该方案利用了相位累加器的所有有效位，使DDS的性能得到提高，杂散度抑制比达到了- 70 d B。
This scheme utilizes all effective bits of phase accumulator address, and so can improve the performances of DDS, which has -70 dB of spur suppression value.
通过对一次暴雨个例的比较研究表明，在雨带形势和暴雨中心位置的动力识别方面，改进的Q矢量分析方法比传统的单纯依靠Q矢量散度分析方法具有更好的效果。
Through a case study of a torrential rain event, potential advantages of the improved Q analyses approach can be seen in dynamic identification of both the location and the Po.
DDS的优点是具有极高的分辨率、频率转换速率快、相位噪声低等；缺点是杂散度抑制比性能差，很难做到- 65 d B。
DDS has both the advantages of high frequency resolution, rapid frequency change rate and low phase noise and the disadvantage of bad spur suppression performance with Max value of -65 dB.
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