First observational results with the newly developed cloud profiling FM-CW radar at 95 GHz
First observational results with the newly developed cloud profiling FM-CW radar at 95 GHz
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新开发的云剖面 FM-CW 雷达在 95 GHz 下的首次观测结果
DOI：
10.1117/12.511586
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发表时间：
2004
影响因子：
12.6
通讯作者：
T. Nakajima
中科院分区：
文献类型：
--
作者：
T. Takano;Y. Suga;K. Akita;Y. Kawamura;H. Kumagai;T. Takamura;Y. Nakanishi;T. Nakajima
我们研制了一台用于地面观测的95 GHz调频连续波(FM-CW)云廓线雷达。利用频率为95 GHz的毫米波实现对小云粒子的高灵敏度。FM-CW型雷达具有与脉冲型雷达相似的灵敏度，但输出功率要小得多。两个直径为1米、相距1.4米的抛物面天线用于发射和接收波。天线的方向固定在天顶。该雷达被设计用来观测0.3至15公里高的云，分辨率为15米。使用该设备，已经完成了测试观测和长期战役观测。观测结果表明，该系统具有足够的灵敏度和稳定性，可以观测各种云。
We developed a cloud profiling radar transmitting frequency-modulated continuous wave (FM-CW) at 95 GHz for ground-based observations. Millimeter wave at 95 GHz is used to realize high sensitivity to small cloud particles. An FM-CW type radar would realize similar sensitivity with much smaller output to a pulse type radar. Two 1m-diameter parabolic antennas separated by 1.4m each other are used for transmitting and receiving the wave. The direction of the antennas is fixed at the zenith. The radar is designed to observe clouds between 0.3 and 15 km in height with a resolution of 15 m. Using the facility, test observations and long term campaign observations have been done. Results of observations show that the system is sensitive and stable enough to observe various clouds.