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LightSquared Says It Has Cheap and Easy GPS Fix

Article Comments  5  

Sep 21, 2011, 9:54 AM   by Eric M. Zeman   @phonescooper

LightSquared today announced that it has figured out an inexpensive way to solve the GPS interference issues created by its L-band Long Term Evolution 4G mobile broadband network. LightSquared said it signed an agreement with a company called Javad GNSS, which "can be adapted to work with high-precision GPS devices including those already in the agriculture, surveying, construction and defense industries." Javad GNSS has taken its equipment and refreshed the filter and amplifier settings so that they are compatible with the 10MHz swath of spectrum LightSquared plans to use to operate its LTE 4G network. LightSquared says the fix is so simple and inexpensive that it will not increase the price of consumer equipment. The Javad GNSS equipment is expected to be ready for testing late this year, with deployments expected in the first half of 2012. LightSquared has been battling the Federal Communications Commission and the GPS industry for the better part of a year over its planned network, which many believe interferes with GPS signals. The FCC has told LightSquared that more testing is required before a final verdict can be rendered.

more info at LightSquared »

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CellStudent

Sep 21, 2011, 1:09 PM

I found a picture for the non-techy out there

This illustrates the GPS industry's failure as well as anything I've ever seen:

http://www.javad.com/jgnss/javad/news/pr20110921.html »

Look at the graphic halfway down the page. The orange 'McDonald's" symbol on the left is where LightSquared wants to broadcast. They have compromised to only using the left lobe labelled "10L" for now.

The Yellow is a higher-grade GPS reciever, and the Blue is a modern-day consumer GPS reciever (Cell phone, Garmin, TomTom, etc.)

The Black is the new (not-stupid) JAVAD GPS filter design.

The Yellow and the Blue are only "supposed" to work between 1559 and 1591 MHz (labeled at the top of the graphic) but they built such crappy hardware that they're failing to stop accepting input from the "10...
(continues)
Pretty picture.

But I noticed its from Lightsquared (hardly a reliable source in this issue)!!

The facts are that GPS exists and is in use TODAY. Bandwidth overlap and leakage are KNOWN variables and should not have come as a surprise to Lights...
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...
chapelhill

Sep 21, 2011, 11:59 AM

what about the rest of us GPS users?

It's not clear to me in this story, what this means to ME...

What about my GPS? Is this technology going to be applied to LightSquared's equipment so that it will not interfere with ANY other GPS equipment, or is it going to be provided or installed on major GPS equipment/groups/entities in order to overcome the interference from LightSquared?

Anyone have any clarification?
chapelhill said:
It's not clear to me in this story, what this means to ME...

What about my GPS? Is this technology going to be applied to LightSquared's equipment so that it will not interfere with ANY other GPS equipment, or i
...
(continues)
 
 
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