TAG: LightSquared

Letters to the Editor: LightSquared Satellite Case Skimpy

July 1, 2011By

Thank you for the story “LightSquared, FCC Rebuttals Distort Record” (see www.gpsworld.com/distort). One thing worth clarifying: you state, “It appears that the purpose of Lightsquared’s satellite service is, now, to provide ancillary service in remote areas not covered by the ubiquitous primary terrestrial network, or in the event that the terrestrial network is destroyed — exactly the opposite of what the FCC authorized and the GPS industry had understood and agreed to.” read more

This article is tagged with , and posted in From the Editor, Opinions

Expert Advice: Critical Offshore Applications of SBAS GNSS

July 1, 2011By

Precise positioning of many different kinds of vessels and other equipment depend upon satellite-based augmentation systems (SBAS) of GNSS, principally GPS and GLONASS at this time. The applications range from exploration to production and delivery of hydrocarbons to shore-based installations and navigation of very large crude carriers, or oil tankers. Decisions and recommendations are strongly needed to keep these services free from interference. read more

This article is tagged with and posted in Expert Advice & Leadership Talks, GNSS, GNSS Opinions, Opinions

Expert Advice: Energy Production Concerns about LightSquared

July 1, 2011By

Dear Chairman Genachowski: The National Ocean Industries Association (NOIA), which represents approximately 270 member companies involved in outer continental shelf (OCS) energy production throughout the United States, is gravely concerned over the pending allocation of Mobile Satellite Services (MSS) spectrum to LightSquared, Inc. for terrestrial high-powered transmissions. LightSquared’s proposed transmission structure will adversely impact GPS and Inmarsat signals along our coastlines, both of which are critical to marine operations. read more

This article is tagged with and posted in Expert Advice & Leadership Talks, GNSS, GNSS Opinions, Opinions

LightSquared, FCC Rebuttals Distort Record

June 14, 2011By

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

This article is tagged with and posted in GNSS, GNSS Opinions, Newsletter Editorials, Opinions

The System: Third Report by LightSquared/GPS Technical Working Group

June 1, 2011By

Plus: Locata as Alternative PNT, Indian SBAS, Galileo Launch Slow but steady progress of the Working Group (WG) convened by the Federal Communications Commission (FCC) to study the GPS overload/desensitization issue is related in the group’s Third [monthly] Pogress Report, filed with the FCC on May 16. For the third consecutive time, the report contains little in terms of actual... read more

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

Out in Front: Blinded by the Light

May 1, 2011By

To illustrate the fix we’re in, Logan Scott offered this analogy for out-of-band interference during the April webinar, “LightSquared and GPS: Our Story So Far.” We’re driving at night and come upon a bicylist with one of those little flashing lights. That’s the GPS signal. So far, so safe. We know the bicyclist’s position. Then around the bend comes a truck with its headlights on high-beam, in the adjacent lane, but brights set at our eye level. That’s the LightSquared signal. Where’s the bicyclist? Uh oh. read more

This article is tagged with and posted in From the Editor

The System: Second Report by LightSquared/GPS Technical Working Group Maps Terrain, Does Not Yet Explore

May 1, 2011By

Plus: GLONASS CDMA Tracked, Third Beidou-2 Launched The second report from non‐governmental members of the LightSquared/GPS Technical Working Group (TWG) was filed with the Federal Communications Commission (FCC) on April 15. For those anxious to see actual results of interference/desensitization of GPS receivers by the proposed LightSquared terrestrial signal — or, conversely, absence of said results — the report does not contain... read more

This article is tagged with , and posted in GNSS, The System

The System: First GPS Intereference Report Sent to FCC

April 1, 2011By

First Overload Interference/Desensitization to GPS Receivers, Systems, and Networks Report to FCC; Plus Save Our GPS Coalition Forms; WAAS Official Again; EGNOS SOL Operational; Russian SBAS Satellite Passes Transponder Tests read more

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