We reposition satellite-based augmentation system (SBAS) to improve the performance of global navigation satellite systems (GNSSs). A Satellite-based Augmentation System (SBAS) supports wide-area or regional augmentation through the use of geostationary (GEO) satellites which broadcast. The European Geostationary Navigation Overlay Service (EGNOS) is Europe's regional satellite-based augmentation system (SBAS) that is used to improve the performance of global navigation satellite systems (GNSSs), such as GPS and Galileo. It has been deployed to provide safety of life navigation services to aviation, maritime and land-based.

 
   

 

       

 

 

GNSS Systems
One of the first GNSS systems is the well-known American based Global Positioning System (GPS). Since GPS is not the only available network, the term GNSS is used to describe all the combined navigation networks globally. This term includes Russia’s GLONASS, China’s BeiDou-2 and the European Galileo.

Sensor fusion
The Xsens onboard sensor fusion algorithm combines all these measurements, ensuring the best performance and the least amount of drift with and without external reference. Through combining GNSS, INS and AHRS techniques that enhance each other, Xsens is able to provide powerful navigation solutions.

         

Benefits of Satellite-Based Augmentation Systems

What is GNSS and how it works

What is Galileo

  • Satellite-Based Augmentation (SBAS) provides accurate location data relative to standard GPS;

  • SBAS uses ground stations and satellites together;

  • SBAS is likely to have enhanced economic and navigational benefits this decade;

  • Satellite-Based augmentation system (SBAS) services provide capabilities to improve location data for normal and more developed global positioning system (GPS) devices. The global navigation satellite system (GNSS) signals received in normal GPS devices can be improved from several meters accuracy to sub-meter accuracy, making it closer in accuracy as some GPS methods such as differential GPS (DGPS).

  • For users, SBAS satellites operate as any other GPS satellite and signal data are given albeit at a much higher accuracy level than standard GPS. While many existing GPS receivers are SBAS compatible, more advanced uses of SBAS may require new hardware and software.

     

GNSS/INS

Xsens designs and develops Attitude and Heading Reference Systems (AHRS). In order to improve the performance of these AHRS systems, an Inertial Navigation System (INS), which uses angular velocity and acceleration data from an Inertial Measurement Unit (IMU), can be used to compute a relative position over time.

Because the INS provides a relative position with respect to an initial starting point, it will eventually drift from its true position quickly when no external reference is provided. Global Navigation Satellite System (GNSS) support can be included to provide this reference.

The Xsens on-board sensor fusion algorithm combines all these measurements, ensuring the best performance and the least amount of drift with and without external reference. Through combining GNSS, INS and AHRS techniques that enhance each other, Xsens is able to provide powerful navigation solutions.

         

NigComSat-1R

Nigerian Satellite Augmentation System (NSAS) is a System meant to close the gap and meet the need of an augmentation system in the African continent. It is a Navigation Overlay Service (NOS) similar to European Geostationary Navigation Overlay Service (EGNOS), a regional SBAS that is used to improve the performance of global navigation satellite systems (GNSS), such as GPS and Galileo, deployed to provide safety of life navigation services to aviation, maritime and land-based users over most of Europe, among others.

 

The NigComSat-1R Navigation Overlay Service can improve the accuracy and reliability of GNSS positioning information, and provides a crucial integrity message regarding the continuity and availability of the signal across the sub-Saharan African region. It can address the insecurity in Nigeria and also greatly improve revenue stream by providing essential range of applications across numerous market segments:

  • Security

  • Drones Application and Deployment

  • Agriculture

  • Aviation

  • Location-Based Services (LBS)

  • Mapping and Surveying

  • Maritime

  • Roads

  • Railways

  • Disaster and Weather Management

  • Timing and Synchronisation

  • Broadband

  • Global Macro-trend Opportunities

     

Repositioning the Nigerian communications satellite NigComSat-1R to better performance

The geosynchronous communication satellite NigComSat-1R, which was launched on 19th of December 2011 in Xichang, China as an improved replacement of NigComSat-1, built to provide domestic broadband, bandwidth leasing, broadcasting, navigation and other value added services for homes and businesses in rural and urban areas and provide international satellite services across West, Central, South East Africa, Europe and Asia; and how positioning its satellite-based augmentation system (SBAS) can improve the performance of global navigation satellite systems (GNSS), serving as an augmentation, or overlay to improve the accuracy and reliability of GNSS positioning information, and providing a crucial integrity message regarding the continuity and availability of the signal across the sub-Saharan African region. This will create the biggest revenue stream for Nigerian communications satellite ltd among others.


Composed of a network of around forty elements distributed across Europe to record, correct and improve data from the US GPS, EGNOS provides modified signals relayed by geostationary satellites to users’ receivers. EGNOS offers an accuracy of better than two metres, compared with the 15 to 20 metres for GPS signals, with an added guarantee of the quality of the signals. Since the geostationary satellites that relay EGNOS cover Africa as well as Europe, an extension of EGNOS may easily be envisaged with the installation of reference stations on African soil.

 

iNetworks Canada is perfectly positioned to help Nigerian Communications Satellite improve its Efficacy in operational solution in the Global Positioning Satellite Systems (GNSS) Industry.

         

     

Copyright ©  2003, updated 2016 - www.inetworkscanada.com/

[VegaWorks Ltd is a division of iNetworks Canada offering Technology Services to Africa]