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首页> 外文期刊>Proceedings of the IEEE >Design of a bistatic dual-Doppler radar for retrieving vector winds using one transmitter and a remote low-gain passive receiver
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Design of a bistatic dual-Doppler radar for retrieving vector winds using one transmitter and a remote low-gain passive receiver

机译：一种使用一个发射机和一个远程低增益无源接收机来检索矢量风的双基地双多普勒雷达的设计

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摘要

A bistatic dual-Doppler network consisting of an existing single transmitting pencil-beam weather radar and a remotely located, nontransmitting, passive bistatic receiver with a low-gain antenna was constructed and tested during 1993. High-quality dual Doppler vector winds were retrieved from this system. The windfields were compared with those collected with a traditional two-transmitter dual-Doppler system. Several interesting engineering challenges relating to frequency and timing synchronization were resolved in order to retrieve successfully Doppler velocities at a remote bistatic site. Frequency synchronization was achieved by using extremely stable local oscillators, linked by both Global Positioning Satellite (GPS) signals and transmitter sidelobe coupling. Both methods provided the necessary one part in 10/sup 9/ coherence necessary for calculating accurate Doppler velocities. Timing/gating synchronization with submicrosecond accuracy was achieved by using local oscillators at each site linked with GPS and sidelobe coupling. The successful testing of this system demonstrates that inexpensive and practical bistatic multiple-Doppler networks can be deployed. These systems can provide three-dimensional vector winds for a number of purposes in research, aviation, media, weather prediction, education, meteorological modeling and severe weather detection.
机译：在1993年期间构建并测试了一个双基地双多普勒网络，该网络由一个现有的单发射笔形天气雷达和一个远程定位的非发射无源双基地接收机（带有低增益天线）组成，并在1993年进行了测试。这个系统。将风场与传统的两发射机双多普勒系统收集的风场进行了比较。解决了与频率和时序同步有关的几个有趣的工程挑战，以便成功地在远程双站站点检索多普勒速度。通过使用极其稳定的本地振荡器（通过全球定位卫星（GPS）信号和发射机旁瓣耦合）实现频率同步。两种方法都为计算准确的多普勒速度提供了十分之一的必要性，即10 / sup 9 /相干性。通过在每个站点使用与GPS和旁瓣耦合相联系的本地振荡器，可以实现亚微秒级精度的定时/门控同步。该系统的成功测试表明，可以部署廉价且实用的双基地多普勒网络。这些系统可以为研究，航空，媒体，天气预报，教育，气象建模和恶劣天气检测中的许多目的提供三维矢量风。

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