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JAXA Selects Spirent Simulator for QZSS Receiver Testing
January 30, 2011

JAXA Selects Spirent Simulator for QZSS Receiver Testing

Spirent Communications’ Positioning Technology Division, Paignton, UK, has announced that the Japanese Aerospace Exploration Agency (JAXA) has selected Spirent’s GSS8000 Multi-GNSS Constellation Simulator to support further development of the Quazi-Zenith Satellite System (QZSS) program.

Responsible for the development of the initial QZSS user equipment, JAXA is using the GSS8000 to verify QZSS receiver performance.

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By Inside GNSS
Wavelets and Notch Filtering
January 9, 2011

Wavelets and Notch Filtering

FIGURE 1: Touching wavelet spectra

For the complete story, including figures, graphs, and images, please download the PDF of the article, above.

The use of GNSS for safety critical applications is gaining interest, particularly amongst aviation users, who probably have the most demanding requirements. The GNSS frequency band containing the Galileo E5 and GPS L5 signals is designated as an aeronautical radio navigation service (ARNS) band, which enjoys legal protection from other services not allocated to this frequency on a primary basis.

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By Inside GNSS
GPS Directorate Completes Annual AGER Review
December 30, 2010

GPS Directorate Completes Annual AGER Review

Col. Bernard Gruber

The GPS Directorate completed its second Annual GPS Enterprise Review (AGER) on December 17, concluding that the program has achieved major milestones in developing and deploying modernized GPS capabilities.

Col. Bernard Gruber, GPS program director at the Space and Missile Systems Center, Los Angeles Air Force Base, led his team through a Defense Acquisition Board (DAB) review chaired by Frank Kendall, deputy undersecretary of defense for acquisition, technology and logistics, and attended by other senior Department of Defense (DoD) officials.

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By Inside GNSS
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GMV Will Launch Fully Hosted Software GPS Receiver at Mobile World Congress
December 22, 2010

GMV Will Launch Fully Hosted Software GPS Receiver at Mobile World Congress

GMV will launch the SRX-10, a software GPS receiver for mass-market applications, at this year’s GSMA Mobile World Congress, scheduled February 14–17 in Barcelona, Spain.

As a fully hosted solution, all SRX-10 receiver functions — even signal acquisition and tracking — can be hosted on a general purpose CPU with only the requirement of adding on a low cost RF front-end, according to the company.
The company cites other benefits offered by its new software receiver, particularly its substantial flexibility and upgradeability.

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By Inside GNSS
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Air Force Approves 3 GPS Technical Specs
August 19, 2010

Air Force Approves 3 GPS Technical Specs

The GPS Wing has authorized publication of three technical documents with updated specifications for the U.S. Global Positioning System, including the next-generation GPS Block IIIA satellites now in development, the L5 radio link, and the new L1 civil signal  (L1C) that will be available with the GPS III spacecraft.

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By Inside GNSS
Aldacom Offers GPS/Linux PC/GPRS Breadboard
August 10, 2010

Aldacom Offers GPS/Linux PC/GPRS Breadboard

Aldacom GmbH, of Neu-Isenburg, Germany, recently announced the debut of the AldaLogic C10/3, a breadboard containing an embedded Linux PC on a surface measuring 104 x 63 millimeters.

The unit also contains a Quad-band GPRS module and SiRF3 GPS module, as well as interfaces for USB, RS232 and Ethernet components. An SD-card reader enables expansion of the standard 4 Mb of flash memory.

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By Inside GNSS
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