09.21.2011 01:15 PM
LightSquared Announces GPS Filter Fix
RESTON, VA.: LightSquared says it has a filter. The company today
announced a deal to develop a filter system it says will eliminate interference
to high-precision global positioning systems from its proposed hybrid satellite-terrestrial
broadband network. LightSquared said it cut a deal with Javad GNSS Inc. of San Jose,
Calif., to create the fix.
LightSquared said “the Javad GNSS system can be adapted to work with high-precision
GPS devices, including those already in the agriculture, surveying, construction
and defense industries. Javad GNSS has completed the design, made prototypes and tested those prototypes.
Pre-production units will be released for public tests in October, followed by mass
production. High-precision receivers for positioning applications are expected to
go to market by November 2011 and precision timing devices by March 2012.”
LightSquared’s proposed network has met with vociferous opposition from GPS users,
who range from people driving cars to those driving a military weapons systems.
The terrestrial portion of LightSquared’s network was found to interfere with nearly all GPS
operations in trials held early this year. The company then proposed a modified
operational plan it said left only high-precision instruments at risk of interference.
Unfortunately for LightSquared, those high-precision instruments are entrenched
in so many military systems that a four star general recently testified that it
would cost billions and possibly take 10 years or more to affect a fix.
LightSquared is nonetheless pressing ahead as planned. The company turned to Dr.
Javad Ashajaee, an electrical engineer involved in developing global positioning systems since
the early 1980s. Here’s Sanjiv Ahuja, chairman and CEO of LightSquared:
“I have said from the beginning that this interference issue will be resolved as
soon as smart engineers like Javad Ashjaee put their minds to it. With this new
system, Mr. Ashjaee makes another mark for himself as a cutting edge pioneer in
the precision GPS industry, a field he has helped shape for more than 30 years.”
Ahuja was in the news last week defending his company’s honor against allegations
that it was buying White House influence. The charge arose from emails obtained
in which LightSquared executives were seeking a meeting with Administration officials.
It was reported that Ahuja made a $30,400 contribution to the Democratic party while
the appeal was being made.
In the aftermath, Ahuja said it was “ludicrous to suggest LightSquared’s success
depends on political connections.” He and LightSquared’s founder, Phil Falcone,
have given to both parties, he said.
“It’s difficult to charge that LightSquared 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 on Sept. 15, the day Gen.
William Shelton testified
before that committee that it would take 10 years and billions to fix LightSquared’s
interference. Reports later emerged that Shelton and other witnesses were “pressured”
to change their testimony to reflect more favorably on LightSquared. Rep. Darrell
Issa (R-Calif.), chairman of the House Oversight and Government Reform Committee
said yesterday on C-Span that the committee would investigate the allegations.
Despite the general’s skepticism, LightSquared said its fix was “a very simple and
inexpensive process,” developed in a matter of days. Javad was said simply to have
reconfigured the filters and linear amplifiers in existing GPS devices “to make
them completely compatible with LightSquared’s bottom 10 MHz of spectrum,” where
it intends to commence operations.
“This interference problem is not a difficult one to solve, once you decide to solve
it. We’ve begun manufacturing pre-production models and expect to have 25 available
within two weeks--we are not talking in hypotheticals here,” Ashjaee said.
“The truth is that high precision GPS users have a wide range of interference issues
to contend with--from congested frequencies to intentional jamming. LightSquared
made this problem much easier to solve by moving to spectrum farther away from the
core GPS frequencies. As LightSquared’s spectrum neighbor, it’s our obligation to
build a wall between our spectrum and LightSquared’s. My filter accomplishes that
goal,” he said.
Ashjaee said the tests conducted thus far didn’t consider “GPS modernization plan
that is in place. Since we have demonstrated that LightSquared can certainly coexist
with the current GPS satellite signals, the coexistence will be even stronger when
the new GPS satellites with modern L1C, L2C and L5 unencrypted codes are launched.”
LightSquared’s proposed network would provide 4G LTE wireless broadband service
across the country, primarily on terrestrial transmitters, with satellites filling
in the gaps. The network is intended to be a wholesale-only play, to be offered
to consumers by LightSquared’s partners, which now exceed a dozen. The network must
pass muster with the Federal Communications Commission, however, and that agency
last week said it would not approve LightSquared without more testing. The commission
said it would not allow LightSquared to launch until it finds that “GPS interference
concerns have been satisfactorily resolved.”
~ Deborah D. McAdams