JED - August 2014 - 17

t h e

DARPA PROGRAM STUDIES NEW JAMRESISTANT COMMUNICATION SYSTEM
The Defense Advanced Research Projects Agency (DARPA) has issued a Broad
Agency Announcement (BAA) for the
Hyper-wideband Enabled RF Messaging
(HERMES) program intended to explore
the feasibility of a new, jam-resistant
wideband spread-spectrum RF communications system.
In addition to the growing threat
of intentional and malicious jamming,
the BAA notes that, with only a small
portion of the spectrum allocated to
the Department of Defense, spectrum
management within and between the
Services has become an increasingly
difficult task in itself. DARPA cites
2012 data from the National Telecommunications and Information Administration, which reports that "the US
Government maintains exclusive rights
to only 1.4 percent of the RF spectrum
(0-300GHz), while 4.8 percent of the
frequencies were designated as exclusive non-government and 93.8% as
shared access. Even within this exclusive 1.4 percent of the RF spectrum
assigned to the US government, it is
distributed among several federal departments and agencies."
According to DARPA, affecting a
shift in the usage and allocation of
the RF spectrum "is no small feat,
requiring more than an engineering
solution. An engineering solution,
however, is the necessary first step."
The overall goal of the HERMES study
is to find ways to "reclaim use of lost

n e w s

The BAA points out that the fundamental physics of high-power amplifiers
tends to stifle attempts at delivering
high-power jamming signals with large
fractional bandwidth, and because
physics favors resonant devices, the
receiver should be able to reject inband spectrum as wide as 1 GHz while
still receiving 90 percent of the signal.
"The wideband operation also enables
relevant data-rates while maintaining
ultra-low power spectral densities to
mitigate interference with conventional

bandwidth without unintentionally
jamming others."
The envisioned jam-resistant system
will provide a spread-spectrum link with
greater than 10 GHz of instantaneous
bandwidth and operate below 20 GHz to
mitigate atmospheric absorption in longrange links. It will also employ coding
gain greater than 40 dB and adaptive
spectral filtering to provide dynamic mitigation to interference and jamming. Ultimately, the objective is to achieve greater
than 70 dB of jammer suppression.

Ka-Band

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Inflight
Communication
Solutions

MITEQ offers a wide range of flight proven
[RTCA D0-160 E/F] components and
subsystems at Ka-Band

659294_MITEQ.indd 1

Internet

The Journal of Electronic Defense | August 2014

for multi-domain, object-based intelligence and information sets; and
agile techniques to migrate/integrate
existing "legacy" applications and
relational data stores with a "cloud"
architecture.
All TENCAP efforts are anticipated
to rapidly (usually less than 18 months)
integrate existing technology into field
testable, functional prototypes of solutions. The estimated value of requirements under the BAA over the next five
years is $15 million. The BAA Number is:
USAFWC BAA 14-01. The point of contact is: William T. Smith, (937) 255-2479;
e-mail: william.smith.11@us.af.mil. -
J. Haystead

m o n i t o r

17

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9/18/13 1:41 AM


http://www.miteq.com http://www.miteq.com

JED - August 2014

Table of Contents for the Digital Edition of JED - August 2014

The View From Here
Conferences Calendar
Courses Calendar
From the President
Letters
The Monitor
Washington Report
World Report
Back to the Future With HF SIGIHT
HF SIGIHT Battles the Ionosphere
Technology Survey: Solid-State Power Amplifiers
Book Reviews
EW 101
Index of Advertisers
JED Quick Look
JED - August 2014 - cover1
JED - August 2014 - cover2
JED - August 2014 - 3
JED - August 2014 - 4
JED - August 2014 - 5
JED - August 2014 - The View From Here
JED - August 2014 - 7
JED - August 2014 - Conferences Calendar
JED - August 2014 - 9
JED - August 2014 - Courses Calendar
JED - August 2014 - 11
JED - August 2014 - From the President
JED - August 2014 - 13
JED - August 2014 - Letters
JED - August 2014 - The Monitor
JED - August 2014 - 16
JED - August 2014 - 17
JED - August 2014 - 18
JED - August 2014 - 19
JED - August 2014 - 20
JED - August 2014 - 21
JED - August 2014 - Washington Report
JED - August 2014 - 23
JED - August 2014 - World Report
JED - August 2014 - 25
JED - August 2014 - 26
JED - August 2014 - 27
JED - August 2014 - Back to the Future With HF SIGIHT
JED - August 2014 - 29
JED - August 2014 - 30
JED - August 2014 - 31
JED - August 2014 - HF SIGIHT Battles the Ionosphere
JED - August 2014 - 33
JED - August 2014 - 34
JED - August 2014 - 35
JED - August 2014 - 36
JED - August 2014 - Technology Survey: Solid-State Power Amplifiers
JED - August 2014 - 38
JED - August 2014 - 39
JED - August 2014 - 40
JED - August 2014 - 41
JED - August 2014 - 42
JED - August 2014 - 43
JED - August 2014 - 44
JED - August 2014 - Book Reviews
JED - August 2014 - EW 101
JED - August 2014 - 47
JED - August 2014 - 48
JED - August 2014 - Index of Advertisers
JED - August 2014 - JED Quick Look
JED - August 2014 - cover3
JED - August 2014 - cover4
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