fired from highly mobile coastal batteries and small fast craft, naval EW advocates argue that it is time to think afresh about the contribution of softkill as part of a rebalanced ASMD capability. In particular, the emergence of increasingly potent anti-access/area denial (A2/AD) threats in cluttered and congested littoral regions, and the ability of would-be adversaries to use unconventional targeting methods, present a new challenge to the maritime force commander. There is also an increasingly diverse threat set to contend with - the differentiators including speed, signature, endgame kinematics and seeker type - the confines of the littoral serve to constrain a ship's ma- The modern soft-kill decoy system comprises three principal components: a command and control (C2) system computing the optimum firing solution on the basis of ship heading, speed, wind and bearing, the threat bearing and the type of threat; a launcher from which the countermeasures effectors are fired offboard; and the decoys themselves. The latter typically take the form of mortar-launched or rocket-propelled projectiles, which burst at a set range and height to release a payload (RF chaff, inflatable RF corner reflectors, IR material, dual RF/IR payloads, or multispectral decoys). A handful of navies have invested in more complex active offboard decoys, such as Nulka, C-GEM and Siren, and which use an electronic jammer payload to seduce the most advanced radar threat seekers. Debates on the relative merits of fixed and traversable launcher systems have raged for many years. Conventional fixed launchers use crossed barrel sets or parallel mountings (typically trained to 30º and 110º from the ship's head), but usually require the ship to maneuver to achieve a good deployment geometry relative to the ship and the incoming ASCM and ensure that the decoy presents a more attractive target to the missile seeker. This can cost valuable time in a missile engagement. Trainable launchers (able to traverse and elevate) minimize the need for a commander to maneuver his ship and offer greater tactical flexibility for applications in the seduction mode, although at the ex- The Journal of Electronic Defense | October 2016 neuver space, and may expose it to salvo attacks from multiple axes. Another issue is sustainability. Vertical launcher cells are a scarce asset in many ships, and they cannot be reloaded at sea, making a strong case for the use of soft-kill to defeat the majority of incoming ASCMs in a coordinated attack in order that hard-kill weapons can be husbanded for the most stressing ASCM targets. Cost also comes into consideration. A typical point defense missile costs in the order of US$500,000 to USD$1 million; a soft-kill response is orders of magnitude less expensive. 25

Table of Contents for the Digital Edition of JED - October 2016

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor
World Report
Bait in the Trap: Trainable Soft-Kill Systems Proliferate for ASMD
2017 EW/SIGINT Resource Guide
SIGINT History
EW 101
AOC News
Index to Advertisers
JED Quick Look
JED - October 2016 - cover1
JED - October 2016 - cover2
JED - October 2016 - 3
JED - October 2016 - 4
JED - October 2016 - 5
JED - October 2016 - The View From Here
JED - October 2016 - 7
JED - October 2016 - Conferences Calendar
JED - October 2016 - 9
JED - October 2016 - Courses Calendar
JED - October 2016 - 11
JED - October 2016 - From the President
JED - October 2016 - 13
JED - October 2016 - 14
JED - October 2016 - The Monitor
JED - October 2016 - insert1
JED - October 2016 - insert2
JED - October 2016 - 16
JED - October 2016 - 17
JED - October 2016 - 18
JED - October 2016 - 19
JED - October 2016 - 20
JED - October 2016 - 21
JED - October 2016 - World Report
JED - October 2016 - 23
JED - October 2016 - Bait in the Trap: Trainable Soft-Kill Systems Proliferate for ASMD
JED - October 2016 - 25
JED - October 2016 - 26
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JED - October 2016 - 39
JED - October 2016 - 2017 EW/SIGINT Resource Guide
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JED - October 2016 - SIGINT History
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JED - October 2016 - 67
JED - October 2016 - EW 101
JED - October 2016 - 69
JED - October 2016 - AOC News
JED - October 2016 - 71
JED - October 2016 - Index to Advertisers
JED - October 2016 - 73
JED - October 2016 - JED Quick Look
JED - October 2016 - cover3
JED - October 2016 - cover4
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