Ieee Transactions on Aerospace and Electronic Systems 1 Quasi-orthogonal Wideband Radar Waveforms Based on Chaotic Systems *
Ieee Transactions on Aerospace and Electronic Systems 1 Quasi-orthogonal Wideband Radar Waveforms Based on Chaotic Systems *
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通讯作者：
Matthew S. Willsey;K. Cuomo;A. Oppenheim
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作者：
Matthew S. Willsey;K. Cuomo;A. Oppenheim
许多雷达应用，例如涉及多输入多输出（MIMO）雷达的应用，需要正交或接近正交的波形集。如本文所示，利用混沌系统可以生成一组具有高基数的近正交波形，该波形集的性能与脉冲压缩雷达系统中使用的其他波形集相当。具体来说，来自混沌系统的近正交波形显示出许多理想的雷达特性，包括紧凑的频谱，低距离旁瓣，平均发射功率在峰值功率的几dB以内。此外，这些波形基本上可以在任何实际时间长度和带宽下生成。由于这些波形是由确定性过程产生的，因此每个波形都可以用少量系统参数表示。此外，假设这些波形具有大的时间带宽积，在给定的时间和带宽下存在大量的近正交混沌波形。因此，所提出的生成过程可以潜在地用于在每个脉冲上生成新的发射波形。
Many radar applications, such as those involving multiple-input, multiple-output (MIMO) radar, require sets of waveforms that are orthogonal, or nearly orthogonal. As shown in this paper, a set of nearly orthogonal waveforms with a high cardinality can be generated using chaotic systems, and this set performs comparably to other waveform sets used in pulse compression radar systems. Specifically, the nearly orthogonal waveforms from chaotic systems are shown to possess many desirable radar properties including a compact spectrum, low range sidelobes, and an average transmit power within a few dB of peak power. Moreover, these waveforms can be generated at essentially any practical time length and bandwidth. Since these waveforms are generated from a deterministic process, each waveform can be represented with a small number of system parameters. Additionally, assuming these waveforms possess a large time-bandwidth product, a high number of nearly-orthogonal chaotic waveforms exist for a given time and bandwidth. Thus, the proposed generation procedure can potentially be used to generate a new transmit waveform on each pulse.