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ADAPTIVE MCPC RADAR WAVEFORM DESIGN WITH IMPROVED WIDEBAND AMBIGUITY FUNCTION

机译:自适应MCPC雷达波形设计,具有改进的宽带歧义功能

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摘要

Multicarrier Phase-Coded (MCPC) signals have been recently introduced to radar systems as a kind of wideband signal. In this paper we study the wideband ambiguity function (WAF) of multicarrier phase-coded signals. Based on the fact that scattering characteristics of target varies with frequency, we propose an approach which adaptively changes the transmitted frequency weights to improve radar's WAF. The adaptive waveform also yields better auto-correlation function. Using optimization procedure, frequency weights are adaptively changed such that the volume of the corresponding WAF best approximates the volume of a desired ambiguity function. Simulation results show that proper selection of carrier number and symbol length can yield better properties of WAF.
机译:最近已经将多载波相位编码(MCPC)信号作为一种宽带信号引入雷达系统。在本文中,我们研究了多载波相位编码信号的宽带歧义功能(WAF)。基于目标的散射特性随着频率而变化而变化,我们提出了一种自适应地改变透射频率权重的方法来改善雷达的WAF。自适应波形还产生更好的自动相关函数。使用优化过程,频率权重自适应地改变,使得相应的WAF的音量最佳地近似于所需的模糊函数的体积。仿真结果表明,正确选择载波号和符号长度可以产生更好的WAF属性。

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