|
A cross section of views by leading experts on the possibilities
and priorities in Geomatics and GNSS in the year ahead |
|
| The cell phone GPS
market is growing huge |
 |
Akio Yasuda
Professor
Laboratory of
Communication
Engineering,
Tokyo University
of Marine Science and
Technology, Tokyo, Japan |
|
QZSS is a Japanese Satellite System
to augment the performance of
GPS positioning. It was expected to
provide the services of positioning,
communication, and broadcasting.
The schedule of the development
delays for waiting the decision of
the private sector to invest the new
data service. But they gave up the
communication and broadcasting
services which are originally
planned to be installed to QZSS
early last year. The first satellite
shall be launched in the summer of
2009 being prepared by JAXA (Japan
Aerospace Exploration Agency). And
after proving the effectiveness by the
first satellite, the following satellites
will be launched and the full system
will be furnished: i.e. the users will
be able to receive the signals from the
zenith continuously for 24 hours.
It will transmit the L1-SAIF (L1-
Submeter-class Augmentation with
Integrity Function), which provide
the correction data at 250 sps of code ranging to obtain sub-meter positioning
accuracy besides the supplement
of the modernized GPS signals.
It will also provide the data through
the LEX (experimental signal with
higher data rate of 2kbps of message),
compatibility with Galileo E6
signal at 1279 MHz. This channel
will be devoted to the transmission
of the carrier measurements data
for RTK-GPS positioning.
The format of the L1-SAIF is
followed by SBAS data, but the data
is designed specifically for Japanese
area. It has been tested experimentally
and proved to the performance of
sub-meter accuracy. The test will
be continued to complete the total
system, including the user segment,
until the end of 2008. The LEX will
convey the data for the network-based
RTK-GPS usable all over the Japanese
Islands. The details, including the
format, are under examination. The
applications of the GPS positioning
using QZS to the various fields
are now under development.
As for the user segment, it will be
requested from this April to add
the positional data in sending the
emergency messages by cell phones
(so called Japanese version of E-911).
It means that all the cell phones must
have the positioning function. The
environment of the GPS reception
in the urban area is usually poor and
signals are weak with sever multipath.
The high sensitive GPS receivers
with low cost are installed for the
first generation of cell phone with
GPS. The sever multipath must
be reduced to get very accurate
positioning. The improvement of
GPS itself is continuing. The cell
phone GPS market is growing huge,
as more than 10 million cell phones
will be replaced by newer versions
every year. The desire for highly
accurate positioning with lower cost
never stays. The higher the accuracy,
the wider the application fields. The
carrier phase positioning with cm
level accuracy including new GNSS,
such as Galileo and QZSS, is being
examined for higher performance. |
|
| |
| Competition and
harmonization is
expected in GNSS |
 |
Prof Sang Jeong
Lee
Chungnam National
University, Korea
With the successful take-off of Galileo
and renewed GLONASS, competition
and harmonization is expected in
GNSS. Since most countries |
rely on
external systems for PNT services, they are likely to want to involve
in the operation of GNSS through
international cooperation as national
PNT infrastructure dependence grows
rapidly. Korea also will want to find
ways for international cooperation
with GPS, Galileo and QZSS. With
modernized GPS signals, renewed
GLONASS and the Galileo ICD, the
convergence trend in IT-related market
will be accelerated through addedvalue
by GNSS especially in wireless
and location-based service market.
In this kind of digital convergence
market, safety and security are the
most important impact factor. In this
regard, technology challenges can
be found in interference mitigation,
integrity monitoring, and antispoofing
for civil applications. |
|
| |
| Geomatics education
needs attention |
 |
Ian Dowman
President,
International Society for
Photogrammetry and
Remote Sensing (ISPRS)
If there is one aspect of Geomatics
which needs attention in 2007 it is education; |
or more specifically funding for education. Education
is needed at many levels: basic
training of technicians: education and
training of specialists, development
of management skills, and education
of decision makers. Geomatics offers
tools which can work towards solutions
of many of the problems facing
society today, but there are not enough
educated geomatics professionals
in the right places to show decision
makers that this is the case. There
are many excellent institutions in the
developed and developing world which
are training and educating people in
the skills of acquiring, analyzing, and
managing geospatial data, but in many
cases these organisations are threatened by closure or amalgamation because of
too few students. Why is this? Often
because there are insufficient funds to
allow qualified students to attend the
courses, or because potential students
are not aware of the possibilities of
studying Geomatics and how the skills
involved can tackle the problems
which global society faces. There is a
strong emphasis in the world today on
concentrating efforts on serving society.
In developed countries, the focus is in
areas where the proper management
of geospatial data and information
can help, such as improving security,
transport, and healthcare whereas in
developing countries, the Millennium
Development Goals encapsulate these
aspirations. In either case, specialists
educated in the techniques and
practice of Geomatics and decision
makers are informed in the enormous
value of geospatial data can direct
efforts towards using the information
to help in improving society.
Expansion of education and
collaboration between organisations
is the key to better use of
geospatial data to serve society. |
|
| |
| More cooperation
between providers |
 |
Dick Smith
President
International
Association of
Institutes of
Navigation The inexorable advance of technology
will continue to the benefit of GNSS
and its applications. There will be
|
more co-operation between providers
to the benefit of users worldwide. This
will be evident in the work of new
International Committee on Global
Navigation Satellite Systems (ICG).
Established last year, the ICG starts
its programme of work in 2007. There
will be no fanfares from this United Nations body but instead steady, quiet
progress to promote the global use and
application of GNSS. The committee
aims to encourage co-ordination
among providers, ensuring greater
compatibility and interoperability, and
to promote the introduction of GNSS,
particularly in developing countries. An
ambitious work plan has been drawn up
including consideration of standards,
provision of information and regional
reference systems, with currently 5
working groups to lead in each area.
The ICG will make decisions through
consensus. These decisions will not
create legal obligations and will be
acted upon at the discretion of each
member i.e. the committee is advisory,
only providing co-ordinated expert
advice. I expect its recommendations
will be carefully considered since all
the GNSS providers are members. |
|
| |
| Emerging wireless
applications |
 |
Professor Gerard Lachapelle
CRC/iCORE
Chair in Wireless
Location, Dept of
Geomatics Eng,
University of Calgary |
Some of the major GNSS
developments that will have a major
impact on geomatics in the year
2007 will include the following:
The structures of GPS L2C and
L5, Galileo and GLONASS signals
will continue to yield innovative
signal processing methods that will
improve measurement performance,
both outdoor and indoor.
Commercial GNSS equipment
and software that can make and
process measurements on GPS
L1/L2C and GLONASS will
become widely available.
The impact of several additional
GPS satellites with L2C capabilities
on navigation and positioning
performance will start to become
significant in view of the addition of a
second frequency. As the GLONASS
constellation becomes increasingly
populated, its impact on availability,
accuracy, and reliability will become
correspondingly become significant
for a number of applications.
Thanks to growing markets and intense
competition among manufacturers,
improvements of GNSS signal tracking
under attenuated conditions such
as indoor will improve by several
dBs. This enhancement, coupled
with increasingly low chipset power
requirements and advances in signal
processing, will result in new and
far reaching wireless applications. |
|
| |
| A transitional year
towards larger
accomplishment |
 |
John W Lavrakas
President
Advanced Research
Corporation and
President, Institue
of Navigation
for 2007
John.Lavrakas@ad
vancedresearchcorp.com |
For those of us in the field of satellite
navigation, the future looks extremely
promising. Why, just in the next five
years, we will see the build-out of
the Galileo system, the completion of
the Russian GLONASS system, the
beginnings of GPS dual frequency
and triple frequency operation, and
the launch of the Chinese Beidou
(Compass) system. What of those who
cannot wait?
What is to be expected
this year?
Here is my prediction of what will transpire in 2007. I believe this year
will be one of transition, in which
we begin the move toward these
larger accomplishments expected
in the next five to ten years. . Further announcements on China's
Compass system - last November,
China announced plans to deploy
its own 35-satellite navigation
system, but did not supply many
details. This year, as questions
are put forward, I believe China
will provide more detail on their
plans, including a more detailed
timeline, service description,
and discussion on compatibility
with other GNSS systems.
. Launch of two or more GPS
satellites having the new L2C
civil signal - the US Government
will have at least two more Block
IIRM satellites in orbit, perhaps as
many as five additional satellites.
. Launch of second test satellite for
Galileo - Galileo has committed
to launch its second test satellite
this year, which may include
additional capabilities not
found in its first, GIOVE-A.
. Launch of three (possibly
more) GLONASS satellites
- GLONASS will continue to
add satellites as it moves towards
its stated goal of full operational
capability with 24 satellites by
2009. The newer satellites have
improved performance and a
longer design life, resulting
in a more stable constellation
and improved accuracies.
. Alignment of GLONASS with
GPS/Galileo on use of CDMA
- GLONASS officials have
indicated they are considering
a shift from FDMA to CDMA
architecture. Perhaps we will
hear more about this in 2007.
. Additional international
agreements on GNSS (as transpired
last year with Galileo and GPS)
- I expect we will continue to see
more agreements announced as
countries sign on to service with
Galileo, GPS and GLONASS.
|
|
| |
| Customer demand to
drive geomatics |
 |
Vanessa Lawrence
Director General
and Chief Executive,
Ordnance Survey
Customer demand will still drive
geomatics technologies. In Great Britain, we will see this in the continued |
commercialisation by business partners
of Ordnance Survey’s national GPS
infrastructure and the development of
interoperable standards in surveying and
recording of underground utility services. I believe 2007 will see public services
and businesses increase their use of
national geographic information (GI)
in mainstream applications, deriving
even greater efficiencies for their users.
For the wider public too, there is
growing exposure of the power of
easy-to-use GI tools on the internet
to help visualise and interpret vital
information, such as route finding
applications, local council services,
and environmental data. Boosted by
this, the geomatics industry now has an
excellent opportunity to demonstrate
that all kinds of decision-making
can be truly enhanced through GI.
To derive maximum benefit for
everyone, we as the industry, must
collectively champion and promote
a coherent, systematic approach to
GI management based on ICT best
practice. In 2007, the UK Government
will be presented with a co-ordinated
strategy for GI initially for the public
sector but hopefully to be adopted
by the private sector as well. If the
strategy implementation is funded
and successfully implemented, I
hope the use of GI will be embedded
throughout both the public and private
sectors as a normal decision-making
tool, allowing GI to lose its 'special
and technical' tag as a subject.
|
|
| |
| January 2007 |
| |
|
|
|