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March 23, 2009

GPS, GLONASS, Galileo, Compass: What GNSS Race? What Competition

(This story appears in the "GNSS World" department in the March-April 2009 issue of Inside GNSS.)

Munich’s high-level satnav summit the first week in March opened with a plenary titled, “The Worldwide Race in GNSS” and closed with a panel, “The Competition among the Big Four.”

March 6, 2009

Munich Summit Highlights Satellite Navigation Plans, GNSS Program Struggles


Highlights of the 2009 Munich Satellite Navigation Summit (March 3- 5):
Russia will place its first CDMA signal on the GLONASS L3 frequency that overlaps the European Galileo E5b spectrum; China plans to launch three Compass satellites this year and seven more next year to provide a regional capability for Compass/Beidou, followed by completion of the full 30-MEO, 5-GEO constellation after 2015 and before 2020; Galileo program discussions revealed tensions around negotiations with China about a frequency overlay of Compass signals on the security-oriented Public Regulated Service as well as the question of whether the costs to build Galileo can be kept within the €3.4-billion limit agreed by the European Council and the European Parliament; the GPS Block IIR-20(M) satellite with an L5 demonstration payload will be launched later this month in what may be the program's last chance to secure primary GPS access to the frequency.

Inside GNSS • March/April 2009

The GPS EASY Suite II: A Matlab Companion

In 2003 I published a paper called “The GPS EASY Suite — Matlab Code for the GPS Newcomer.” The paper consisted of 10 parts, which are cited in the accompanying sidebar, “EASY Suite I Topics.” Each installment included a printed text and a file of related Matlab code or scripts (an M-file) that could be downloaded from a designated web site.

February 12, 2009

New Russian GLONASS Satellites in Operation

The last of three GLONASS satellites launched December 25 began broadcasting a healthy navigation signal today (February 12), according to the Russian Space Agency’s Information-Analytical Center, bringing Russia’s operational GNSS constellation to 20 spacecraft.

One satellite, space vehicle number (SVN) 701 launched more than five years ago, has been off-line and in “maintenance” status for the last month. Another spacecraft, SVN 722, is transmitting only in the GLONASS L1 band.

Inside GNSS • January/February 2009

ICG-3: Friendly Persuasion

Sidebar: Program Updates

Representatives from the world’s GNSS and augmentation providers spent a sun-laden week in Pasadena, California, advancing aspirations for their separate enterprises while refining the basis for compatibility and interoperability among them.

Inside GNSS • January/February 2009

Autonomous Integrity

In trying to ensure integrity of GNSS navigation systems for civil aviation, various approaches have produced a range of different concepts, most of which assume the computation of a protection level. This computation is usually accomplished either autonomously (that is, entirely based on information gathered by the user receiver) or with some degree of external assistance.

Ventures • January 12, 2009

Thales Alenia Space Italia Wins Two Galileo Receiver Development Contracts

The European Space Agency (ESA) has awarded Thales Alenia Space Italia (TAS-Italia) two contracts for development of Galileo ground station receiver equipment.

One contract is for Galileo In-Orbit Validation Element (GIOVE) phase A/B ground station receivers capable of tracking the multiplex binary offset carrier (MBOC) signal that is common to both the Galileo Open Service (OS) and the new GPS L1 civil signal, which will be transmitted beginning with the GPS III generation of satellites.

New Builds • December 20, 2008

Applanix Upgrades POS, POSpac Products

Applanix Corporation has launched the POSPac MMS (Mobile Mapping Suite) 5.2, the latest release of its GNSS-aided inertial post-processing software for mobile mapping and surveying applications in multiple environments.

Applanix has announced that its POS AV products now support on-board OmniSTAR XP real-time differential GPS corrections using a purpose-built GNSS+L-band aircraft antenna and an embedded BD960 GNSS receiver.

December 26, 2008

Russia Launches Three More GLONASS-M Space Vehicles

The Russian Federal Space Agency (Roscosmos) successfully launched a Proton-M rocket and three GLONASS-M satellites at 10:53 a.m. (GMT) on December 25 from the Baikonur spaceport in Kazakhstan.

The spacecraft were placed into orbital plane 1 on the GLONASS constellation, where they will occupy slots 2, 3, and 8, according to the Roscosmos Information-Analytical Center.

December 23, 2008

International System Providers Meeting (ICG-3) Reflects GNSS’s Competing Interests, Cooperative Objectives

Representatives from the world’s GNSS system and augmentation providers spent a sun-laden week in Pasadena, California, recently, advancing aspirations for their separate enterprises while refining the basis for compatibility and interoperability among them.

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