Application of the Helicopter Antenna Radiation Prediction Code (HARP) to modeling fixed wing aircraft

The application of HARP to the prediction of the radiation patterns of antennas on complex, fixed wing airplanes (Boeing 727, 737, 747, etc.) at high frequency is explored. The antennas are part of an angle of arrival (AOA) system, commonly known as the Traffic-alert Collision Avoidance System (TCAS). The objectives of the study are to estimate the most suitable location for the antennas on the fuselage, based on the AOA prediction accuracy of the TCAS, and to study the performance degradation due to the presence of another antenna in the vicinity of the TCAS antenna.<
>