JED - May 2014 - 42

The Journal of Electronic Defense | May 2014
passive location and identification of
radar
Mason,
threats. As described by Brian
International Business DevelIDA
2: Dive Deep into
Interference Analysis
opment - EW products, Lockheed Martin
- Mission Systems and Training
(Owego, NY), the AN/APR-48 system is
often referred to as a "targeting ESM"
system, and is typically paired with a
fire-control radar, but can also operate
independently. "It provides target intel
information to the platform that can
be combined with that from the radar
as well as other sensors, but with no
direct cueing to any weapon system."
The AN/APR-48A was developed in the
1980s and was originally intended for the
Kiowa helicopter, going into production
in the late 1980s. The development was
then leveraged for the Apache Longbow,
and there have now been a total of 450
systems produced and in service in more
than 12 countries including the US.
In 2011, Lockheed was put under
contract to modernize the system
with a new digital receiver as well as
some other
42
functional improvements.
The upgraded system will have a new
nomenclature, the AN/APR-48B Modernized
RF Interferometer. With procurement
managed
Sensors,
Mason
says
by
PM-Apache
Lockheed will
resume production of the 48B variant
in the 2015 time frame for the AH-64E
"Guardian" Apaches, but maintain legacy
compatibility.
The Apache is also equipped with the
Rapidly identify, precisely analyze,
easily evaluate and intelligently
localize RF Interference.
* Extremely fast: 12 GHz/s
* Super light: < 3 kg
* Impressively sensitive: NF7dB
* I/Q-Analyzer: Real-time
in-field analysis
· 1 μs spectrogram resolution
· Persistence display
www.narda-ida.com
Sales in North America:
Northrop Grumman AN/APR-39 RWR, the
AN/ALQ-144 IR countermeasures system
from BAE Systems (Nashua, NH),
the
AN/AVR-2 laser warning receiver from
ISR Systems (Danbury, CT), as well as
chaff and flare dispensers. The Apache's
ASE suite controller, the Aircraft Gateway
Processor, is provided by Selex ES
(Luton, Bedfordshire, UK).
From the outset, the Apache has been
A.G. Franz, LLC
Phone (800) 351-1894
narda-sales@agfranz.com
www.agfranz.com/narda-ew/
equipped with an RF jamming system -
the AN/ALQ-136 built by Exelis. Though
it is no longer in production, depending
on how you categorize the number
of systems that were significantly revamped
during Desert Storm, between
1,000 and 1,600 ALQ-136 systems have
been built.
Recognizing that the ALQ-136
was designed to counter Cold War era
threats, the Army approved an Engi682347_AGFranz.indd
1
3/12/14 12:17 PM
The latest version
Apache, the AH-64D
Apache Longbow Block
III helicopter, known as
the AH-64E "Guardian"
variant, was delivered to
the U.S. Army in October
2011. Eventually, the
Army plans to upgrade
its entire Apache fleet.
neering Change Proposal (ECP) for the
ALQ-136 in 2010 to upgrade the system
for continued service through 2030 and
beyond. Although the ECP was an obsolescence
(as opposed to a new-capability)
upgrade, Exelis nonetheless infused
a significant amount of modern technology
into the effort, primarily leveraging
system technology from the company's
AN/ALQ-211 (SIRFC) system, including
advanced digital RF memory (DRFM)based
jamming and software reprogramming
for future threats.
The original plan actually called for
replacement of the Apache AN/APR39
and AN/ALQ-136 systems with the
AN/ALQ-211 SIRFC, but ultimately the
Army basically updated the Operations
Requirements Document (ORD) for the
Apache ALQ-136 to handle
advanced
threats. Hastings says the ECP consists
of three different LRUs - a transmit
antenna; a receive antenna; and a receiver/transmitter
that is the heart of
the system. "It's a much less expensive
system than the entire -211, but it's still
very capable." To date, the Army has
purchased only a small number of the
transmit antennas, however, and has
thus far not announced plans to equip
its Apaches with the full ECP version of
the ALQ-136.
Hastings notes that since the US
Army has its own road map for Apache
ASE,
they've been focusing on international
sales. However, he points out
that, for the US Army to buy the ECP
version as a logistics substitute, including
for FMS sales, the system must go
http://www.agfranz.com/narda-ew/ http://www.narda-ida.com

JED - May 2014

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

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor
Washington Report
World Report
Interview
European Helicopter EW
Advanced ASE And ESM Already On Some US Helicopters
Ground-Based COMINT Solutions
Fighting the Kill Chain: Concepts and Methods of Electronic Attack
EW 101
AOC News
Index of Advertisers
JED Quick Look
JED - May 2014 - cover1
JED - May 2014 - cover2
JED - May 2014 - 3
JED - May 2014 - 4
JED - May 2014 - 5
JED - May 2014 - The View From Here
JED - May 2014 - 7
JED - May 2014 - Conferences Calendar
JED - May 2014 - 9
JED - May 2014 - Courses Calendar
JED - May 2014 - 11
JED - May 2014 - From the President
JED - May 2014 - 13
JED - May 2014 - 14
JED - May 2014 - The Monitor
JED - May 2014 - 16
JED - May 2014 - 17
JED - May 2014 - 18
JED - May 2014 - 19
JED - May 2014 - 20
JED - May 2014 - 21
JED - May 2014 - Washington Report
JED - May 2014 - 23
JED - May 2014 - World Report
JED - May 2014 - Interview
JED - May 2014 - 26
JED - May 2014 - 27
JED - May 2014 - European Helicopter EW
JED - May 2014 - 29
JED - May 2014 - 30
JED - May 2014 - 31
JED - May 2014 - 32
JED - May 2014 - 33
JED - May 2014 - 34
JED - May 2014 - 35
JED - May 2014 - 36
JED - May 2014 - 37
JED - May 2014 - 38
JED - May 2014 - Advanced ASE And ESM Already On Some US Helicopters
JED - May 2014 - 40
JED - May 2014 - 41
JED - May 2014 - 42
JED - May 2014 - 43
JED - May 2014 - Ground-Based COMINT Solutions
JED - May 2014 - 45
JED - May 2014 - 46
JED - May 2014 - 47
JED - May 2014 - 48
JED - May 2014 - 49
JED - May 2014 - Fighting the Kill Chain: Concepts and Methods of Electronic Attack
JED - May 2014 - 51
JED - May 2014 - 52
JED - May 2014 - 53
JED - May 2014 - 54
JED - May 2014 - 55
JED - May 2014 - 56
JED - May 2014 - 57
JED - May 2014 - 58
JED - May 2014 - 59
JED - May 2014 - EW 101
JED - May 2014 - 61
JED - May 2014 - AOC News
JED - May 2014 - 63
JED - May 2014 - 64
JED - May 2014 - Index of Advertisers
JED - May 2014 - JED Quick Look
JED - May 2014 - cover3
JED - May 2014 - cover4
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