提出了一种多输入多输出(MIMO)雷达通信一体化系统的低截获概率(LPI)波形设计方法,该系统的一体化波形能同时进行目标探测与通信。首先,最小化下行链路中的多用户干扰,以期望LPI截获因子阈值为约束条件,构建了低截获MIMO雷达通信一体化波形优化模型。其次,通过将优化问题归类为正交普鲁克问题(OPP),获得了LPI波形的最优闭式解。最后,理论分析和仿真结果都表明,所设计的LPI波形能同时实现雷达与通信功能;并在保证一定LPI性能的前提下有效提升了通信性能。

In this paper, a design of the low probability of intercept (LPI) waveform is investigated for the multi-input-multi-output (MIMO) radar-communication integrated system, where the transmitted waveform is utilized to communicate with multiple users and detect radar targets simultaneously. The primary objective of the proposed strategy is to minimize the multi-user interference in the downlink while guaranteeing the desired LPI requirement. Then, by classifying the optimization problem as the orthogonal Procrustes problem (OPP), the closed-form solution to LPI waveform has been obtained. Finally, both theoretical analysis and simulation results indicate that the proposed LPI waveform can achieve both radar and communication functions simultaneously. The outcomes also demonstrate that the designed waveform enhances its communication performance on the premise of guaranteeing a certain low interception performance.

TN957. 51

中国博士后科学基金资助项目(2022M721027);国家自然科学基金资助面上项目(61971109)