The performance of frequency-hopped (FH)

-ary frequency-shift keyed (MFSK) signals in partial-band noise has been extensively analyzed in the open literature. This paper extends the previous research to the usually more effective class of multitone jamming. Specifically, this paper will 1) categorize several different multitone jamming strategies; 2) analyze the performance of FH/MFSK signaling, both uncoded and with diversity, assuming a noncoherent energy-detection metric with linear combining and perfect jamming-state side information, in the presence of worst-case interference for each of these multitone categories; 3) compare the effectiveness of the various multitone jamming techniques, and contrast the results with the partial-band noise jamming case.