Final Answer:
One ILS receiver is combined with one GPS receiver to form a Integrated Navigation System.
Step-by-step explanation:
When one Instrument Landing System (ILS) receiver is combined with one Global Positioning System (GPS) receiver, it forms an Integrated Navigation System. An Integrated Navigation System combines inputs from multiple navigation sources to enhance overall accuracy, reliability, and functionality. In this case, the ILS provides precision approach guidance for landing, particularly in adverse weather conditions, while the GPS receiver contributes accurate positioning information.
This integration allows for a more comprehensive navigation solution, combining the strengths of both systems. The ILS ensures precise approach and landing guidance, while GPS provides continuous and accurate positioning information, making the Integrated Navigation System valuable for aviation and navigation purposes.