The Measurement of Microwave Multipath in an Airport Environment.
OFFICE OF TELECOMMUNICATIONS BOULDER COLO INST FOR TELECOMMUNICATION SCIENCES
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Multipath in an operating airport, and its impact on the performance of a Microwave Landing System MLS is an important aspect of the development of these systems. Test programs on the candidate MLS systems developed in the U.S. were conducted in areas that do not emulate large commercial airports. In order to better evaluate multipath in a realistic environment, measurements of reflected signals at the MLS operating frequency were performed, and the results used to develop or modify a computer simulation program. Both a cw system and a pseudorandom noise PN channel probe were used in the measurement program. This report presents the results of multipath measurements made on 1 airport terminal buildings, 2 large maintenance hangars, and 3 aircraft on the surface of the airport. Results indicate that significant reflection levels are prevalent from these sources, and could produce a multipath reception problem at the receiver of an aircraft approaching the runway. Author
- Terminal Flight Facilities
- Air Navigation and Guidance