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首页> 外文期刊>IEEE Transactions on Aerospace and Electronic Systems >Low latency digital beamforming radar using aperture coding
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Low latency digital beamforming radar using aperture coding

机译：使用孔径编码的低延迟数字波束成形雷达

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摘要

A binary phase shift keying, space time coding approach to digital beamforming radar is considered for low latency estimation of range, velocity, and bearing angles of scatterers. Scattering information from all angles within the field of view is gathered during a single range/velocity acquisition and subsequent processing produces a range/velocity matrix for each beam direction. This coded aperture radar (CAR) approach provides range, velocity, and bearing angle estimates with low latency and requires only a single transceiver. These advantages are accompanied by a decrease in SNR as compared to conventional phased array and digital beamforming radars due to the fact that CAR receives less total energy. Furthermore, obtaining a sufficient number of measurements within an acquisition period to provide unambiguous estimation for a large number of bins may be impractical. Utilizing a reduced measurement set gives rise to "residual ambiguity," whose level is shown to be proportional to total received energy.
机译：为散射体的距离，速度和方位角的低等待时间估计，考虑了一种针对数字波束成形雷达的二进制相移键控，时空编码方法。在单个距离/速度采集过程中收集了视野内所有角度的散射信息，随后的处理为每个光束方向生成了一个距离/速度矩阵。这种编码孔径雷达（CAR）方法以低延迟提供了距离，速度和方位角估计，并且只需要一个收发器。由于CAR接收的总能量较少，与传统的相控阵雷达和数字波束成形雷达相比，这些优点伴随着SNR的降低。此外，在采集周期内获得足够数量的测量结果以为大量仓提供明确的估计可能是不切实际的。使用减少的测量集会引起“残留歧义”，其水平显示为与总接收能量成比例。

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