Frequency hopping is a technique used in wireless communication systems to ensure secure and reliable transmission of data. It involves rapidly switching frequencies within a predetermined range during a transmission, making it difficult for unauthorized users to intercept or jam the signal. Frequency hopping is commonly used in military and commercial applications to minimize interference and increase the robustness of communication systems. Research in this area focuses on developing optimized hopping sequences, improving signal processing algorithms, and enhancing the overall performance of frequency hopping systems.