JED - February 2014 - 25

as the I-Mast 100 designed for smaller,
corvette-type ships.
The effectiveness of the I-Mast solution has pushed the Royal Netherlands
Navy to plan the replacement of its Mfrigates with a next generation combat
vessel fitted with an integrated mast.
Moreover, a range of shipyards are offering the I-Mast solution for their naval
platforms, including Nethelands Damen,
Germany's ThyssenKrupp Marine Systems and South Korea's Daewoo.

The Spanish Navy, together with the
country's Navantia shipbuilding and
Indra electronic defense group, is working on a new surface combatant project,
known as the F110 frigate program, with
the goal of replacing the country's six
Santa Maria-class frigates as they approach the end of their operational life
in 2020. Destined to conduct a range
of missions in littoral scenarios, with
a 4-5,000-ton platform with flexible
multi-role and modular mission systems,
the program is in the requirements development phase, having completed the
conceptual definition phase in January
2013. The most relevant characteristic
in the F110 platform design is the "integrated mast/superstructure," which
intends to incorporate new materials
and new integrated sensors with planar
apertures. The feasibility study for the
"Mastin" technology demonstrator program was jointly awarded to both Navantia and Indra via a €2.5 million contract
at the end of 2011, with the scope of
designing and outfitting an integrated
mast structure incorporating a variety
of sensors including phased array radar,
electronic warfare and communications
systems, and considering the indigenous development of an S-band phased
array radar with the support of Lockheed Martin Spain. For two years, both
companies have been analyzing all the
structural and electrical aspects of the
mast and all the sensors that must be

Navantia's proposed design options for
the Spanish Navy's F110 Frigate, including
integrated masts. (Navantia image)

integrated to reach the expected capabilities of F110 program.
According to Indra, from the EW
standpoint the aperture-sharing concept between radar and EW has been
deeply analyzed. However, current
technology limitations do not allow a
complete integration, company officials
explained. As a result, a more affordable
approach has been defined in which the
radar and EW systems involved would be
separated. The Spanish Navy's preferred
option is for an indigenous solid-state
multifunction radar system employing
the latest active array gallium nitride
and digital beam-forming technology,
to be installed beside a wideband, wide
dynamic range EW system. The design
of this EW system, according to Indra,
demands that all the signal digitization
would be oriented to multibit digital receivers with a typical dynamic range of
60dB, which is achievable with existing
12-bit analog-to-digital converters.

During the 2012 Euronaval exhibition
outside Paris, French shipbuilding group
DCNS unveiled the Extended Range (ER)
variant of the Aquitaine-Class frigate. Designed for the Marine Nationale (French
Navy) and the export market (and already
proposed to several countries, the latest
being Canada), the FREMM-ER is largely
identical to French FREMM frigates, both
in terms of design and on-board systems,
while featuring new area air defense capabilities and, potentially, ballistic missile defence (BMD), as well as retaining

The Journal of Electronic Defense | February 2014

I-Masts have received and tested the
CESM suite.
By resolving the electromagnetic
conflicts and line-of-sight obstructions
inherent in traditional topside arrangements, the I-Mast 400 provides important advantages in terms of operational
performance and shipbuilding risk. The
I-Mast delivers superior situational
awareness thanks to a unique, 360-degree, unobstructed field of view for all
incorporated radars and optical sensors,
while the four non-rotating faces house
active phased array radar sensors that
achieve four times the performance of a
rotating radar.
Being built and tested by Thales Nederland, in parallel with the construction
of the ship, the I-Mast allows "plug &
play" installation on the ship, as demonstrated with Holland-class OPVs.
Separating shipbuilding and manufacturing, from the testing and integration of the ship's electronic suite also
reduces cost and technical risk during
the entire shipbuilding program. Moreover, the I-Mast incorporates all the
processing cabinets and ancillaries associated with the sensors and communications suite, offering a protected and
controlled environment that also makes
for easier maintenance activities and
straightforward capability upgrades.
The I-Mast 400 is fully operational,
according to Thales Nederland, on three
Holland-Class offshore patrol vehicles
(OPVs), while the fourth will be installed next August. In the meantime,
the I-Mast 400 has recently gone aboard
the new 27,800-ton Karel Doorman Joint
Logistic Support Ship (JSS).
While the first ships are receiving the
I-Mast 400, Thales Nederland is developing a scalable and modular family of IMast solutions, ranging from I-Mast 500,
which includes an APAR non-rotating
X-band active phased array radar using
ICWI technology for missiles guidance,
to the I-Mast 400 for lower-intensity
threats and medium-size vessels, as well



JED - February 2014

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

The View From Here
Conferences Calendar
Courses Calendar
From the President
The Monitor
World Report
Antennas: Shaping the Future of RF Applications
DARPA – No Surprise is the Prize
EW 101
AOC News
Views from the AOC 50th Annual International Symposium and Convention
Index of Advertisers
JED Quick Look
JED - February 2014 - Cover1
JED - February 2014 - Cover2
JED - February 2014 - 3
JED - February 2014 - 4
JED - February 2014 - 5
JED - February 2014 - The View From Here
JED - February 2014 - 7
JED - February 2014 - Conferences Calendar
JED - February 2014 - 9
JED - February 2014 - Courses Calendar
JED - February 2014 - 11
JED - February 2014 - From the President
JED - February 2014 - 13
JED - February 2014 - 14
JED - February 2014 - The Monitor
JED - February 2014 - 16
JED - February 2014 - 17
JED - February 2014 - 18
JED - February 2014 - 19
JED - February 2014 - World Report
JED - February 2014 - 21
JED - February 2014 - Antennas: Shaping the Future of RF Applications
JED - February 2014 - 23
JED - February 2014 - 24
JED - February 2014 - 25
JED - February 2014 - 26
JED - February 2014 - 27
JED - February 2014 - DARPA – No Surprise is the Prize
JED - February 2014 - 29
JED - February 2014 - 30
JED - February 2014 - 31
JED - February 2014 - 32
JED - February 2014 - 33
JED - February 2014 - EW 101
JED - February 2014 - 35
JED - February 2014 - 36
JED - February 2014 - AOC News
JED - February 2014 - Views from the AOC 50th Annual International Symposium and Convention
JED - February 2014 - 39
JED - February 2014 - 40
JED - February 2014 - Index of Advertisers
JED - February 2014 - JED Quick Look
JED - February 2014 - 43
JED - February 2014 - 44
JED - February 2014 - 45
JED - February 2014 - 46
JED - February 2014 - 47
JED - February 2014 - 48
JED - February 2014 - 49
JED - February 2014 - 50
JED - February 2014 - Cover3
JED - February 2014 - Cover4