Augmentation & Assistance

The System: Competition for the Gold Standard

February 1, 2014By
The main antenna of the second Galileo Full Operational Capability (FOC) satellite being inspected with a flashlight in advance of mass property testing at the European Space Agency’s  ESTEC Test Centre in the Netherlands. Thermal-vacuum testing on the second model began in early 2014. The two FOC satellites will be launched on a Soyuz rocket from Europe’s French Guiana Spaceport in mid-2014. Whether four more can rise and begin providing initial Galileo services by the end of the year is the question of the hour.

BeiDou Releases Public Service Performance Document In late December, director Ran Chengqi of China’s Satellite Navigation System Management Office announced the BeiDou Navigation Satellite System (BDS) Public Service Performance Standard. The document details the public service performance parameters of the BeiDou system, including service area, accuracy, integrity, continuity, and availability. It is a basic commitment to customers from BDS providers,... read more

This article is tagged with and posted in Augmentation & Assistance, BeiDou/Compass, Galileo, GPS Modernization, The System

GAGAN Certified for Aviation in India

January 13, 2014By

The Director General of Civil Aviation (DGCA) of India certified on December 30 the GAGAN system to RNP0.1 (Required Navigation Performance 0.1 Nautical Mile) service level, according to The Hindu. Now aircraft equipped with Satellite Based Augmentation System (SBAS) receivers will be able to use GPS-Aided Geo Augmented Navigation (GAGAN) signals in Indian airspace for en route navigation and non-precision... read more

This article is tagged with and posted in Augmentation & Assistance, Aviation, GNSS News, Latest News, Transportation News

Real-Time GNSS Activities at ESA

October 28, 2013By
The ESA Navigation Office.

The European Space Operations Centre has taken on the roles of real-time analysis center, data provider, and analysis-center coordinator for the International GNSS Service’s Real-Time Service, providing a number of products combining data streams from multiple sources. read more

This article is tagged with and posted in Augmentation & Assistance, Featured Stories, From the Magazine, Galileo

Innovation: Getting Closer to Everywhere

October 1, 2013By
FIGURE 1. Functional flow diagrams for a strapdown inertial navigation system (top) and a pedestrian dead-reckoning system (bottom).

Accurately Tracking Smartphones Indoors
If we wish to obtain consistently usable positions indoors using a mobile phone, we can augment its GPS or GNSS receiver with other unfettered sensing technologies such as gyroscopes and accelerometers supplemented by radio signals of opportunity. But is all of this actually feasible? The authors have conducted tests of a multi-system approach to positioning indoors with favorable results. read more

This article is tagged with and posted in Augmentation & Assistance, Innovation

Registration Opens for Munich Satellite Navigation Summit 2014

September 12, 2013By
ATT00001

Registration is now open for Munich Satellite Navigation Summit 2014, which will be held March 25-27, 2014, at the Residenz Muenchen in Munich, Germany. The summit will have a booth (Booth H) in the exhibit hall at the ION GNSS+ conference next week in Nashville, Tennessee. The conference is offering a special ION rate for those who register no later... read more

The System: IRNSS Signal Close up

September 1, 2013By and

IRNSS Signal Close up By Richard Langley, Steffen Thoelert, and Michael Meurer The spectrum of signals from IRNSS-1A, the first satellite in the Indian Regional Navigation Satellite System, as recorded by German Aerospace Center researchers in late July, appears to be consistent with a combination of BPSK(1) and BOC(5,2) modulation. Figure 1 shows that, centered at 1176.45 MHz, the signal... read more

This article is tagged with and posted in Augmentation & Assistance, Galileo, GLONASS, GPS Modernization, The System

Indian Regional Navigation Satellite Starts Signal Transmissions

July 25, 2013By
FIGURE 2. IQ constellation diagram of IRNSS-1A L5 signal.

By Richard B. Langley Update (July 29, 2013): The spectrum recorded by the German Aerospace Center researchers appears to be consistent with a combination of BPSK(1) and BOC(5,2) modulation. This is the signal structure that ISRO announced would be used for IRNSS transmissions in the L-band: “The IRNSS signals consist of two special services namely Standard Positioning Service (SPS) and... read more

This article is tagged with , and posted in Augmentation & Assistance, GNSS News, Latest News

Out in Front: A Star Is Born

July 24, 2013By

Welcome to the club, India, and happy Birth Day. With the July 1 launch of IRNSS-1A, India and the Indian Regional Navigation Satellite System have officially joined the GNSSS (Global Navigation Satellite Systems Society). With full membership, however, come some society duties and responsibilities. Chief and first among these is to provide all other society members and interested parties with... read more

This article is tagged with , and posted in Augmentation & Assistance, From the Editor, GNSS Opinions