GPS + Pulsars + an apology/rebuttal

Question:
Can we duplicate or fake a pulsar? If so, could 
we mess up people's navigation? Could we 
interfere with signals from a pulsar? Or cancel 
them via some form of interference? 

Question:
When establishing our own space beacons (SPS 
- GPS in space), would we use some sort of 
pulsar like signal, but with more uniqueness?

Apology/Rebuttal:

Bob, 

Normally I don't respond to allegations*[1] of 
veiled US bashing, but in this case I must make 
an exception. I am aware the US owns, built, 
and (AFAIK) entirely paid for the GPS satellite 
constellation. I am aware of the limits of the 
accuracy and several techniques of getting 
around (or attempting to) the inaccuracies that 
can be introduced into the data feed. Anyone 
who uses this system other than the Americans 
(and maybe a Redcoat or two) are in the 
'buyer beware' (and given you paid nothing, 
that's a capital B in beware!). 

You did not, in fairness, mention that the US can 
also (you did build, and did pay for, and do 
own - AFAIK - the constellation) turn off the 
feeds from some satellites entirely or probably 
even deactivate the whole shebang if it really 
wants to black out an area. 

None of this is a statement of anything other 
than the facts as I know them. I don't believe 
there was any conclusion suggested herein.

FWIW, the 'veiled US bashing' was extremely 
veiled, as I, the author of the comment, totally 
failed to perceive it. I am not the type to take 
veiled shots at anyone.... it is not in my nature. 
I'll come out and say what I think in plain 
language. I understand the desire to defend 
ones country, although I'm a little offended that 
you'd think I'd stoop to petty sniping at the 
US.*[2]

However, perhaps it is the quintessential 
Canadian lurking inside, but I will apologize for 
causing any unintended harm and for phrasing 
my factual comments in such a way as they 
might seem to be US bashing if one was 
apparently more sensitive than I was to that 
possibility. My apologies. 

And my thanks to Brian for succinctly defending 
me. <tips hat>

And let me conclude by saying that I'm very  
glad to be on the same continent as the USA 
(as opposed to any number of other options), I 
expect to enjoy beating and being beaten by 
Americans at ECC next weekend, also that I'm 
very glad to have so many good American 
friends (Bob among them), and I'm very proud 
to be Canadian! These things are in no way 
mutually exclusive!

Tomb

[1] Alleged because there was neither intention, 
nor I believe with a dispassionate review, 
evidence to support such an allegation wthout a 
fair degree of speculation as to some (non-
existent) context or agenda behind the 
comments rather than from the meat of the 
comments themselves. 

[2] Now, US Bashing was what went on when I 
sent Jon Davis a jibe about our Women's 
Hockey Team winning.... but that did include a 
number of smileys! All in good fun and merely a 
preamble to me beating Jon at Formula De in 
Lancaster! *as Tomb utters famous last words*
And US Bashing as it pertains to Hockey is NOT 
petty sniping at the US. It's HOCKEY we're 
talking about.....!!!!! ;) 
---------------------------------------------
Thomas Barclay
Co-Creator of http://www.stargrunt.ca 
Stargrunt II and Dirtside II game site

Corruptisima republica plurimae leges. 
[The more corrupt a republic, the more laws.]
-- Tacitus