最近30从www.hoelymoley.com 2023 - 07 - 09 - t19:06:32z //www.hoelymoley.com/feeds/user/19098 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/19412 5 ckrk //www.hoelymoley.com/users/19098 2020 - 03 - 09 - t19:18:55z 2020 - 03 - 21 - t04:06:00z

< p >遥感雷达是一种常见的工具,它是一个所谓的活跃的工具,因此它发出和接收能量。现代Syntethic孔径雷达(SAR)系统能够传输和接收极化波。最常见的偏振是水平<跨类= " math-container " > (H) < / span >美元和垂直类< span = " math-container " > (V) < / span >极化美元,尽管其他的存在。使用H和V导致4可能的发射和接收信号的组合:< / p > < p > <跨类= " math-container " > $ $ HH, VV,高压,VH, $ $ < / span > < / p > < p >解读为传播第一,收到后(即< span class = " math-container " >高压< / span >美元意味着传输水平极化波和接收只有垂直极化波)。< / p > < p >我可以相对容易地想象的使用< span class = " math-container " > HH美元< / span >和<跨类= " math-container " > VV < / span >美元copolarized波。他们应该更容易反映的对象有一个稍长的几何结构。大< span class = " math-container " > VV < / span >美元和小类< span = " math-container " > HH < / span >美元可能会像显示一样的结构和小类< span = " math-container " > VV < / span >美元和大型类< span = " math-container " > HH < / span >美元应该表明bridge-like结构。< / p > < p >然而我并不明显结构将反映出正交极化波<跨类= " math-container " >高压美元< / span >或<跨类= " math-container " > VH < / span >美元比< span class = " math-container " > HH美元< / span >或<跨类= " math-container " > VV < / span >美元吗?此外,之间的区别是什么对象,反映了< span class = " math-container " > VH < / span >美元和一个对象,反映了< span class = " math-container " >高压< / span >美元? < / p >

//www.hoelymoley.com/questions/19412/what-is-the-use-of-hv-or-vh-polarization-in-radar/19478?cid=43450 # 19478 ckrk //www.hoelymoley.com/users/19098 2020 - 03 - 21 - t14:04:13z 2020 - 03 - 21 - t14:04:13z

谢谢你的答案,它解决了95%的我的问题了。你的解释很有道理,我现在感觉我得到正交极化信号背后的想法。One thing is yet remaining, im still pondering the VH & HV differences. Your answer seem to indicate that mostly HV and VH will simply be equal. However, my understanding is that a smooth tower has large HH, a rough tower has large HV. My intuition is that conversly a tower should have little VV and only slighter larger VH depending on its roughness. Hence HV and VH would not match for a tower. Would you agree?

//www.hoelymoley.com/questions/19412/what-is-the-use-of-hv-or-vh-polarization-in-radar?cid=43276 ckrk //www.hoelymoley.com/users/19098 2020 - 03 - 10 - t16:17:37z 2020 - 03 - 10 - t16:17:37z

@uhoh谢谢你,我认为它不是很明显!我的合作者似乎使用它在一个非常经验时尚(即试验和错误的可能性),不能给一个直觉。我甚至检查遥感教科书,它没有回答这个问题,尽管提及高压的存在和VH偏振....

map