초록 ▼

A system for calculating the bearing of a signal source, with a directional antenna, provides corrections for distortion, such as due to a small fuselage of the monitoring aircraft and the elevation angle of an intruder aircraft with respect to the monitoring aircraft. A correction is applied to the

A system for calculating the bearing of a signal source, with a directional antenna, provides corrections for distortion, such as due to a small fuselage of the monitoring aircraft and the elevation angle of an intruder aircraft with respect to the monitoring aircraft. A correction is applied to the bearing estimate that is based on relevant factors, such as the fuselage size and the elevation angle of the intruder aircraft. The correction can be calculated or applied through the use of a look-up table, which may be either pre-selected or selected after calculation of the elevation angle of the intruder aircraft.

대표청구항 ▼

[ What is claimed is:] [45.]45. A computer for use in aircraft, the computer comprising:a. at least one input for accepting antenna signals; andb. a memory comprising idicia of:(1) a linear function having a slope; and(2) instruction for determining a bearing, the instructions comprising:determining

[ What is claimed is:] [45.]45. A computer for use in aircraft, the computer comprising:a. at least one input for accepting antenna signals; andb. a memory comprising idicia of:(1) a linear function having a slope; and(2) instruction for determining a bearing, the instructions comprising:determining an amplitude difference between a selected pair of the antenna signals;determining a slope in accordance with indicia of a selected antenna signal of the pair of antenna signals; anddetermining a bearing in accordance with the linear function, the amplitude difference, and the slope.