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首页> 外文期刊>SOLA: Scientific Online Letters on the Atmosphere >A Hybrid Multi-PRI Method to Dealias Doppler Velocities
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A Hybrid Multi-PRI Method to Dealias Doppler Velocities

机译：杂化多普勒速度的混合Multi-PRI方法

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References(10) Cited-By(4) Supplementary materials(1) A robust dealiasing method was developed and evaluated that can extend unambiguous Doppler velocity limits for a pulsed Doppler weather radar with multiple pulse repetition interval (PRI).The dealiasing method can correct a sparsely distributed velocity field with large random noise and/or large velocity gradients. The method includes areal multiple PRI dealiasing and dealiasing with spatial continuity. This method makes the simple assumption that Doppler velocities can be spatially approximated by linear polynomials of the coordinates in each small area.The dealiasing method was evaluated using simulated data that included uniform wind, Rankine vortices, axisymmetric divergence, and wind shifts. The simulated fields also included missing data and random noise. A test with real observations was also conducted. The results show that the method can successfully dealias most folded velocities. The processing time to dealias one PPI data in the evaluation is at most a few seconds using a 2.4-GHz CPU workstation, short enough for real-time radar observations.
机译：参考文献（10）被引用的文献（4）补充材料（1）开发并评估了一种鲁棒的去杂音方法，该方法可以扩展具有多个脉冲重复间隔（PRI）的脉冲多普勒天气雷达的明确多普勒速度极限。具有大随机噪声和/或大速度梯度的稀疏分布的速度场。该方法包括面多个PRI脱脱和具有空间连续性的脱脱。该方法简单地假设多普勒速度可以通过每个小区域的坐标的线性多项式在空间上近似。去杂音方法是使用模拟数据评估的，该数据包括均匀风，朗肯旋涡，轴对称发散和风移。模拟字段还包括丢失数据和随机噪声。还进行了具有真实观察结果的测试。结果表明，该方法可以成功消除大多数折叠速度。使用2.4 GHz CPU工作站在评估中处理一个PPI数据的处理时间最多只有几秒钟，对于实时雷达观测来说足够短。

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