JAXA selects Spirent for Multi-GNSS Testing
To further the development of the Quazi-Zenith Satellite System (QZSS) program, the Japanese Aerospace Exploration Agency (JAXA) has selected Spirent Communications’ testing solutions to verify performance of its satellite receivers. JAXA is using Spirent’s GSS8000 Multi-GNSS Constellation Simulator.
Japan keen to own navigation satellite system
Japan is considering launching new satellites to establish its own global navigation satellite system (GNSS) in a bid to reduce its reliance on GPS network. The country aims to make it 10 times more accurate than GPS. The satellites would be of the same type as the so-called quasi-zenith satellite, Michibiki, or of a geostationary type. The project is being drafted by the Strategic Headquarters for Space Development headed by Naoto Kan, Prime Minister, Japan.
Law to ensure optimum use of geospatial tech in Delhi
A year after the Delhi government, India, launched its much-publicised INR 120-crore geo-spatial project to map the land and utility service records of the city, it has been observed that its officials prefer sticking to the old ways. Hence the Delhi State Government is now planning to enact a law to ensure that its officials use the technology in everyday applications.
Wikileaks syndrome affects Galileo project
Berry Smutny, CEO of OHB-System, has lost his job because of Wikileaks. He was reported in a Wikileaks’ cable to have told US diplomats that Europe’s Galileo satellite-navigation project was a “stupid idea”. Although Smutny has denied the cable’s contents, OHB’s board has decided to remove him from his post.
GNSS and the GNSS market.
Indicates significant growth.
And immense potential,
In different and emerging application segments
In the world that is developed
And also, that is developing.
The technology is setting a stage.
To change our lives.
In the decade,
That, apparently, belongs to GNSS.
Assuming requisite ingredients
remain available.
May all of us have a happy year 2011.
Volume VII, Issue 1, January 2011
Zip
The decade belongs to GNSS
Boris Kennes, Justyna Redelkiewicz Musial
GNSS spoofing analysis by VIAS
Jyh-Ching Juang
Mass market receiver for static positioning
Marco Piras, Gianluca Marucco, Alberto Cina
Status of the GNSS Transmitter-Based Approach for Indoor Positioning
Anca Fluerasu, Nabil Jardak, Alexandre Vervisch-Picois, Nel Samama
Indian plan for Satellite-Based Navigation Systems …
February 2011
ILMF 2011
7 – 9 February2011
New Orleans, LO, USA
www.lidarmap.org/ILMF.aspx
16 International Geodatic Week
13- 19 February 2011
Obergurgl, Austria
www.geodaesie.uibk.ac.at/obergurgl.html
March 2011
The Munich Satellite Navigation Summit 2011
1-3 March
Munich, Germany
www.munich-satellite-navigation-summit.org
GEOFORM-2011
15-18 March
Moscow, EcoCentre Sokolniki
www.geoexpo.ru/defaulteng.stm
April 2011
6th National GIS Symposium in Saudi Arabia
24-26 April
Khobar, Saudi Arabia
www.saudigis.org
Geo- Siberia 2011
27-29 April
Novosibirsk, Russia
www.geosiberia.sibfair.ru/eng/
May 2011
ASPRS 2011
1 – 5 May
Milwaukee, Wisconsin, USA
www.asprs.org/milwaukee2011/
Gi4DM 2011
3 – 8 May
Istanbul, Turkey
www.gi4dm.org
FIG Working …
A metric, Vulnerability Index Against Spoofing, is proposed and used to assess the effectiveness of a spoofer. The GNSS (Global Navigation Satellite System) positioning is known to be vulnerable to interference due to the long distance of radio-signal travel and the resulting low signal power. In the presence of interferences or spoofing, the GNSS navigation performance is likely to be degraded and the navigation function may even be incapacitated. Throughout the years, many GNSS interference mitigation techniques have been developed.
GPS receivers are able to be employed in the survey field as low cost sensors or for applications where it is necessary to have a good ratio between cost and benefits. Nowadays, there are several low cost GPS receivers able to provide both pseudorange and carrier phase measurements in the L1band, that allow to have good real-time performances in outdoor condition. The present paper describes a set of dedicated tests in order to evaluate the positioning accuracy in static conditions.
A very interesting feature of the transmitter approach is the possibility to locate transmitters underneath the receiver. The transmitter-based approach is an indoor positioning method, based on the use of a local infrastructure, aiming to provide accuracies of 1 to 2 meters. The GNSS signals are received by an outdoor antenna located in a place with an unobstructed view of the satellites. Note that another possibility is to use a GNSS signal generator (generating one or 4 satellites) instead of the outdoor antenna.
(5.00 out of 5)