GLONASS

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GLONASS

[′glō‚nas]

(navigation)

A worldwide Russian navigation system designed to use 24 satellites in three uniformly spaced orbital planes to provide three-dimensional position and velocity data to equipped users on or above the earth's surface. Acronym for global orbiting navigation satellite system.

GLONASS

(GLObal NAvigation Satellite System-GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) A satellite-based radio navigation system run by the Russian Ministry of Defense. It uses 21 MEO satellites and three spares. Similar to the global positioning system (GPS) in the U.S., GLONASS enables 3D positioning anywhere on earth within 100-150 meters for the public and 10-20 meters for the military. The first satellite was launched in 1982, and the system became operational in 1993, although the full complement of satellites was not completed until 1995. See GPS, Galileo and GNSS.

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According to GLONASS ICD 2008 the computation of the satelite positron at time t from a satellite state vector with reference time [t.sub.e] requires the numerical integration where the longest integration period recommended should be 15 min forward and backward from the current state vector.

Determination of intermediate orbit and position of GLONASS satellites based on the generalized problem of two fixed centers

Another problem that needs further investigations is usage of different PCV (Phase Center Variations) models for GPS and GLONASS. Currently, all GNSS elaborations use PCV for GPS.

Investigation of environmental influences to the precise GNNS solutions

For all selected antenna types (also for the TRM59900.00 SCIS antenna where there were no changes in the PCC model due to the switching from igs08.atx to igs14.atx), the data from the igs08.atx file were reduced to the offset values present in the igs14.atx file and then PCC differences (dPCC) were calculated for L1, L2 frequencies as well as "iono-free" (IF) combinations for both GPS and GLONASS signals.

IGS08.ATX TO IGS14.ATX CHANGE DEPENDENT DIFFERENCES IN A GNSS-DERIVED POSITION TIME SERIES

By 2020, Glonass should reach a global positioning accuracy of 60 cm.

Russia enndorses deal on space cooperation with Cuba

Previous Elf receivers were solid performers, but the new receiver with both GPS and GLONASS step up performance to an even higher level.

GPS plus glonass: reliable nay for tablets: two new WAAS GPS with GLONASS receivers from Bad Elf and Global Navigation Systems make tablet navigation convenient

"Three new Glonass satellites will be launched from the Baikonur space center on July 2," Rogozin said at a meeting with Prime Minister Dmitry Medvedev on Monday.

Russia to Launch 3 Glonass Satellites on July 2

The centers will provide services based on data received via Glonass satellites for monitoring traffic safety, road planning and transportation on federal highways as well as dangers such as landslides, avalanches and mud flow, they said.

Russia expands satellite navigation system

SIMCom Wireless Solutions [http://www.sim.com/wm ], a worldwide specialist in machine-to-machine (M2M) technology, has successfully concluded tests of SIMCom's GSM module for eCall / ERA Glonass readiness on Russia's real network.

SIMCom's 2G Module Launches eCall and ERA Glonass

The GPStation-6 provides signal tracking, ionospheric scintillation and TEC measurements for all current and upcoming GPS, Glonass, Galileo and Compass satellitesignals.

GPStation-6 GNSS now available

He also said India will be the main Russian partner in the commercialisation of the GLONASS, a space-based navigation system to rival the US Pentagon-controlled Global Positioning System (GPS).

S.M. Krishna visiting Moscow

GLONASS or GLO bal NA vigation S atellite S ystem is Russia's equivalent of the US's GPS