| 1. | Oliver(1942, 1948)has followed meteor trails to measure winds . 奥利弗(1942,1948)曾跟踪流星尾迹测量风。 |
| 2. | Oliver ( 1942 , 1948 ) has followed meteor trails to measure winds 奥利弗( 1942 , 1948 )曾跟踪流星尾迹测量风。 |
| 3. | Furthermore , meteor trails scattering can affect the performance of a beyond - light - of - sight radar system 最后研究了流星余迹散射对超视距雷达性能的影响。 |
| 4. | In this paper the essential characteristics of meteor trails and the reflection and propagation from meteor trails are studied 以圆柱形的电子云为例,研究了欠密类和过密类余迹散射特性。 |
| 5. | When radio waves pass through half of the first jump distance , the effects of meteor trails scattering on a radar system are investigated 计算了电波经电离层跳跃前进的过程中,流星余迹散射对后向散射超视距雷达系统性能如作用距离和发现概率等的影响。 |
| 6. | Shooting can stop as soon as a bright meteor appears . since the endpoints of the meteor trail and the star trails are captured simultaneously , this helps us identify the meteors exact location and the meteor shower to which it belongs 摄影时,若有明亮流星经过拍摄天空,可立即停止摄影,这样流星迹与恒星流迹的最后一点是在同一时间摄得,便可较易辨别其位置,并确定属于那一流星雨。 |
| 7. | The effects of meteor trails scattering on a back scattering beyond - light - of - sight radar detected distance and probability of detection are creatively calculated in theory . it is practicable worth for analyzing the performance of the electronic systems 本文第一次从理论上研究了流星余迹散射对电子系统性能影响,这些结果对研究突发通信系统和超视距雷达系统等电子系统的性能都有一定实用价值。 |
| 8. | The effects of the meteor trails orientation on the size and shape of the footprint on the ground are calculated , which the mechanism of good concealment , antijam and low probability of intercept is explained . this method overcomes the classical limitation 其次用数学的方法研究并计算了流星余迹的方位对地面“足迹”的形状和大小的影响,从而揭示了流星突发通信具有保密性好、抗干扰性、抗拦截的物理机制,克服了经典方法的缺陷。 |