非均勻間隔OFD-LFM的MIMO雷達波形設計

李慧; 趙永波; 馮大政; 程增飛

doi:10.11999/JEIT150814

非均勻間隔OFD-LFM的MIMO雷達波形設計

doi: 10.11999/JEIT150814

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- 文章訪問數(shù): 1508
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出版歷程
- 收稿日期: 2015-07-08
- 修回日期: 2015-12-31
- 刊出日期: 2016-04-19

MIMO Radar Waveform Design for OFD-LFM with Various Frequency Steps

摘要

摘要: 正交頻分線性調(diào)頻(OFD-LFM)信號是多輸入多輸出(MIMO)雷達的一種常用發(fā)射波形，在分析其空時特性的基礎上，針對空域合成信號自相關旁瓣存在的問題，該文提出一種非均勻間隔的OFD-LFM波形，并給出了相應的波形設計方法。該方法建立空時聯(lián)合優(yōu)化的模型，采用序列二次規(guī)劃求解得到各信號的頻率間隔和初相。所設計波形的發(fā)射方向圖近似全向，空域合成信號具有良好的相關性能。
- MIMO雷達 /
- 波形設計 /
- 正交頻分線性調(diào)頻 /
- 序列二次規(guī)劃
Abstract: Orthogonal Frequency Division-Linear Frequency Modulation (OFD-LFM) signal is widely used in Multiple Input Multiple Output (MIMO) radar systems. For solving the problems of the auto-correlation sidelobes of the spatial synthesized signals, an analysis is made of the inherent sidelobe property. Furthermore, OFD-LFM with various frequency steps is proposed and the waveform design method is given. The optimization model is established based on the temporal property and spatial property jointly. Then, the frequency steps and initial phases are optimized by Sequential Quadratic Programming (SQP). The transmitted power of the designed waveform is approximately equal in all directions, and the spatial synthesized signals have good correlation properties.
- MIMO radar /
- Waveform design /
- Orthogonal Frequency Division-Linear Frequency Modulation (OFD- LFM) /
- Sequential Quadratic Programming (SQP)

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