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arXiv 2106.11490cs.ITeess.SPmath.IT
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基于压缩照明的高分辨率雷达探测

High Resolution Radar Sensing with Compressive Illumination

Nithin Sugavanam, Siddharth Baskar, Emre Ertin

摘要:

我们提出了一种压缩雷达的设计,结合了多音线性调频(LFM)的波形在发射机与一个经典的拉伸处理器和子奈奎斯特采样在接收机。所提出的压缩照明方案具有更少的随机元素,从而与先前提出的基于随机波形的压缩雷达设计相比,减少了存储和实现的复杂性。我们分析了这种照射方案的任务的联合距离到达角估计的多输入多输出(MIMO)雷达系统。我们提出的恢复保证所提出的照明技术。我们表明,对于足够大数量的调制音调,该系统实现了高分辨率的范围,并成功地恢复了稀疏场景中的目标的范围和到达角。此外,我们提出了一种算法,估计目标的距离,到达角,和散射系数的连续。最后,我们提出了仿真结果来说明作为系统参数的函数的恢复性能。

英文摘要:

We present a compressive radar design that combines multitone linear frequency modulated (LFM) waveforms in the transmitter with a classical stretch processor and sub-Nyquist sampling in the receiver. The proposed compressive illumination scheme has fewer random elements resulting in reduced storage and complexity for implementation than previously proposed compressive radar designs based on stochastic waveforms. We analyze this illumination scheme for the task of a joint range-angle of arrival estimation in the multi-input and multi-output (MIMO) radar system. We present recovery guarantees for the proposed illumination technique. We show that for a sufficiently large number of modulating tones, the system achieves high-resolution in range and successfully recovers the range and angle-of-arrival of targets in a sparse scene. Furthermore, we present an algorithm that estimates the target range, angle of arrival, and scattering coefficient in the continuum. Finally, we present simulation results to illustrate the recovery performance as a function of system parameters.

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