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Transmit Beamspace Design for Multi-Carrier Frequency Diverse Array Sensor
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DOI：10.1109/JSEN.2016.2573379.png)
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摘要
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Different from phased-array providing only angle-dependent beampattern, frequency diverse array (FDA) produces a range, time, and angle-dependent beampattern. Nevertheless, FDA beampattern is coupling in the range, time, and angle responses. This paper proposes a range-angle-dependent transmit beamspace design for a uniform linear array FDA using multi-carrier transmission signal, namely, all the elements simultaneously transmit the signal in a frequency stepped multi-carrier transmission way. In doing so, the transmit beampattern can be decoupled and flexibly controlled in range-angle dimension. Furthermore, to resolve the range and time coupling response in the transmit beampattern, we devised three convex optimization algorithms to synthesize range-angle-dependent transmit beampattern for the multi-carrier FDA sensor. All the proposed methods are verified by the numerical results.
Keyword:
Frequency diverse array (FDA)
transmit beamforming
beamspace design
multi-carrier frequency
range-angle
convex optimization
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4.5
论文数:
2.2W
被引数:
7.3W
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