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--- radar:radarequation [2018/06/09 10:58] – [Over The Horizon Radar (OTH)] sidoretti
+++ radar:radarequation [2026/04/28 15:13] (current) – external edit 127.0.0.1
@@ Line 706: / Line 706: @@
 One important characteristic of OTH-B radars is the poor resolution. Nowadays these radars are only used when precision is not needed, being less expensive than satellites. OTH-B radars built during the cold war, instead, were built because there was no better technology at the time, now for such military purposes, the use of satellites has made radars like the Duga obsolete.
-Another way of exploiting the change of refractive index id the conduct effect (Figure {{ref>fig-2.35}}). In particular conditions, in fact, there is an inversion of the behavior of the refractive index, usually decreasing at higher altitudes, that instead starts increasing with the altitude. if the radar antenna is located inside this particular substrate of the atmosphere, the signals transmitted are also contained inside the substrate and can reach distances much greater than usual. In fact, the attenuation is directly proportional to the distance $R$, and not to $R^2$. The conduct effect can only be exploited when particular conditions arise, that depend on the aleatory behavior of the atmosphere. For this, the effect is not reliable.
+Another way of exploiting the change of refractive index is the conduct effect (Figure {{ref>fig-2.35}}). In particular conditions, in fact, there is an inversion of the behavior of the refractive index, usually decreasing at higher altitudes, that instead starts increasing with the altitude. if the radar antenna is located inside this particular substrate of the atmosphere, the signals transmitted are also contained inside the substrate and can reach distances much greater than usual. In fact, the attenuation is directly proportional to the distance $R$, and not to $R^2$. The conduct effect can only be exploited when particular conditions arise, that depend on the aleatory behavior of the atmosphere. For this, the effect is not reliable.
 <figure fig-2.35>