range frequency meaning in Chinese
测距频率
Examples
- In various high performance , wide dynamic range frequency convertings , phase noise is a main limiting factor
在各种高性能、宽动态范围的频率变换中,相位噪声是一个主要的限制因素。 - The requirement of wide - range frequency and low loss tangent characters materials for advanced radomes were presented , and the progress in the research of polymer - matrix composites for radomes is summarized
摘要介绍了先进雷达罩对罩体材料宽频、低介电损耗值等电性能的要求，并综述了用于雷达罩的聚合物基复合材料的研究进展。 - Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing , pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction . ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain . ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain
通过大量的理论分析和仿真实验，得到了一批具有一定价值的结论：从信号处理的角度出发，对于脉冲式干扰，能够运用时域滑动窗口积累的方法去掉，并且通过预测插值得到较好的恢复；对于高斯白噪声干扰，在时频变换域内应用时频分析方法可减小其对分散点目标的干扰；对于射频噪声，通过平均距离频频法和频域陷波的方法可以去掉；从改变合成孔径雷达系统角度出发，类似双基地雷达能够避免各种干扰，对发射信号进行调幅，调相以及改变调频斜率都是较好的抗干扰方法。