The Performances of the Antennas in Active/Passive Compounded Guidance Part I: Broad-Band Antennas and Passive Direction-Finding Schemes |
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Authors: | Hong Ma Lanfeng Qi Mingli Zhu |
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Affiliation: | (1) Department of Electronic and Information Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, People's Republic of China |
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Abstract: | Part one of a two-part paper analyses the performances of the ultra broad-band antennas which are the key components in the broadband passive guidance in details. Two kinds of passive direction-finding schemes which have wide fields of vision are raised and analyzed in this part. Because of the uncertainty of the phase-centers of the antennas, the usual amplitude sun-subtraction monopulse technique can not be used to find the direction of a radiative source in a wide frequency range. A beam-operation network which can be used to form two secant beams from single broad-band spiral antenna is able to applied in the amplitude-monopulse system. An algorithm to eliminate the angle-confusion in the amplitude-phase monopulse direction-finding system is also studied. |
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Keywords: | passive guidance ultra broad-band antenna monopulse direction-finding technique |
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