Open AccessCountering self‐protection smeared spectrum jamming against chirp radars
Author(s) -
Baher Safa Hanbali Samer
Publication year - 2021
Publication title -
iet radar, sonar and navigation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.489
H-Index - 82
eISSN - 1751-8792
pISSN - 1751-8784
DOI - 10.1049/rsn2.12046
Subject(s) - jamming , radar jamming and deception , chirp , signal (programming language) , radar , computer science , digital radio frequency memory , chirp spread spectrum , echo (communications protocol) , electronic engineering , process gain , electronic countermeasure , spread spectrum , acoustics , pulse doppler radar , direct sequence spread spectrum , telecommunications , engineering , physics , radar imaging , computer security , optics , code division multiple access , programming language , laser , thermodynamics
Abstract Chirp radars are vulnerable to various types of deceptive jamming for example, smeared spectrum (SMSP) jamming that generates multiple false targets, which lead and lag the true target. Unfortunately, the radar system cannot distinguish the true target from the false ones because the jamming signal looks like the true target echo. A new anti‐jamming technique to suppress false targets and identify the true target easily is introduced. The proposed technique benefits from the fact that SMSP jamming signal has a different frequency modulation slope from that of the radar signal. Therefore, the differences between SMSP jamming signal and the true target echo can be identified. The efficiency of the proposed technique is confirmed by theoretical analysis and simulation experiments.