Early Warning Radar
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An early warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as early as possible before the intruder reaches its target, giving the defences the maximum time in-which to operate. This contrasts it with systems used primarily for tracking or gun laying, which tend to be shorter range but offer much higher accuracy.The first early warning radars were the British Chain Home, the US CXAM (Navy) and SCR-270 (Army), and the German Freya. By modern standards these were quite short range, typically about 100 to 150 miles....
An early warning radar is any radar system used primarily for the long-range detection of its targets, i.e., allowing defences to be alerted as early as possible before the intruder reaches its target, giving the defences the maximum time in-which to operate. This contrasts it with systems used primarily for tracking or gun laying, which tend to be shorter range but offer much higher accuracy.The first early warning radars were the British Chain Home, the US CXAM (Navy) and SCR-270 (Army), and the German Freya. By modern standards these were quite short range, typically about 100 to 150 miles. This "short" distance is a side effect of radio propagation at the long wavelengths being used at the time, which were generally limited to line-of-sight.
