This is a standard tool available in the free version of Google Earth.
LabSat SatGen Software allows you to create a data file which can be replayed on a LabSat which is based on a user-generated trajectory file.
For example, say you are based in the UK, but you have customers for your products in Australia If your GPS equipment is used under very high dynamic conditions, you can create a scenario to check what happens to your product under these conditions. You could simulate an aircraft taking off and going into a vertical climb up to 30,000 feet, and then performing a high-g turn at this altitude, all without leaving your bench!