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- 70d 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- 65d 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.
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- 65d 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.
应用推荐