Super Dual Auroral Radar Network observations of meteor echoes
Super Dual Auroral Radar Network observations of meteor echoes
复制标题
超级双极光雷达网流星回波观测
DOI：
10.1029/97ja00517
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
C. Meek
中科院分区：
文献类型：
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作者：
G. Hall;J. MacDougall;D. Moorcroft;J. St.‐Maurice;A. Manson;C. Meek
超级双极光雷达网（SuperDARN）在大多数日子里都能观测到距离小于500公里的雷达回波。许多这些回波具有明显不同于人们对E或F区不规则性的期望的特性。我们证明这些不寻常的短波回波是由于流星轨迹的散射。这就解释了为什么从萨斯卡通天线获取的短程回波的多普勒频移与萨斯卡通中频雷达观测到的中间层风相一致。这意味着superdam雷达可以用来研究流星高度的中性风，这一结果特别有趣，因为它开辟了使用全球分布的superdam雷达覆盖全球中间层风的能力。
Radar echoes from ranges less than 500 km are routinely observed by the Super Dual Auroral Radar Network (SuperDARN) on most days. Many of these echoes have properties which are markedly different from what one would expect from E or F region irregularities. We show that these unusual short‐range HF echoes are due to scattering off meteor trails. This explains why, among other things, the Doppler shift from the short‐range echoes taken from the SuperDARN Saskatoon antenna are consistent with the mesospheric winds observed by the Saskatoon MF radar. This means that the SuperDARN radars can be used to study neutral winds at meteor heights, a result which is especially interesting since it opens up the capability for a global coverage of mesospheric winds using the worldwide distribution of SuperDARN radars.