— Michael Shaw, Director of the National Coordination Office for Space- Based Positioning,
Navigation, and Timing (PNT), on the availability of GPS signals around the world
What’s new in the U.S.
space-based PNT policy
released in 2004?
The previous policy published in 1996
was titled the “U.S. GPS Policy”. If you
look back in the 1990’s, GPS was the
only large constellation of navigation
satellites providing full, worldwide
service. Since then, the world’s landscape
has significantly changed in space-based
PNT. Russia, Japan, Europe, India, China,
and other nations have become involved
in various efforts. In addition, many new
augmentation systems came online within
the United States and internationally.
We recognized GPS was not the only
system, so the policy became the “U.S.
Space-based PNT Policy.” It addresses
GPS, U.S. augmentations, and all
similar systems. We also recognized the
increasingly critical role of PNT to our
nation, so a National Executive Committee
was established at a very senior level to
provide leadeship on space-based PNT
matters. One of the goals of the 2004
policy is to provide services that are at
least competitive with other systems,
while promoting interoperability andcompatibility among them. Compatibility
means systems do no harm to each other,
and interoperability means the signals
of all the systems can be used together.
The intent of the new policy is to ensure
we provide our services effectively
and efficiently and to emphasize
cooperation with other countries
fielding space-based PNT systems.
Are there are more restrictions
for other countries or is it
becoming more open?
I don’t think it is becoming more
restrictive. From the U.S. perspective,
the 2004 policy is how the U.S. intends
to effectively and efficiently manageTelecommunication Union, World
Trade Organization, and other such
bodies. In addition, an International
Committee of GNSS was recently
established that is sponsored by the
U.N. Offi ce of Outer Space Affairs.
Cooperation within these existing
structures may be suffi cient to ensure the
best results for worldwide space-based
PNT users. It is too early to consider
creating a separate egulatory body.
There is a general impression
the U.S. can switch GPS on
and off at will or by action
by the Pentagon. Is that how
the GPS system works?
Absolutely not. Unfortunately, that
misperception has become a bit of a
myth or media “legend.” In reality, since
GPS became fully operational in 1995,
it has never been switched off. That
includes during the September 11, 2001,
terrorist crisis and during the ongoing
confl icts in Iraq and Afghanistan.
From a practical perspective, if the U.S.
were to switch GPS off, we would be
switching it off for ourselves, too. That
would do as much if not more harm to
the U.S. GPS cannot be electively turned
off by region; either everybody gets it
throughout the world or nobody does.
As demonstrated over the past 14 years,
the U.S. remains committed to providing
uninterrupted, reliable service throughout
the world for peaceful purposes.
But aren’t other countries
developing their own systems
because of the perception the
U.S. can switch off GPS?
That certainly could be part of their
motivation. Regardless, the U.S. has
committed to providing a worldwide
utility, free of direct user fees. The
U.S. has met that commitment for
more than a decade, and will continue
to meet it in the future. We are also
committed to cooperation with other
space-based PNT providers to ensureour own activities and how we represent
the national policy externally. Again,
national PNT policy reiterates many
of the same policies we’ve had in
effect since the mid 1990s. World-wide
acceptance of GPS has been largely due
to stable, predictable U.S. policy and
very dependable performance by GPS.
The U.S. will continue to modernize
and improve GPS while recognizing
that other countries will pursue their
own interests. However, the U.S. policy
emphasizes partnership and cooperation,
not competition or confrontation, with
other space-based PNT providers. The
goal is compatibility and interoperability
among space-based PNT services. We have
made a considerable effort to communicate
this policy to the international
community and will continue to do so.
What do you think about
the Galileo program?
Galileo is a planned system that has a
number of unresolved issues, including
adequate funding. The EU is trying to
do many difficult things in order to field
the system by mid-decade. The process
is extremely complex and challenging.
We are watching the program with great
interest, as it has the potential to impact
the global user community, commercial
markets, and national security interests.
The U.S. already has formal agreements
in place regarding cooperation with the
EU and the Galileo program. As Galileo
continues to evolve, we will continue
to watch to ensure the U.S. goals of
compatibility, interoperability, open
market access, etc., are still served.
What is your estimate about
Galileo being perational?
I have often said that I believe Galileo
will happen; the only issue is what it willcompatibility and interoperability so
worldwide users have access to the
best possible space-based positioning,
navigation and timing services.
Is GPS III a natural
evolution process or is it
a reaction to Galileo?
GPS III is a natural evolution based on
the U.S. commitment to provide the best
possible worldwide PNT services.
The primary motivation for GPS III is tobe and when it will become operational.
We’ve seen EU/EC officials quoted
recently stating a best case scenario of
somewhere in the 2012 to 2014 timeframe
to start initial worldwide operations.
Why did the EU propose
Galileo when the U.S.
already had GPS in place?
Many countries are recognizing spacebased
PNT is a very important technology
for both economic and security reasons,
and they want to chart their own paths
for using space-based PNT systems. I
believe there is a view that if a nation
wants to be a leader on the world stage
that you must participate as a provider
in space-based PNT services.
Looking to the future, the U.S. will
continue to do provide civil access to GPS
services, without direct user fees, as we
watch other systems develop throughout
the world. The U.S. will continue to
do what we’ve done over the past 10
years, which is to maintain a very stable,
predictable, cooperative national policy.
We will continue to provide reliable,
accurate, timely, and ever improving
GPS and other space-based services.
Given the number of
navigation systems, do
think there is a need for
a regulatory body?
I do not think that space-based PNT
systems need to be “regulated” per se. To
enhance compatibility and interoperability,
there is value in promoting certain
technical design standards, but this is
already being accomplished through both
multilateral and bilateral cooperation.
They are already subject to international
rules under the International Civil
Aviation Organization, Internationalensure uninterrupted PNT services remain
available, while incorporating improved
technology. Whether or not other systems
existed, the U.S. would still continue to
sustain and improve GPS, and there would
be successive generations of improved
GPS space vehicles and services. However,
competitiveness and interoperability with
other systems is certainly an important
consideration for future generations
of satellites, including GPS III.
It is important to note the U.S. is already
launching new satellites with improved
signals and services, prior to GPS III.
Three GPS IIR-M satellites are on
orbit, featuring a second civil signal
for improved user performance. The
GPS IIF series of satellites will begin
launching in late 2008, and will have
an additional third civil signal designed
for safety-of-life navigation purposes.
The entire world has benefited
by the free service that the
U.S. has provided. When
there is a doubt on the
intention itself, do you think
it shows lack of gratitude?
I believe the vast majority of users around
the world trust the U.S. to continue
providing a reliable, continuous GPS
service. Otherwise, they would not be
making such huge investments in critical
infrastructures (telecommunications,
transportation, power distribution, etc.)
that depend on GPS. The voices of fear,
uncertainty, and doubt that you hear
from time to time come from very small factions to promote their own agendas.
The U.S. has made, and will continue to
make, GPS technology publicly available,
and will continue to advocate cooperation,
compatibility, and interoperability with
systems operated by other space-based
PNT providers. If you want a realistic
gauge of international user sentiment,
just look at the global sales figures for
GPS equipment – over $25 billion dollars
per year with projections of doubledigit
growth rates in the years to come.
The U.S. PNT policy is two
years old. Have you done any
assessments of its impact?
Policy assessment is one of the functions
of the National Coordination Office.
We have taken an in-depth look at the
policy and concluded that we are making
good progress in meeting the goals and
objectives of the 2004 policy. The unified
effort to provide a global gold standardfor PNT services is being met. We have
established meaningful cooperation with
many nations to ensure compatibility
and interoperability between their
space-based PNT systems and GPS.
The U.S. government is taking steps
to ensure we continue to provide
uninterrupted, accurate, reliable and
dependable space-based services while
continuing to evolve and improve GPS
performance in the future. In short,
the U.S. National Policy is working.
What do you think about
China recently shooting
down a satellite?
There is a lot of concern around the
world about that type of activity for
a variety of reasons. The entire space
community is very concerned, because
there is a tremendous amount of debris
in orbit. Debris is dangerous for all
satellites, regardless of type or function.
Michael Shaw
is the Director
of the National
Coordination
Office for Space-
Based Positioning,
Navigation, and
Timing (PNT).
He is responsiblefor carrying out the ission,
objectives, and goals of the U.S.National Space-Based PNT Executive
Committee in accordance with the
U.S. Space-Based PNT policy.
In addition, he facilitates
information sharing, coordination,
and issue resolution regarding
Department and Agency program
plans, requirements, budgets,
and policies for operation of U.S.
space-based PNT systems and
services. Lastly, he represents
the Executive Committee on
space-based PNT matters within
the Government, the public
sector, and with representatives
of foreign governments and
international organizations.
Previously, he was the Director
of Navigation and Spectrum
Policy in the Offi ce of the Under
Secretary of Transportation for
Policy at the U.S. Department
of Transportation. He oversaw
implementation of the policy and
planning of the Transportation
Department regarding navigation
systems and spectrum. This includedparticipating in international
negotiations involving GPS and
its augmentations including the
Wide Area Augmentation System
(WAAS), Local Area Augmentation
System (LAAS), and the Nationwide
Differential GPS (NDGPS) System.
Shaw was a career navigator in
the US Air Force where he was a
Weapon Systems Offi cer in the F-
4 Phantom aircraft. Later, he was
also the Director of Operations,
and later, the Commander of the
2d Satellite Operations Squadron,
which is responsible for the
command, and control of the GPS
satellite constellation. He was
also assigned to the Offi ce of the
Assistant Secretary of the Air Force
for Space where he developed and
coordinated Air Force space policy,
planning, and strategy for various
space systems to include GPS.
Following retirement from the Air
Force, he served as the Project
Lead for GPS Implementation in
the Federal Aviation Administration
(FAA) where he planned and directed
satellite navigation policy within
the FAA. Following that, Shaw was
the Assistant for GPS, Positioning,
and Navigation in the Offi ce of the
Assistant Secretary of Defense for
Command, Control, Communication,
and Intelligence (C3I) where he
developed and coordinated policy,
planning, and strategy for GPS
in the Department of Defense.