Comments
from Keith D. McDonald, NavtechGPS'
Technical Director:
" After
extensive investigations by the E.U. to
assure that the MBOC signal would work with
Galileo, the signal structure recommended
in March of 2006
by both the United States and Europe has
been agreed upon by
both parties . This additional L1 civil
signal is to be implemented on both future GPS
III satellites and on forthcoming operational Galileo
satellites. The full text of the announcement
that was released on Thursday, July 26th can be
found at:
http://useu.usmission.gov/Dossiers/Galileo_GPS/Jul2607_Civil_Signal_Accord.asp
The signal structure,
initially recommended by a GPS-GALILEO expert
group, is a multiplexed binary offset carrier (MBOC)
signal that provides some significant
performance features. Technically, it consists
of two
"split spectrum" BOC PRN (pseudo random noise)
coded signals at
L1, each with a
1.023 MHz chipping rate. The first of
these multiplexed signals has
a 1.023 MHz
squarewave subcarrier and 10/11 of the
coded signal power. The other signal has
a 6.138 MHz
squarewave subcarrier and carries the
balance of the coded power.
Two of the principal
advantages of this signal are that it provides
superior performance in a multipath environment
and has enhanced accuracy.
The "intimate" details of the
MBOC signal structure as well as the reasons for
its origination and the related signals that
were considered are presented in an excellent
article entitled MBOC: The New Optimized
Spreading Modulation that appeared in the
May/June 2006 issue of Inside GNSS. "
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
ITEM 2) NAVTECHGPS' 21st
ANNUAL
TUTORIALS, PRIOR
TO ION GNSS 2007 ARE ON GSA!
All of our tutorials are on GSA
schedule and offer special GSA pricing and are also eligible for
our group discount!
To view our tutorial GSA pricing, please visit:
http://navtechgps.com/seminars/GPStutorials/pdf_tutorials/NavtechGPS_Tutorial_GSApricing.pdf
Browse our 32
technical tutorials to be held September 24-25 in Fort Worth,
Texas prior to the ION GNSS 2007 Conference:
http://www.navtechgps.com/seminars/GPStutorials/iongnss2007.asp
- EARLY BIRD
DISCOUNT DEADLINE AUGUST 24
- MAKE HOTEL RESERVATIONS AS SOON AS POSSIBLE FOR
SPECIAL RATES
Register for tutorials on-line at:
http://www.navtechgps.com/seminars/GPStutorials/tutreg.asp
(Register on or before August 24th
for an early bird discount!)
Make Your Hotel Reservations Online NOW
or sleep in the suburbs:
http://www.ion.org/meetings/gnss2007hotel.cfm
Separate online registration for the ION GNSS 2007
conference is available at:
http://www.ion.org/registration/
** Please note that NavtechGPS
and the ION are different organizations.
+ + + + + + + + + + + + + +
+ + + + + + + + + + + + + + + + + + + + +
AND after all the brain work come party at our famous
and 6th ANNUAL OPEN MIC
NIGHT co-sponsored this year by
u-blox
+ Septentrio
+ GPSoft + InsideGNSS + GPS World +
GPS Networking
+ NavtechGPS!
FREE admission! NO invitation
is necessary! Bring a friend!
This will be a great party
with wonderful ION GNSS
musicians. Get your act ready!!!!! Thursday, September 27
~ 7pm @ Hilton
(Crystal Ballroom D).
Detailed information:
http://navtechgps.com/seminars/GPStutorials/pdf_tutorials/NavtechGPS_IONGNSS2007_OpenMic.pdf
+
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ +
ION GNSS is the world's
largest GNSS meeting,
with the largest exhibit!
Be there for product announcements, leading edge
technical papers, and visit NavtechGPS' at booth 500-502.
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
ITEM 3)
NEWSLETTER LINKS and USEFUL WEBSITES (This is an archival list.
Please notify us if your own link changes.)
* Mr. Glen Gibbons, founding editor of "GPS World", launched a
new international trade journal, "Inside GNSS" last January.
Subscription is FREE and details can be found at
http://www.insidegnss.com
* A reliable source for Galileo information is:
http://ec.europa.eu/dgs/energy_transport/galileo/doc/com_galileo_en_final_16may2007.pdf
* The European Space Agency publishes an EGNOS newsletter that
is called EGNOS NEWS, focusing both on EGNOS and on satellite
navigation issues:
http://ravel.esrin.esa.int/docs/egnos/estb/newsletter.htm
* To view details on "GPS World" magazine, the GPS standard
since 1990, go to
http://www.gpsworld.com/gpsworld
* For the archives of the Locus Inc. newsletter on LORAN
positioning and timing, go to:
http://www.locusinc.com/loran_newsletter.html
* For the newsletter published by "Professional Surveyor"
Magazine, go to
http://www.profsurv.com/newpsm/news.php
* Continuously updated newsletter by the US Coast Guard's
Navigation Center "NAVCEN" is at
http://www.navcen.uscg.gov/
* Military and Aerospace magazine's newsletter is found at:
http://mae.pennnet.com/Search/index.cfm?Section=Archives
* Kalman filter site maintained by Gregory F. Welch, UNC, Chapel
Hill, NC is at
http://www.cs.unc.edu/~welch/kalman/
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
ITEM 4)
MEETINGS CALENDAR (2 NEW
LISTINGS)
______________________________________
September 2-9, 2007
First International Munich Summer School of GNSS
Berchtesgaden, Germany
For students, Ph.D. candidates and young university
researchers.
info@munich-satellite-navigation-summerschool.org
www.munich-satellite-navigation-summerschool.org
______________________________________
September 25-28, 2007 (NavtechGPS
Tutorials: September 24-25)
ION GNSS 2007
Fort Worth Convention Center
Fort Worth, Texas
www.ion.org
______________________________________
October
14-17, 2007
36th Annual ILA Convention and Technical Symposium
______________________________________
January 28-30, 2008 (ABSTRACTS DUE: October 5, 2007)
NEW LISTING!
ION NTM 2008
The Catmaran Hotel
San Diego, California
www.ion.org
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