集中式多輸入多輸出雷達(dá)多功能波形優(yōu)化設(shè)計(jì)
doi: 10.11999/JEIT141079
基金項(xiàng)目:
國家自然科學(xué)基金(61371181)資助課題
Optimal Multi-function Waveform Design for MIMO Radar with Collocated Antennas
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摘要: 針對(duì)集中式多輸入多輸出(MIMO)雷達(dá)波形設(shè)計(jì)中多個(gè)設(shè)計(jì)目標(biāo)同時(shí)優(yōu)化的問題，基于交替投影的思想，該文提出一種以任意維迭代譜逼近算法(ADISAA)為基礎(chǔ)的波形設(shè)計(jì)框架，通過可調(diào)的權(quán)重來協(xié)調(diào)發(fā)射方向圖匹配、良好的相關(guān)特性和頻譜凹口等多種功能的波形設(shè)計(jì)目標(biāo)，最終實(shí)現(xiàn)恒模波形設(shè)計(jì)。仿真結(jié)果表明，相對(duì)于已有的算法，在發(fā)射方向圖匹配的基礎(chǔ)上，該算法改善了發(fā)射波形在指定區(qū)間的相關(guān)特性，同時(shí)通過頻譜凹口的設(shè)計(jì)避開了受到色噪聲和有源干擾污染的頻段，算法的計(jì)算復(fù)雜度更低。
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關(guān)鍵詞:
- 多輸入多輸出雷達(dá) /
- 波形設(shè)計(jì) /
- 發(fā)射方向圖匹配 /
- 相關(guān)特性
Abstract: This paper addresses the simultaneous optimization problem of the multi-objective waveform design for MIMO radar with collocated antennas. Inspired from the idea of alternating projection, a waveform design framework is presented based on the Arbitrary-Dimensional Iterative Spectral Approximation Algorithm (ADISAA). Multi-objective of waveform design such as transmit beampattern match, good correlation, spectrum notch can be controlled by the adjustable weights. Finally, the constant modulus signal is designed. Simulation results show: the proposed algorithm improves the correlation performance of waveform at a specified lag intervals after transmit beampattern matching, the spectrum notch is designed to avoid the spectrum band which is polluted by active jamming and color noise, and it has lower computational complexity.-
Key words:
- MIMO radar /
- Waveform design /
- Transmit beampattern match /
- Correlation performance
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