24 - Space-Library

William Shelton, 空 軍 大 将 : GPS と`LightSquared は 共 存 できない
AF gen: GPS, LightSquared ‘can’t coexist’
diagram and said that even under LightSquared’s alternate
proposal for its network, which would move its signal farther
away from GPS, it would still squelch the harmonic frequencies
that precise receivers use. As for the “filters” LightSquared
Shelton
The boss of Air Force Space Command, Gen. William Shelton,
does not want to get any more mixed up in the political imbroglio
between the FCC, Republicans, Democrats and the broadband
startup LightSquared. His job, he told reporters Tuesday, is to
protect the Global Positioning System, and to that end, he
reaffirmed at the Air Force Association’s trade show that GPS
and LightSquared’s proposed network “cannot coexist.” Simple
as that. He said as much during a question and answer session
after a speech to the convention and then again to reporters in a
press briefing afterwards. In fact, Shelton even picked up a pen
and drew a diagram to illustrate how LightSquared’s network
effectively jams the signal that military GPS receivers need to
get their precise timing and location data. Shelton pointed to his
wants to develop to protect GPS receivers, Shelton repeated
that it could cost billions of dollars and take a decade to install
them on all of the military’s GPS units — if they work. That’s
not gonna happen. The only answer, he concluded, is “spectrum
reassignment” — the FCC would have to move LightSquared up
or down the spectrum. The problem there, of course, is that
other users are already occupying those parts of the band, but
that’s the FCC’s problem, not the military’s. So did the White
House pressure him to change the testimony he planned to give
about this to the House Armed Services Committee? “Any time,
in the past and in the future, that I’m called to testify I’ll do my
best to present the facts as I know them,” Shelton said. “The
real issue here, certainly, from my perspective, is protecting the
GPS service.”
http://www.dodbuzz.com/2011/09/20/af-gen-gps-lightsquared-cant-coexist/
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Fri, 16 September, 2011 www.spacenews.com/satellite_telecom/ Warren Ferster
LightSquared 社 の 会 長 兼 CEO の Sanjiv Ahuja は、 政 治 的 に 優 遇 されているとの 申 立 てをはねつける
LightSquared Chief Dismisses Allegations of Political Favoritism
PARIS — LightSquared Chairman and Chief Executive Sanjiv
Ahuja dismissed as “ludicrous” allegations that the company,
which plans to deploy a satellite-terrestrial mobile broadband
network serving North America, received favorable treatment
from U.S. telecommunications regulators because of its political
connections.
something so strongly … unless it’s from above or there’s a
relationship that’s not being disclosed,” Rep. Austin Scott
(R-Ga.) said. “The fact that we’re here is ridiculous.” Scott
asked FCC engineering chief Julius Knapp if such a relationship
existed, but Knapp did not acknowledge any political ties to
LightSquared. The witnesses at the hearing included Gen. William
Shelton, commander of U.S. Air Force Space Command, and
several other U.S. government officials. In a statement issued
Sept. 15 after the hearing, Ahuja noted that LightSquared was
not invited to testify. “It’s difficult to charge that LightSquared
Ahuja
Credit: Photo courtesy of Telenor
The allegations surfaced during a Sept. 15 House Armed
Services Committee hearing in which Republican lawmakers
suggested LightSquared’s political ties led the U.S. Federal
Communications System (FCC) to approve the company’s
system despite the interference threat it poses to GPS satellite
navigation signals. “ I have never seen an agency advocate
has undue political influence when it was denied the opportunity
to testify at today’s hearing of the House Armed Service
Committee’s Strategic Forces Subcommittee — or even be
allowed a one-on-one meeting with the chairman of that
committee prior to the hearing, as the GPS industry was given,”
Ahuja said. LightSquared and its plans to deploy a so-called
hybrid broadband network featuring satellites and some 40,000
ground-based repeaters came under fire in June after extensive
testing by a technical working group showed that the system
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