Subject: 	Discontinuing codeless/semi-codeless P(Y) signal
Date: 	Fri, 06 Jun 2008 11:06:30 -0700
From: 	Dallas Vienneau <dallas.vienneau@canam.com>
To: 	Jason.Kim@noaa.gov



Hi,

 

I think it’s great that GPS is moving forward via modernization system 
and look forward to using the new L2C and L5 signals but would like to 
offer my two cents. 12 years does seem like a lot of time to make the 
transition and upgrade to receivers capable of receiving these two new 
signals but in reality I feel like the GPS civil community worldwide 
(more specific, I’m concerned about the surveying industry) will still 
be pressed for time. If the whole modernization system is fully 
operational in 2018 as planned (nothing goes wrong), it leaves the civil 
community with 2 years to fully test the receivers for software or 
hardware glitches or bugs (I realized they can test some of it in the 10 
years leading up to 2018, but to fully tested it would be best done once 
the GPS modernization system is fully operational in my opinion), test 
and be comfortable with the new accuracies, update survey manual of 
standards of practice or General Survey Instruction Rules to correspond 
with the new accuracies of GPS Modernization.

 

Will all that being said and in my opinion I think the date should be 
pushed back a little further to Dec 31, 2023 allowing the GPS community 
five years instead of two years to get comfortable with the GPS 
Modernization signals once all the planned satellites, that are needed 
to make the system fully operational are in orbit.

 

 

Thanks

 

______________________________

Dallas Vienneau

GPS Analyst- Fort St. John

Can-Am Geomatics BC

200, 9900 100 Ave, Fort St. John, BC, V1J 5S7

Ph. (250) 787-7171 Ext. 106 , Fax (250) 787-2323