Editor-in-Chief: Carolyn P. McDonald  (send news items to cmcdonald@navtechgps.com)

Technical Editor: Keith D. McDonald (satconsult@aol.com)

Production & Design: F'Lynne Didenko (fdidenko@navtechgps.com)

Welcome to "GPSetc.com News" published by Navtech Seminars & GPS Supply - your source for GPS/GNSS news!  To see previous newsletters, go to our newsletter home page.  

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Included in this Newsletter: 
(click on hyperlinks below to jump to news items)

1) GPS Constellation Status & Launches

2) GLONASS Status

3) Galileo Reference Links

4) Register for Navtech's June Courses in Annapolis  
    - Look for Our Postcard!

5) Global Locate, CTIA W2002 Live Demos

6) For People Interested in Timing

1) GPS Constellation Status & Launches
 

GPS OPERATIONAL ADVISORY            108.OA1 SUBJ:       GPS STATUS         18 APR 2002 1. SATELLITES, PLANES, AND CLOCKS (CS=CESIUM RB=RUBIDIUM): A. BLOCK I :  B. BLOCK II:  PLANE :  CLOCK :  BLOCK II:  PLANE :  CLOCK :  NONE PRNS SLOT  PRNS  SLOT     1,   2,    3,     4,    5,   6,     7,    8,    9,  10,  11,  13,  14,   15 F4,  B5, C2,  D4, B4, C1,  C4, A3, A1, E3, D2,  F3,  F1,  D5 CS, CS, CS, RB, CS, CS, RB, RB, CS, CS, RB, RB, RB, CS  17,  18,  20,   21, 22,   23,  24,   25, 26,   27,  28,  29,   30,  31 D3,  E4,  E1,  E2, B1,  E5,  D1, A2, F2, A4,  B3,  F5,  B2, C3 RB, RB, RB, CS, RB, CS, CS, CS,  RB, CS, RB, RB, RB, CS

[Information courtesy of USCG NAVCEN. Click HERE for the latest constellation status posting. Click HERE to subscribe to the GPS status message list.]

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SCHEDULED GPS LAUNCHES:  [the following launch information is quoted with permission from http://www.spaceflightnow.com ] May 8 Delta 2 • GPS 2R-8  Launch time: approx. 2017 GMT (1617 EDT)  Launch site: SLC-17, Cape Canaveral Air Force Station, Florida Boeing Delta 2 will launch the NAVSTAR Global Positioning System 2R-8 military navigation satellite. The launch will be run by the U.S. Air Force. The rocket will fly in the 7925 vehicle configuration. Launch date slipped from June 11; then from Aug. 16 since the GPS constellation is healthy and didn't need replacement satellite at that time. NASA has moved ProSEDS from this mission to a later Delta 2 launch. Then delayed from March 6 and April 29. [info. last updated March 27] [http://www.spaceflightnow.com/tracking/index.html] ~~~~~~~~~~~~~~~~~~ July 25 Delta 2 • GPS 2R-9  Launch window: TBD  Launch site: SLC-17B, Cape Canaveral Air Force Station, Florida Boeing Delta 2 will launch the NAVSTAR Global Positioning System 2R-9 military navigation satellite. The launch will be run by the U.S. Air Force. The rocket will fly in the 7925 vehicle configuration. The second stage will carry NASA's Propulsive Small Expendable Deployer System (ProSEDS) as a secondary payload. Decision to fly ProSEDS on this flight was made once the Air Force determined whether this will be an ascending or descending node launch. ProSEDS requires ascending node. Delayed from May 16. [info. last updated Feb. 11] [http://www.spaceflightnow.com/tracking/index.html] ~~~~~~~~~~~~~~~~~~ Oct. Delta 2 • GPS 2R-10  Launch window: TBD  Launch site: SLC-17, Cape Canaveral Air Force Station, Florida Boeing Delta 2 will launch the NAVSTAR Global Positioning System 2R-10 military navigation satellite. The launch will be run by the U.S. Air Force. The rocket will fly in the 7925 vehicle configuration. [info. last updated Dec. 29] [http://www.spaceflightnow.com/tracking/index.html]

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3) Galileo Reference Links

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4) Register for Navtech's June Courses in Annapolis!     - Look for Our Postcard!

Navtech's Courses in Annapolis, Maryland June 17-21, 2002

I) Course 100: Basics of GPS (June 17) - same as Day 1 of Course 135

II) Course 135: Practical GPS for Professional Users (June 17-19)

III) Course 218: Indoor GPS - Wireless Aiding & Low SNR Detection (June 20)

IV) Course 447: Applied Kalman Filtering (June 17-21)

V) Course 536: Advanced Integration of GPS and INS (June 18-20)

To browse our course outlines and for specific information about course locations, our 2002 schedule, or to register on-line, click HERE.

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5) Global Locate, CTIA W2002 Live Demos
 
Global Locate live demos of IndoorGPS chip at CTIA W2002

Precise location technology demonstrated live inside CTIA convention center

Orlando, Florida. – Mar. 20, 2002 – Global Locate Inc. today completed three days of successful demonstrations of the new IndoorGPS™ GL-16000 chip at this week’s CTIA W2002 convention.

The indoor-capable GPS receiver operated successfully in most areas inside the Orange County Convention Center, the site of this year’s show. The device correctly computed positions in the lobbies, in some meeting rooms, and inside most of the exhibit hall itself.  

"As far as we know, this was the only technology actually delivering locations inside the exhibit hall," said Dr. Frank van Diggelen, Marketing Vice President of Global Locate, "there were other location technologies on display, but none other computing positions inside the convention center."

The demonstration unit built by Global Locate has the GL-16000 chip integrated with a GSM wireless modem. The chip acquires GPS satellite signals, then using a wireless data link the information is provided to a remote server that displays the location on a map. The map can be accessed from any authorized web browser and was on display at the Global Locate booth throughout the show, showing live updates of the device as it was carried around the building.

The exhibit hall in question has a metal roof, and no windows nor other openings providing line-of-sight views to the sky. The GPS signals are acquired inside this hall thanks to the high sensitivity of the GL-16000 chip designed by Global Locate, and manufactured by Fujitsu. The GL-16000 chip has processing gain of 30dB (one-thousand times) more than standard GPS receivers.

"Our experience so far shows very reliable operation in rooms separated from the outside by one layer of wall or roof, including shopping malls, offices, houses, and above ground parking structures," said Charles Abraham, Engineering Vice President of Global Locate.  

Typical accuracy of the device is 5 to 10 meters outdoors, and 15 to 20 meters indoors, good enough to find a store inside a mall.

[Press article submitted by Frank van Diggelen 
of Global Locate Inc. http://www.globallocate.com]

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Course "Time and Time Transfer with GPS" taught by Dr. Demetrios Matsakis and a NEW course "Practical Relativistic Timing Effects in GPS/GNSS" taught by Dr. Robert Nelson will be presented at ION-GPS 2002 on September 23-24, 2002 in Portland, Oregon. More detailed information about these courses will follow in the future newsletters.

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SEND US YOUR NEWS ITEMS, WITH SOURCES! 
Carolyn McDonald, Editor

cmcdonald@navtechgps.com  

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