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首页> 外文会议>30th International Conference on Radar Meteorology, Jul 19-24, 2001, Munich, Germany >RANGE AMBIGUITY MITIGATION FOR NEXRAD USING SZ PHASE CODING
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RANGE AMBIGUITY MITIGATION FOR NEXRAD USING SZ PHASE CODING

机译：使用SZ相编码进行NEXRAD的范围模糊消除

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摘要

The new SZ(8/64) code performed well on all cases studied. The method works best when the spectrum width of the weather echo is less than about l/4th of the Doppler unambiguous interval. When the ratio of power in trip-1 and trip-2 becomes larger than 30 to 40 dB, the velocity estimates of the weaker echo will be noisy, or unusable. In this set of data, most of the trip-2 received power values were within 20 dB of the value in the corresponding gate for trip-1 which is substantially below this limit. Within the limitations of a single radar for gathering data, we are highly encouraged by the results. They suggest that perhaps data lost due to ambiguity can be reduced by about a factor of ten, compared to the existing WSR-88D processing methods. It does require about 100 times more signal processing power, but this level of processing power seems attainable and affordable in the near future.
机译：新的SZ（8/64）代码在所有研究的案例中均表现良好。当天气回波的频谱宽度小于多普勒明确间隔的1/4左右时，该方法效果最佳。当跳闸1和跳闸2中的功率之比大于30到40 dB时，较弱回波的速度估计将变得嘈杂或无法使用。在这组数据中，跳闸2的大多数接收功率值都在跳闸1的相应门中的值的20 dB以内，该值基本上低于此限制。在单个雷达收集数据的限制内，我们对结果感到非常鼓舞。他们建议，与现有的WSR-88D处理方法相比，由于歧义性造成的数据丢失可能减少约十倍。它确实需要大约100倍以上的信号处理能力，但是在不久的将来，这种水平的处理能力似乎可以实现并且负担得起。

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