FFA320天气雷达的使用

babyfan

The weather radar has two main functions:
• Weather detection
• Mapping.
Weather detection is the primary function. For weather detection, the radar detects precipitation droplets. The strength of the echo is in proportion to the droplet size,composition and quantity (e.g. the reflection of water particles is five times greater than ice particles of the same size). Therefore, the weather radar does not detect weather that has small droplets (e.g. clouds or fog), or that does not have droplets (e.g. clear air turbulence).
Mapping is the secondary function. For mapping, the echo takes into account the difference between incoming and outgoing signals. Any significant difference in the signal
is easily mapped (e.g. mountains or cities), but a small difference in the signal is not mapped (e.g. calm sea or even ground).

TILT
”Tilt” is the angle between the antenna radar and the horizon, irrespective of the aircraft’s pitch and bank angles. The antenna stabilizes by using IRS data.


To help avoid weather, it is important to efXXXtively manage the tilt, taking into account the flight phase and the ND range.Usually, it is the appropriate tilt value that provides ground returns on the top of the ND. In case of overscanning, a cell may not be detected or may be underestimated, when the radar beam scans the upper part of the cell. This occurs because, at high altitude,this cell may have ice particles, and therefore the reflection of these particles is weak.If AUTO TILT function is installed, selecting AUTO ensures a proper tilt management
along the flight.


GAIN
Gain control is mostly used in AUTO/CAL mode. The detection or evaluation of cells will always start in AUTO/CAL gain mode. However, the gain may be manually tuned to detect the strongest part of a cell displayed in red on the ND. If the gain is slowly reduced, the red areas (level 3 return) will slowly become yellow areas (level 2 return), and the yellow areas will become green areas (level 1). The last part of the cell to turn yellow is the strongest area.The gain must then be reset to AUTO/CAL mode.

MODE
The operation modes are WX, WX+T, TURB, MAP.WX+T or TURB modes are used to locate the wet turbulence area. TURB mode detects wet turbulence within 40 nm, and is not afXXXted by the gain. TURB mode should be used to isolate turbulence from precipitation.

GCS (FF320没有模拟）
The Ground Clutter Suppression (GCS) operates in WX mode, and inhibits the ground echoes on the ND.It is sometimes difficult to differentiate between weather and ground returns. A
change in tilt rapidly changes the shape and color of ground returns and eventually makes them disappear. This is not the case for weather.

RCT
The React (RCT) function is used temporarily to help detect weather or buildups beyond of the weather already detected.

PWS（FF320没有模拟）
Refer to SI-010 WINDSHEAR on adverse weather.

Note: It is difficult to differentiate between weather returns and ground returns: A change in TILT causes the shape and color of ground returns to change rapidly.These ground returns eventually disappear. This is not the case for weather returns.


请大家自行翻译吧！

3227

ff320 电脑升级后序列号不能用了，怎么处理啊

s1515882559

哇 谢谢大佬 实用

snakespy

天气雷达具有两个主要功能：
•天气检测
•制图。
天气检测是主要功能。为了进行天气检测，雷达会检测到降水滴。回波的强度与液滴的大小，成分和数量成正比（例如，水颗粒的反射比相同大小的冰颗粒的反射大五倍）。因此，天气雷达不会检测到具有小水滴（例如云或雾）或没有水滴（例如晴空湍流）的天气。
映射是第二功能。对于映射，回声考虑了传入和传出信号之间的差异。信号有任何明显差异
可以轻松地绘制地图（例如，山脉或城市），但信号中的微小差异却无法绘制（例如，平静的海面甚至地面）。

倾斜
“倾斜”是指天线雷达与地平线之间的角度，与飞机的俯仰角和倾斜角无关。天线通过使用IRS数据来稳定。

  
为了避免天气，重要的是要有效地管理倾斜度，同时要考虑飞行阶段和ND范围。通常，适当的倾斜值可以在ND顶部提供地面返回。在过度扫描的情况下，当雷达波束扫描该单元的上部时，可能未检测到某个单元或该单元可能被低估。发生这种情况的原因是，在高空，该单元可能有冰粒，因此这些粒子的反射较弱。如果安装了AUTO TILT功能，则选择AUTO可确保
沿飞行进行适当的倾斜管理。


获得
增益控制主要在AUTO / CAL模式下使用。单元的检测或评估将始终在AUTO / CAL增益模式下开始。但是，可以手动调整增益以检测ND上以红色显示的单元的最强部分。如果增益缓慢降低，红色区域（3级返回）将缓慢变为黄色区域（2级返回），而黄色区域将变为绿色区域（1级）。电池变黄的最后一部分是最强的区域，然后必须将增益重置为AUTO / CAL模式。

模式
操作模式为WX，WX + T，TURB，MAP.WX + T或TURB模式用于定位湿湍流区域。TURB模式可检测40 nm内的湿湍流，并且不受增益影响。应使用TURB模式将湍流与降水隔离。

GCS（FF320没有模拟）
地面杂波抑制（GCS）以WX模式运行，并抑制ND上的地面回波，有时很难区分天气和地面回波。一个
在倾斜的变化迅速改变形状和接地回路的色彩，并最终使他们消失。天气不是这种情况。

RCT
React（RCT）功能暂时用于帮助检测天气或超出已经检测到的天气的堆积。

PWS（FF320没有模拟）
有关不利天气的信息，请参阅SI-010 WINDSHEAR。

注意：很难区分天气回报和地面回报：TILT的变化会导致地面回报的形状和颜色迅速变化，这些地面回报最终消失了。天气返回并非如此。

ddm45

哇 谢谢大佬 实用

LSSAC

哇谢谢大佬实用

rubin

感谢分享，这个实用。

1019808728

感谢分享 学到了

paolc

学习了，谢谢分享~~~