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This part looks rather dated: > A digital signal processor looks for recognizable radio "chirps" that correspond to known radars, and displays their azimuth on
by sobriquet9 5y ago
This part looks rather dated:
> A digital signal processor looks for recognizable radio "chirps" that correspond to known radars, and displays their azimuth on the scope. A chirp is a distinctive waveform that a radio uses.
These days it should be pretty easy to use pseudorandom waveforms, unique each time. LPI radars existed for a while.
- angry_octet 5y agoYes it's a tech appreciation from the SLQ-32 era. But at the same time receiver memory and sensitivity has massively increased, and many properties can be analysed, including the response to deception signals (delayed repetition of various strategies, sidelobe injection). LPI doesn't work for tracking as well as for searching. In the past it would take months for new waveforms to be analysed and platform libraries updated, now it happens in hours.