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Originally Posted by Deamon
The one that i have is "Introduction to Electronic Defence Systems" by Filippo Neri
About 530p. Goes through pretty much all subjects, is well illustrated and also comes with lots of formulas. I think there are even more comprehensive treatments of this subject than this. But it's a very good start.
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Thanks for reference. i will try to have look.
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Well, different radio frequencies are being reflected by one of the upper atmosphere layers of the earth. So what you do is to direct the radar antena somwhat upwards and use the upper atmosphere(i think it was the ionosphere or something) as a mirror for the radio waves to get behind the horizon. But i think this requires special radars or something.
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I am read some where like they use low frequency waves to detect long range targets because low frequency wave can bend across the earth more than the high frequency signals.