Airborne satellite communication and navigation equipment is susceptible to many jamming sources such as natural environment,artificial electromagnetic radiation and internal noise of the system,which seriously affects the quality of communication and navigation accuracy.Although the current anti-jamming technology has made some progress,it still faces many challenges,such as multi-path effect suppression,dynamic complex environment adaptation and anti-jamming performance bottleneck under high data rate.The key technologies to improve the anti-jamming performance mainly include adopting advanced signal processing algorithms,such as Rake receiver,intelligent diversity,Turbo/LDPC coding,etc.;Design intelligent adaptive system architecture,such as adaptive an-tenna arrays,beamforming,and machine learning assisted anti-jamming strategies;Integrating multiple anti-interference technologies,such as MIMO,adaptive modulation and coding,and spectrum sensing and intelligent al-location technology.Through the comprehensive application and continuous research and development of these technologies,it is expected to achieve high reliable and robust operation of airborne satellite communication and navigation in complex electromagnetic environment.
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