&gt;&gt; ... you can detect radar before it can detect your return signature.<p>That&#x27;s old thinking.  Cutting edge radar tech involves transmitting in way that is very very hard to detect.  It&#x27;s basically a strong signal spread thin across a wide band so it looks like background noise to the target.  The radar receiver then relies on a massive, literally heavy, computer system to differentiate the returns mathematically from the background.  I&#x27;ve even heard this called &quot;encrypted radar&quot; as it adds creates an asymmetric situation not unlike public key cryptography.  The days of assuming that the target will always hear the radar before detection are over.<p>This works particularly well for aircraft viewed from the ground.  They, looking down at the ground, see a much noisier background than those looking up at them against the sky.<p>Also, much work is being done on very long wavelength radars, with the possibility that an aircraft might not be able to carry a dish large enough to detect the incoming signal while remaining stealthy.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Low-frequency_radar" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Low-frequency_radar</a>