On-Site Geo-Referencing of 3D Static Terrestrial Laser Scans

June 29, 2011 - By

By Jens-André Paffenholz This blog presents an efficient procedure for directly geo-referencing static 3D laser scans. This is a worthwhile way to obtain the required transformation parameters from the local sensor-defined coordinate system to a global system. Therefore, a multi-sensor systems (MSS) is designed with a phase-measuring laser scanner and 3D positional sensors (see Figure 1). By means of at least... read more

This article is tagged with , , and posted in Survey

LightSquared Goes Global; GLONASS, Galileo May Be at Risk, Too

June 28, 2011 - By

Recent events, some of them summarized here, may appear to have dealt setbacks to LightSquared, the boundless opportunist of wireless broadband that just happens to interfere with GPS. But the company has not run out of moves yet. Would you, if you had $20 billion at stake? The latest gambit, led by lawyers and cloaked in jargon, appears to be an end-run around the U.S. government to appeal to the International Telecommunications Union, which has ultimate and international authority over spectrum. Watch out, GLONASS and Galileo — and U.S. troops operating in foreign theaters. read more

This article is tagged with , , and posted in Mobile

European Commission Awards Final Contracts Making Galileo a Reality

June 23, 2011 - By

The European Commission announced that the final two contracts, out of six, for Galileo, Europe’s global navigation satellite programme will be signed at 16.00 by the European Space Agency on behalf of the European Commission at the prestigious Le Bourget Aerospace Fair in Paris. Signature of these contracts is essential for the deployment and provision of three initial services by Galileo in 2014. read more

This article is tagged with , and posted in GNSS

Galileo’s Soyuz Launchers Arrive at French Guiana

June 22, 2011 - By

The European Space Agency (ESA) announced that two Soyuz launchers which will fly the first four satellites of Europe’s Galileo navigation system into orbit have arrived at Kourou harbour in French Guiana. read more

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LightSquared: High-Precision Receivers Are Collateral Damage

June 21, 2011 - By

Originally, the LightSquared/GPS Technical Working Group’s (TWG) report was due to the FCC on June 15. LightSquared requested from the FCC, and received, a two-week extension to submit their report. Three days later, LightSquared announced they found a solution to the GPS interference problem. Their proposed solution is not good news for the high-precision GPS user community. read more

This article is tagged with , and posted in Opinions, Survey

LightSquared Prospects; FCC Chair Wants Interference Cleared, Hits Back at GPS

June 14, 2011 - By

Concerns by government and the private sector about GPS interference from LightSquared’s proposed wholesale LTE service accelerates. Government experts just reported that interference with GPS occurred in high portions of LightSquared's spectrum bands and little in the lower spectrum. The National Space-Based PNT Advisory Board’s tests showed that some GPS receivers lost signal strength while others were fully disabled by LightSquared's signal. FCC Chairman Genachowski, under fire for granting LightSquared a conditional waiver, has reiterated that he will not permit LightSquared to begin commercial service without first resolving concerns about potential interference to GPS devices. read more

This article is tagged with , , and posted in Mobile, Opinions

LightSquared, FCC Rebuttals Distort Record

June 14, 2011 - By

A claim frequently made by LightSquared spokesperson Jeff Carlisle, and recently by FCC chairman Julius Genachowski, that the GPS industry knew long ago about LightSquared’s plan for powerful terrestrial transmitters, would be a telling point — if it were true. But it is not. The verifiable fact is that the GPS industry knew about and agreed to a plan by a previous version of the company, for a different purpose, with a different business concept, and employing a completely different technological approach, one that would not have harmed GPS transmissions and disabled GPS users the way the current plan does. Calling the 2010 LightSquared plan the same as the 2003 Motient plan is running a wolf in sheep’s clothing. read more