论文部分内容阅读
1.前言开阔的海洋和沿海海运环境包括垂直和水平折射指数变化,这些变化对工作在微波频率处的船运系统有深刻的影响。有时可能会使通信中断或遭受干扰,使雷达系统会扩展或减少目标探测范围、增大表面干扰以及变更高度估算。这些影响随时间、季节、地理位置和频率等而变化。机载微波折射仪给出了精确的、高分辨率的无线电折射率数据来为操作系统研制有用的判定设备。它表明折射率的实际变化范围已达几厘米的数量级。这个信息可能极大地
1. Introduction Open sea and coastal shipping environments include vertical and horizontal refractive index changes that have a profound impact on shipping systems operating at microwave frequencies. Interruptions or interruptions in communications may sometimes be caused so that the radar system can expand or reduce the target detection range, increase surface disturbances, and alter altitude estimates. These effects vary with time, season, geographical location and frequency. Airborne microwave refractometers give accurate, high-resolution radio-refractive index data for the development of useful operating system decision-making equipment. It shows that the actual range of refractive index has reached the order of a few centimeters. This information can be extremely great