JED - December 2016 - 58

technologies that enable an EW system
to "learn" from experience against a
particular threat and to remember and
apply this experience as part of the systems countermeasures response. This
decision is not an effort to resolve the
terminology for the EW community but
rather for the practical purposes of this
article.

THREAT TRENDS ARE DRIVING THE
NEED FOR COGNITIVE EW
Over the past 15 or so years, EW
systems have exploited the advantage
provided by wideband software defined
radio (SDR) technology. It has enabled
EW systems to be reprogrammed more
quickly and more easily and to continually take advantage of new digital signal processing improvements. Of course,
technological advantages don't last
forever, and threat systems have now
started to incorporate wideband SDR
technology, as well, which has given
threats basic technological parity with
modern EW systems.
Paul Tilghman of DARPA explains:
"EW today is a holdover from Vietnam-

era EW practices. The most important
thing to understand is that if we looked
at a radar system fielded in that timeframe, we would find that it is comprised entirely of analog components.
This type of design makes the radar
very difficult to upgrade, which means
that once we determine how to uniquely
identify and counter a particular radar,
we can write that procedure down in
a 'playbook.' The EW system then can
consult the playbook in order to identify the radar and subsequently jam it.
Today, radar (and communications) systems are underpinned by digital electronics, which makes them inherently
much more flexible and easy to change.
This means we can no longer rely exclusively on the playbook. We have to expect that adversaries may change their
systems and invalidate formerly useful
entries in the playbook. This drives
us into a new technology space in EW
where we must be able to counter the
unexpected."
ONR's David Tremper says, "Spectrum congestion and challenged spectrum access are requiring that all users

implement systems that can assess the
spectrum, identify available portions
of the spectrum and dynamically shift
operations into those less congested
portions of the spectrum. This approach
gained traction with cognitive radio
concepts developed and demonstrated
to maintain robust communication operations. The proliferation of software
defined systems [in threats] has further
enabled the widespread development
of adaptive and unpredictable RF capabilities. As RF developers trend toward
adaptive and unpredictable use of the
spectrum, the EW systems that detect
and counter those systems are required
to also adaptively interpret and respond
to the changing spectrum and the dynamic users."
Tom Szumowski of Lockheed Martin says this new level of threat reprogrammability means there are more
"unknown" signals, as well as wartime
reserve modes (WARMs), that traditional EW systems cannot counter.
Greg Patschke agrees with his Lockheed Martin colleague. He says complex
threat waveforms, which can be rapidly

The Journal of Electronic Defense | December 2016

58

RF SITUATIONAL AWARENESS ON-CHIP
COGNITION BEYOND THE SPECTRUM
ULTRA-LOW-SWaP
Dense sensor networks across vast territories or on UAV swarms for
real-time RF situational awareness.

HIGH-PERFORMANCE COMPUTING ON-CHIP
Intelligence on the radio, tightening the RF sense-act loop and
enabling agile EW and ISR.

WAVEFORM PROCESSING, DEMODULATION, FEC
Full-stack, true software-defined radio on-chip with no
external hardware required.
DISCOVER A NEW APPROACH TO CYBER/
SPECTRUM OPERATIONS AOC booth 342

www.cognitivesystems.com/cognition
836097_Cognitive.indd 1

2016-10-23 12:47 AM


http://www.cognitivesystems.com/cognition

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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