Editing Simulation (section)

===Satellite navigation===
{{Unreferenced section|date=September 2021}}
The only true way to test [[GNSS]] receivers (commonly known as Sat-Nav's in the commercial world) is by using an RF Constellation Simulator. A receiver that may, for example, be used on an aircraft, can be tested under dynamic conditions without the need to take it on a real flight. The test conditions can be repeated exactly, and there is full control over all the test parameters. this is not possible in the 'real-world' using the actual signals. For testing receivers that will use the new [[Galileo (satellite navigation)]] there is no alternative, as the real signals do not yet exist.