The SMD certificate might not be on file with the court, but that doesn't mean that it doesn't exist or won't be served in response to discovery -- they still have time. I don't see the SMD's identification number in the materials you provided -- do you have that number?
You are free to try to argue that you were paying very close attention to the officer's vehicle and that it was impossible that the vehicle was stationary at the time your speed was measured. I doubt that the court will accept that argument, but I won't be the judge.
Trying an "I wasn't speeding" defense after tacitly admitting that you were speeding at the time you were ticketed is also something of a long shot.

