[time-nuts] GPS signal simulator

[Tom Van Baak]

> Tom
> 
> Thanks that should be very useful for software simulations.
> 
> The use I had in mind for the tool I described where for the next stage of testing. 
> It can be used to test at the REAL Hardware level, using a 'perfect' GPS signal with 
> no noise or with any type of desired controlled noise.
> For example it is hard and time consuming to see how many ps of error 
> your phase detector is adding or what the phase margin or noise gain is of the H/W PLL.
> Is the power supply good enough or is it causing errors, etc 
> When using real GPS data, the random noise will hide the advanced 
> type of information you may want to take.
> The other use of the Hardware simulator is for someone that wants to know how 
> accurate their GPSDO is but does not have access to a source accurate enough 
> to test their GPSDO.
> 
> WarrenS

Read a paper like this to appreciate the complexities involved:

http://tycho.usno.navy.mil/ptti/ptti2002/paper29.pdf

/tvb