GNSS

DoT Disses DoD’s GPS Chops

January 9, 2014By

The departing Deputy Secretary of Transportation, John Porcari, wrote a letter in the closing days of 2013 opposing the U.S. Air Force’s announced plans to begin broadcasting Civil Navigation (CNAV) message-populated L2C and L5 signals as early as April 2014. Military personnel are incensed over what they see as Porcari’s impugning, when not ignoring, the Air Force 35-year track record... read more

Quad-Constellation Receiver: GPS, GLONASS, Galileo, BeiDou

January 8, 2014By

The implementation changes and first live tests of BeiDou and Galileo on Teseo-3 GNSS chips developed in 2013 are covered, bringing it to a four-constellation machine. By 2020, we expect to have four global constellations all on the same band, giving us more than 100 satellites — under clear sky, as many as 30 or 40 simultaneously. read more

ION GNSS+ 2014 Conference Now Accepting Abstract Submissions

January 6, 2014By

Abstract submissions are now being accepted for the Institute of Navigation’s (ION) GNSS+ 2014, the 27th International Technical Meeting of the Satellite Division. The conference will take place September 8-12, 2014 (Tutorials September 8-9) at the Tampa Convention Center, Tampa, Florida. The deadline for submitting abstracts is March 7, 2014. Instructions on submitting your abstract can be found on the... read more

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

China Releases Public Service Performance Standard for BeiDou

January 5, 2014By

On December 27, 2013, the first anniversary of BeiDou Navigation Satellite System providing full operational regional service was held in Beijing. At the meeting, China Satellite Navigation System Management Office Director Ran Chengqi announced the BeiDou Navigation Satellite System Public Service Performance Standard. The document details the public service performance parameters of BeiDou system, including service area, accuracy, integrity, continuity,... read more

This article is tagged with and posted in BeiDou/Compass, GNSS News, Latest News

Innovation: Cycle Slips

January 1, 2014By
FIGURE 1. A cycle slip affecting phase measurements but not the pseudoranges.

Detection and Correction Using Inertial Aiding
A team of university researchers has developed a technique combining GPS receivers with an inexpensive inertial measuring unit to detect and repair cycle slips with the potential to operate in real time. read more

The System: Two More Threes for Space

January 1, 2014By

A December 12 contract modification provided Air Force funding to Lockheed Martin to complete the fifth and sixth GPS III space vehicles (SV 05-06). Lockheeed originally received funding to procure long-lead parts for satellites five through eight (SV 05-08) in February 2013. read more

Data Sources for BeiDou, Real-Time Ephemeris

January 1, 2014By

From the GNSS R&D Discussion Group on LinkedIn Hello, everyone, I am looking for a tool/software which can generate a satellite geometry distribution map of Chinese BeiDou over Asia. Just like a GPS PDOP global map. Could anyone give me a help? Thanks a lot in advance. Comments Maybe this tool helps you: AVIGA Service Volume Simulator: www.navpos.de/Publications/AVIGA_Pro_Flyer.pdf We use... read more

This article is tagged with and posted in BeiDou/Compass, GNSS News

Raytheon Granted $8.5M Change Order for OCX M-Code Implementation

December 30, 2013By

Raytheon Intelligence and Information Systems has been awarded a change order for work that costs up to $8.5 million on its existing contract to ensure that the new military signal, M-code, works with the GPS Operational Control System, according to an announcement from the Pentagon as reported by Space News. Raytheon is building the ground station (OCX) for a new... read more

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