JED - December 2015 - 51

ogy vendors, such as cameras, etc. Once
our technology has localized a target
signal, then the other technology from
the Airbus side, such as the optical thermal cameras and spectral radios that
they offer, are used to further identify
the intruders."

TECHNOLOGY DRIVES OPPORTUNITY

the frequency range, bandwidth and
the environment around you." For example, slowly-varying signals, including unmodulated (CW) carriers and
narrowband signals may be impossible
or difficult to locate with TDOA techniques. Alternatively, with POA, differences in a signal's power of arrival are
used to determine the location of the
transmitter, and is much more effective
for these types of signals."
Advancements in software also play
a large role in the practical and cost-ef-

We've changed the face
(or at least the front panel)
of RF and Microwave Instrumentation

The Journal of Electronic Defense | December 2015

New capabilities offered by advancing
technology play a pivotal role in the potential adoption and use of SIGINT systems for border security applications. LS
Telcom's Ross observes that, "One thing
we must consider is that technology has
been very much advancing over the last
5-10 years. Detecting potential threat
signals and then geolocating them is
something that, with the technology
that we use today, would not have been
possible ten years ago, at least not in an
economically feasible way."
Although GEW's Van Biljon characterizes the communications systems being
used along the border by people of interest as "not that sophisticated - commercial mobile radios and cell phones,"
he also emphasizes that the technology
used to detect them must nevertheless
be designed to the task. "You have to be
able to detect very short-burst signals,
and DF systems must be designed for
much wider bandwidths, as well as be
capable of moving into higher frequencies than the normal, lower frequencies
we are used to traditionally."
"Signal detection, identification and
location is a process requiring sophisticated technology at each stage," says
Ross. "For example, in order to identify
a possible threat, you have to recognize
it as such, which means you need to
have historical data. If you look at the
price of storage ten years ago, a terabyte
of data was hugely expensive, whereas
today you can basically neglect that
cost, which means we're able to store
huge amounts of data collected over
weeks, months, or perhaps years, which
can then be used as a reference."
Similarly, the geolocation task
also makes use of overall advances
in electronics technology. Says Ross,
"Geolocation techniques, like timedifference-of-arrival (TDOA) and power-of-arrival (POA), require substantial
processing power, only possible with

the processing power now readily available. So the advancement of technology
is in direct line with the capabilities of
the systems."
LS Telcom's Observer system uses
a hybrid TDOA/POA approach. As described by Francis Ielsch, the company's Product Manager for Hardware
Monitoring, "Whether you're talking
about traditional DF, AOA, TDOA or
POA, each method has advantages and
disadvantages, depending on the type
of signal you're trying to geolocate,

51

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JED - December 2015

Table of Contents for the Digital Edition of JED - December 2015

The View from Here
Conferences Calendar
Courses Calendar
From the President
Letters
The Monitor
Washington Report
World Report
2015 AOC Award Winners
SIGINT on the Border
Jamming Down Under
Commercial Airliners: Still Vulnerable to MANPADS
New Products
Threat Monitor
EW 101
Report from the 2015 AOC Pacific Conference
Report from the 2015 AOC CEMA Conference
AOC News
Index of Advertisers
JED Quick Look
JED - December 2015 - cover1
JED - December 2015 - cover2
JED - December 2015 - igc
JED - December 2015 - OGC
JED - December 2015 - 3
JED - December 2015 - 4
JED - December 2015 - 5
JED - December 2015 - The View from Here
JED - December 2015 - 7
JED - December 2015 - Conferences Calendar
JED - December 2015 - 9
JED - December 2015 - Courses Calendar
JED - December 2015 - 11
JED - December 2015 - From the President
JED - December 2015 - 13
JED - December 2015 - Letters
JED - December 2015 - The Monitor
JED - December 2015 - 16
JED - December 2015 - 17
JED - December 2015 - 18
JED - December 2015 - 19
JED - December 2015 - 20
JED - December 2015 - 21
JED - December 2015 - 22
JED - December 2015 - 23
JED - December 2015 - 24
JED - December 2015 - 25
JED - December 2015 - 26
JED - December 2015 - 27
JED - December 2015 - 28
JED - December 2015 - 29
JED - December 2015 - Washington Report
JED - December 2015 - 31
JED - December 2015 - World Report
JED - December 2015 - 33
JED - December 2015 - 2015 AOC Award Winners
JED - December 2015 - 35
JED - December 2015 - 36
JED - December 2015 - 37
JED - December 2015 - 38
JED - December 2015 - 39
JED - December 2015 - 40
JED - December 2015 - 41
JED - December 2015 - 42
JED - December 2015 - 43
JED - December 2015 - SIGINT on the Border
JED - December 2015 - 45
JED - December 2015 - 46
JED - December 2015 - 47
JED - December 2015 - 48
JED - December 2015 - 49
JED - December 2015 - 50
JED - December 2015 - 51
JED - December 2015 - 52
JED - December 2015 - 53
JED - December 2015 - 54
JED - December 2015 - 55
JED - December 2015 - 56
JED - December 2015 - 57
JED - December 2015 - Jamming Down Under
JED - December 2015 - 59
JED - December 2015 - 60
JED - December 2015 - 61
JED - December 2015 - 62
JED - December 2015 - 63
JED - December 2015 - 64
JED - December 2015 - 65
JED - December 2015 - 66
JED - December 2015 - 67
JED - December 2015 - Commercial Airliners: Still Vulnerable to MANPADS
JED - December 2015 - 69
JED - December 2015 - 70
JED - December 2015 - 71
JED - December 2015 - 72
JED - December 2015 - 73
JED - December 2015 - 74
JED - December 2015 - 75
JED - December 2015 - New Products
JED - December 2015 - 77
JED - December 2015 - Threat Monitor
JED - December 2015 - 79
JED - December 2015 - 80
JED - December 2015 - 81
JED - December 2015 - EW 101
JED - December 2015 - 83
JED - December 2015 - 84
JED - December 2015 - 85
JED - December 2015 - Report from the 2015 AOC Pacific Conference
JED - December 2015 - 87
JED - December 2015 - 88
JED - December 2015 - 89
JED - December 2015 - Report from the 2015 AOC CEMA Conference
JED - December 2015 - 91
JED - December 2015 - 92
JED - December 2015 - AOC News
JED - December 2015 - 94
JED - December 2015 - 95
JED - December 2015 - 96
JED - December 2015 - Index of Advertisers
JED - December 2015 - JED Quick Look
JED - December 2015 - cover3
JED - December 2015 - cover4
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