We want to test the resilience of GNSS timing receivers to spoofing, i.e. we want to introduce time errors of milli-/ microseconds. The idea is the following: One SDR should transmit the ‘genuine’ signal, the other one the signal which will be sent a millisecond later. We then ramp up its signal to make the receiver clock catch up (=run fast).
However, the starting time of the simulation (for replay attacks) can only be entered with a precsion of 1 second, whereas the location can be entered in Skydel with a very high precision.
Is there a possibility to circumvent this?
Help will be very much appreciated!