LightSquared: What It Means To the GPS Surveying/Mapping Community

LightSquared: What It Means To the
GPS Surveying/Mapping Community

http://images.questex.com/GPSW/2011/MarketInsights/SC_062311/SC-GIS_062311_reg_promo.html

Date: Thursday, June 23, 2011
Time: 10:00 a.m. PDT / 1:00 p.m. EDT / 5:00 p.m. GMT
Speaker: Eric Gakstatter , Editor, GPS World 's Survey Scene Newsletter
and Geospatial Solutions
Platinum Sponsor: Hemisphere GPS
Duration: 60 minutes

See:
http://images.questex.com/GPSW/2011/MarketInsights/SC_062311/SC-GIS_062311_reg_promo.html

...

I'm sure that discussion will be interesting. I can guess what
Lightsquared will do to those users. There's sufficient information
already presented.

We know:

a) Precision GPS equipment requires the entire satellite radio
navigation bandwidth. That allows mitigation of multipath, assures
best post correlation error rate and captures the P code spectral
components for receivers that might use it

b) There isn't enough guard band to allow a 90 db roll-off to reject
the overpowering LTE signals. If such a filter can be designed there
will be issues with the spectral components time relationships due to
group delay distortions

The problem for survey/avionics GPS currently is not solvable --
physics

So when working near a Lightsquared tower, surveyors will need to
brush up on pre-year 2000 skills. FAA will decertify GPS avionics and
pilots/flight management systems will go back to exclusive use of
ground nav aids.

--- CHAS

wrote:


So Lightsquared wants civilian gps users to return to the Stone Age so
they can ca$h in.
1) Frequency nterference, intentional or otherwise, is ILLEGAL.
2) Few will gain, many will suffer.
3) The Pirate Ship Lightsquared needs to be sunk. I'm sure this can
be arranged.

Lg