Hi everyone, I hope some people can shed some light on this for me. I was wondering why there seems to be no sidelobe clutter (especially altitude returns) in PULSE SEARCH mode. I have searched but couldn't find anyone mentioning sidelobe clutter except in relation to Pulse Doppler.
I understand that in Pulse Doppler, both main lobe clutter and altitude returns are filtered (MLC filter and Zero-Doppler filter respectively), and that the zero-doppler filter cannot be deactivated. However, it occurs to me that in Pulse Mode, the sidelobes should also be a problem, and shouldn't altitude returns also appear, at a distance roughly equal to the aircraft's current height? A sidelobe pointing at the ground in pulse mode would create a return, wouldn't it?
Is there still some Doppler processing anyway with the zero-doppler filter even in Pulse, or some other way of filtering out aititude returns, or is it simply not implemented? Or am I missing something?