Testing on Anti-jamming Performance of Tracking Loop for Frequency Hopping System

Frequency Hopping (FH) system is widely researched by its strong anti-jamming performance. Focusing on the common jamming of tracking loop for FH system, the typical jamming signal features are analyzed, which including full-band jamming, partial-band jamming and tracking jamming signals. The anti-jamming performance of the synchronous tracking loop on FH system is tested, which focused on the modulation of QPSK. Simulation testing results shows that FH system has strong anti-full-band jamming and anti-partial-band jamming performance, the system has weak anti-single-tone-tracking jamming and anti-double-tone-tracking jamming performance, and the anti-tracking jamming performance will be weaker with the DTR increasing of the jamming signal.