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Frequency Diverse Array Beamforming Using Nonuniform Logarithmic Frequency Increments
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DOI：10.1109/LAWP.2018.2867085.png)
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Abstract
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Unlike a conventional phased array that offers directivity only in the angle domain, a frequency diverse array (FDA) is capable of producing a beampattern that is dependent on both angle and range. In this letter, a transmit beamforming method for an FDA is proposed that uses logarithmic frequency increments that have a nonuniform spacing. Compared to existing methods, the proposed architecture offers an improved range-angle localization with reduced sidelobe values. Simulations results for single and multiple target beampatterns are shown in order to assess the efficacy of the proposed architecture.
Keywords:
Frequency diverse array (FDA)
range-angle beampattern synthesis
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