Abstract
The purpose of a radio direction finder (df) is to measure the direction of arrival of a radio signal. Traditionally the azimuth angle of arrival, i.e., the angle of arrival in the horizontal plane, has been considered sufficient to define the direction of arrival of the signal, but the elevation angle of arrival as measured in a vertical plane is important for some target location schemes and for other purposes, such as propagation research. In any event the elevation angle of arrival of the incoming wave will affect the performance of azimuth-only df systems, even if elevation output is not needed.
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© 1993 Van Nostrand Reinhold
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Franks, R.E. (1993). Direction-Finding Antennas. In: Lo, Y.T., Lee, S.W. (eds) Antenna Handbook. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2638-4_9
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DOI: https://doi.org/10.1007/978-1-4615-2638-4_9
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