Radio-Frequency Interference Among Linear-FM Radars

The problem of radio-frequency interference (RFI) between radars using linear-FM pulses is examined. For a very large class of cases, the RFI is the same as if the FM were removed; for the cases not in that category, it is shown that the peak response of an unweighted receiver can be closely approximated by a hand calculation. The effects of cosine-on-a-pedestal weighting, in either the frequency or the . time domain, are then considered. Exact expressions for the RFI are developed, and it is shown that, if one is satisfied with knowing the peak of the response, the effect of the weighting can be well approximated by some quite simple expressions.