JED - December 2016 - 57

Cognitive Electronic Warfare

Anthony Nigara, Director, Electronic
Warfare Mission Solutions, Harris Defense Electronics: "In my opinion, these
two terms are interchangeable. Cognitive in this case refers to utilizing machine learning, also known as Artificial
Intelligence (AI), processes and algorithms to the EW field...Adaptive EW
is actually a very broad term that can
encompass any application of Artificial
Intelligence to the EW problem set. Due
to the broad definition, there can be
multiple technologies at play at once to
instantiate and realize any particular
cognitive EW system."
David Tremper, EW Program Officer,
Office of Naval Research: "Adaptive EW
is a more encompassing term that cognitive EW. 'Adaptive' can describe various
levels of dynamic spectrum operations,
including static, rule-based operations

The Journal of Electronic Defense | December 2016

of its behavior. This learning can either
be how to interpret the inputs it's getting or what action should be taken as
a result."
Col (Ret.) Greg "Patch" Patschke,
Senior Manager, Advanced Technology
Laboratories (ATL), Lockheed Martin:
"Operationally, the biggest difference
between adaptive and cognitive is time.
DARPA BLADE focused on digital communications networks, which don't respond as quickly as some of the more
advanced radars. So you had time to observe signal behaviors and adjust your
counter appropriately. For a self-defense
capability against a modern threat radar, the sense of urgency drives you to
an adaptive solution.  That being said,
the technology will mature to the point
where the cognitive algorithms are operationally feasible against radar threats."

as well dynamic, learning-based, autonomous operations, the latter of which
we consider 'cognitive EW.'"
Paul Tilghman, Program Manager, Microsystems Technology Office, DARPA:
"In the general sense, the two terms
can be used somewhat interchangeably
in that they both refer to an EW system
that changes its jamming according to
its current environment, including, for
example, what radar systems are present. To actually differentiate these two
adjectives, its best to think about it in
terms of timescale. Strictly speaking, an
adaptive system changes its jamming
parameters on a short timeframe according to the received signal from the
adversary's system. This could be on the
order of tens of microseconds to a second. Adaptive systems, however, typically have no memory, which means that
each time they adapt to the adversary,
they 'forget' their previous adaptation.
Cognitive systems, on the other hand,
acquire knowledge across each adaptive
response, which enables them to learn
how the adversary system reacts over a
longer timeframe."
Dan Kilfoyle, Technical Director, EW
Systems, Raytheon Space and Airborne
Systems: "The terms are often used
interchangeably, but when it comes to
EW, cognitive is more precise than adaptive. Cognitive captures the essential
idea that the system is able to confront
a threat that wasn't anticipated by the
system's designer, determine an effective course of action, and learn from
that experience - react 'better' the next
time that threat is seen. I could argue
that current systems are already adaptive in that they sense the threat and
adapt or select their response based on
what they see. I've also heard the term,
'smarter EW.'"
From the responses above, it is clear
that the terminology is still evolving.
In this article, we will use the term,
"cognitive EW," to describe advanced

57



JED - December 2016

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

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor
Washington Report
World Report
Interview: Col Jeffrey N. Aldridge, USAF
Interview: US Rep. Joe Pitts
The Future of Airborne Electronic Attack
Regaining the Advantage – Cognitive Electronic Warfare
Technology Survey: Flightline and Portable EW Simulators
AOC EW Singapore Preview
New Products
Report from the 2016 EW GCC Conference
Crows in the Community
The Heat is On
EW 101
Report from the 2016 AOC CEMA Conference
2016 AOC Award Winners
AOC News
Index of Advertisers
JED Quick Look
JED - December 2016 - cover1
JED - December 2016 - cover2
JED - December 2016 - 3
JED - December 2016 - 4
JED - December 2016 - 5
JED - December 2016 - The View From Here
JED - December 2016 - 7
JED - December 2016 - Conferences Calendar
JED - December 2016 - 9
JED - December 2016 - Courses Calendar
JED - December 2016 - 11
JED - December 2016 - From the President
JED - December 2016 - 13
JED - December 2016 - 14
JED - December 2016 - The Monitor
JED - December 2016 - insert1
JED - December 2016 - insert2
JED - December 2016 - 16
JED - December 2016 - 17
JED - December 2016 - 18
JED - December 2016 - 19
JED - December 2016 - 20
JED - December 2016 - 21
JED - December 2016 - 22
JED - December 2016 - 23
JED - December 2016 - 24
JED - December 2016 - 25
JED - December 2016 - Washington Report
JED - December 2016 - 27
JED - December 2016 - World Report
JED - December 2016 - 29
JED - December 2016 - Interview: Col Jeffrey N. Aldridge, USAF
JED - December 2016 - 31
JED - December 2016 - 32
JED - December 2016 - 33
JED - December 2016 - Interview: US Rep. Joe Pitts
JED - December 2016 - 35
JED - December 2016 - 36
JED - December 2016 - 37
JED - December 2016 - The Future of Airborne Electronic Attack
JED - December 2016 - 39
JED - December 2016 - 40
JED - December 2016 - 41
JED - December 2016 - 42
JED - December 2016 - 43
JED - December 2016 - 44
JED - December 2016 - 45
JED - December 2016 - 46
JED - December 2016 - 47
JED - December 2016 - 48
JED - December 2016 - 49
JED - December 2016 - 50
JED - December 2016 - 51
JED - December 2016 - 52
JED - December 2016 - 53
JED - December 2016 - 54
JED - December 2016 - 55
JED - December 2016 - Regaining the Advantage – Cognitive Electronic Warfare
JED - December 2016 - 57
JED - December 2016 - 58
JED - December 2016 - 59
JED - December 2016 - 60
JED - December 2016 - 61
JED - December 2016 - 62
JED - December 2016 - Technology Survey: Flightline and Portable EW Simulators
JED - December 2016 - 64
JED - December 2016 - 65
JED - December 2016 - 66
JED - December 2016 - 67
JED - December 2016 - 68
JED - December 2016 - 69
JED - December 2016 - 70
JED - December 2016 - AOC EW Singapore Preview
JED - December 2016 - 72
JED - December 2016 - 73
JED - December 2016 - New Products
JED - December 2016 - 75
JED - December 2016 - Report from the 2016 EW GCC Conference
JED - December 2016 - 77
JED - December 2016 - Crows in the Community
JED - December 2016 - 79
JED - December 2016 - The Heat is On
JED - December 2016 - 81
JED - December 2016 - 82
JED - December 2016 - 83
JED - December 2016 - 84
JED - December 2016 - 85
JED - December 2016 - EW 101
JED - December 2016 - 87
JED - December 2016 - 88
JED - December 2016 - 89
JED - December 2016 - Report from the 2016 AOC CEMA Conference
JED - December 2016 - 91
JED - December 2016 - 92
JED - December 2016 - 2016 AOC Award Winners
JED - December 2016 - 94
JED - December 2016 - 95
JED - December 2016 - 96
JED - December 2016 - 97
JED - December 2016 - 98
JED - December 2016 - 99
JED - December 2016 - AOC News
JED - December 2016 - 101
JED - December 2016 - 102
JED - December 2016 - 103
JED - December 2016 - 104
JED - December 2016 - Index of Advertisers
JED - December 2016 - JED Quick Look
JED - December 2016 - cover3
JED - December 2016 - cover4
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