Patent ID: 7183970

Claim:
A test apparatus for testing a Joint Advanced Missile Instrumentation Time-Space-Position Information Unit (JTU) located on board an airborne weapons system comprising: an antenna for receiving RF (radio frequency) signals which include GPS data from a plurality of satellites orbiting the earth; an antenna splitter connected to said antenna to receive said RF signals from said antenna, said antenna splitter splitting said RF signals including said GPS data; a reference receiver connected to said antenna splitter to receive said RF signals including said GPS data from said antenna splitter, said reference receiver, in response to said RF signals including said GPS data, providing satellite ephemeris data which contains information as to said satellites which are in a field of view for said reference receiver including orbital information about said satellites, and satellite timing data which is used to compute location for each of said plurality of satellites; said JTU being connected to said antenna splitter to receive said RF signals including said GPS data from said antenna splitter, said JTU providing location data which is measured with respect to a current location for said JTU wherein said GPS data is used to test a GPS sensor within said JTU; and a test computer connected to said reference receiver to receive said satellite ephemeris data and said JTU to receive said location data, said test computer processing said satellite ephemeris data and said location data to provide an exact location for said JTU expressed as a latitude, a longitude and an altitude for said JTU.