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.
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.
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
By 2020, Glonass
should reach a global positioning accuracy of 60 cm.
Previous Elf receivers were solid performers, but the new receiver with both GPS and GLONASS
step up performance to an even higher level.
"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.
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.
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.
The GPStation-6 provides signal tracking, ionospheric scintillation and TEC measurements for all current and upcoming GPS, Glonass
, Galileo and Compass satellitesignals.
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).
or GLO bal NA vigation S atellite S ystem is Russia's equivalent of the US's GPS