| 1. | Range of pulse repetition frequency
脉冲重复频率范围 |
| 2. | Pulse repetition frequency
脉冲重复频率 |
| 3. | Pulse recurrence frequency
脉冲重复频率 |
| 4. | Pulse repetition rate
脉冲重复频率 |
| 5. | A new method to estimate doppler centroid and doppler rate applicable to real flight condition is proposed
该方法设置飞机速率和脉冲重复频率比为常数，保证方位向接收信号均匀空间取样，使用实时最小二乘拟合算法。 |
| 6. | They are the property of sum and difference beams , the errors of the elements and channels and different pulse repeating frequency ( prf )
这些因素包括和、差波束的特性、阵元和通道的误差、不同的脉冲重复频率( prf ) 。 |
| 7. | The maximum 50500 photo counts per second with 76mhz pump pulse frequency is detected . the probability to be single - photon state of every count is better than 99 % 5
在抽运光脉冲重复频率为76mhz的情况下，得到了每秒50500次的下转换光子记数，其中单光子概率大干99 。 |
| 8. | In this dissertation , this conclusion is proved to be true . a new altimeter tracker , the model - compatible tracker ( mct ) , is designed to realize the compatible measurement for both ocean and land
( 6 )高脉冲重复频率可以提高在大浪条件下的测高精度，本文对这一结论进行了理论推导，证明了这一结果的正确性。 |
| 9. | Female courtship signal of the brown planthopper was made of many continuous regular pulses and male ' s signal was made of similar syllabics and had two types with different time domain characteristics . second male vibrational signal differed from male courtship signal with wide spectrum range and regular syllabics frequency . time domain characteristics of signals in different individuals even the same individual were different
频域特征分析知，褐飞虱雌虫求偶呜声信号的频域特性较稳定，个体内比个体间差异小；雄虫求偶呜声信号s 、 e片段频谱范围较宽，但主振频率比较接近，差异不显著； m片段频带较窄，主振频率mvf略小于s 、 e片段，变异较小； m片段脉冲重复频率prf为幻 |
| 10. | This paper ' s study is focused on the principle of bistatic sar on the basis of giving a brief introduction of sar principle , including azimuth resolution , mapping width , focusing deepness , pulse repetition frequency limitation and radar equation etc . then the paper studies the special form of bistatic sar with stationary transmitter
在简要介绍了合成孔径雷达的成像原理后，本文着重从原理方面对双站sar进行了分析，讨论双站sar的方位向分辨率，测绘带宽，聚焦深度，脉冲重复频率限制，雷达方程等问题，然后对发射机固定的双站sar这种特殊的双站sar模式进行分析。 |
