The Galileo and Compass Navigation Satellite Systems will benefit Global Navigation Satellite System (GNSS) users by independently providing additional satellites, satellite ranging signals, and interoperability with civilian GNSS.
As with previous products that capitalize on next-generation capabilities in advance of modernized GPS satellite launches, Trimble is pleased to announce the availability of Galileo and Compass, in addition to existing GLONASS capability in selected receivers. This latest generation of Trimble 360™ receiver technology tracks the current Compass navigation demonstration system open service signals and Galileo Giove A/B open service signals in advance of the planned operational Compass and Galileo Navigation Satellite Systems under construction. This powerful receiver technology is capable of supporting existing and planned GNSS satellite signals, including GPS, GLONASS, GALILEO and Compass, and existing and planned augmentations to these GNSS, including the Wide Area Augmentation System (WAAS), European Geostationary Navigation Overlay Service (EGNOS), Multi-functional Satellite Augmentation System (MSAS), and GPS-Aided Geo Augmented Navigation (GAGAN).
Receiver development and sale of GNSS products tracking Giove A/B satellites is unrestricted; selected receivers already ship with this capability. These receivers are capable of simultaneously tracking the open service signals, namely L1 CBOC, E5A, E5B and E5AltBOC signals. Observables from these satellites can be logged internally or streamed from the products for signal evaluation and test purposes.
The new Trimble 360 receiver technology will be capable of tracking future Galileo operational satellites and conforms to the current Open Service Signals-in-Space Interface Control Document (OS SIS ICD), Issue 1, Revision1, September 2010. Receivers based on this technology will be capable of tracking all future Open Service signals from the satellites simultaneously (L1 CBOC, E5A, E5B and E5AltBOC). The four sets of measurements can be logged or streamed and used in the position engine. Sale of receivers based on information in the Galileo ICD is subject to the licensing terms promulgated by the European Commission (EC).
There is no public Compass ICD so the current capability in the receivers is based on publicly available information1. Trimble receivers using Trimble 360 technology have tracked the B1, B2 & B3 open service signals from the Compass test satellites. Trimble researchers have successfully tracked the M1, G1, G2 and G3 Compass test satellites plus the first Inclined Geosynchronous Orbit GNSS satellite which forms part of the Compass satellite system. This latest satellite was launched on the 30th July, 2010. As the Compass signal definition is not finalized and is subject to potential change, Trimble cannot guarantee that these receivers will be fully compatible with a future generation of Compass satellites.
The first Quasi-Zenith Satellite System (QZSS) satellite was launched on September 11, 2010. Based on version IS-QZSS Version 1.2 Trimble 360 technology will be capable of tracking and using the measurements made from QZSS satellites in the position solution.
October 4th, 2010
1. Source: Stanford University Publication, "GNSS over China: The Compass MEO Satellite Codes," Inside GNSS July/August 2007
Modernized GPS satellites are now in orbit, and all of these satellites are capable of transmitting L2C signals (civilian signals on the satellite L2 carrier). These satellites represent a significant first step in the GPS Modernization program planned by the U.S.
How will the new L2C signals benefit you? Over the last decade GPS technology has helped users to increase productivity, improve efficiency, and lower costs. And now the new L2C signal promises to take these benefits a step beyond. With the new L2C signals, your L2 measurements can be more robust, making your GPS observations even more reliable. All you need to benefit from the stronger signals is a GPS receiver capable of tracking them.
Now that the first L2C satellites are in orbit, it's possible to look ahead to the next modernized GPS signal on the horizon, the entirely new L5 carrier. L5 has been introduced on a new generation of satellites called Block IIF, which began launching in 2010.
The arrival of L5 make the number of GPS carriers total three. With L1, L2, and L5 carriers available, it's anticipated that the capabilities of RTK systems will be significantly boosted and will thus provide exciting new benefits for high-precision GPS users. In addition, L5 signals provide a higher power level than the other carriers. As a result, acquiring and tracking signals will be easier.
Trimble R-Track technology, in a variety of Trimble receivers, supports GLONASS L1/L2 signals, the GNSS owned by the Russian Federation Government. In 2004 the United States and the Russian Federation issued a joint statement on cooperation, with the objective of maintaining and promoting interoperability between their two systems.
Trimble incorporates new technology when confident that it will provide surveying professionals with real field and business benefits. As evidence of this commitment to our customers, Trimble R-Track technology in Trimble receivers now takes advantage of all currently available GNSS signals, including the new the L2C and L5 signals of Modernized GPS, plus GLONASS L1/L2. Trimble R-Track technology provides outstanding quality control in computing solutions using all available signals.