SIGNAL (programming language)

Repeater (horology)

Engineering

Psychoanalysis

Waveform

Telecommunications

Computer science

Filter (signal processing)

Electronic warfare

Signal processing

Thermodynamics

Physics

Psychology

Astronomy

Sampling (signal processing)

Electronic engineering

Artificial intelligence

Encoding (memory)

Programming language

Radar

Compensation (psychology)

Speech recognition

Computer vision

Doppler effect

Jamming

Ambiguity function

Signal Processing

In modern electronic warfare, interrupted sampling repeater jamming (ISRJ) seriously affects radar target detection performance. It has the advantages of flexible modulation and fast response. The existing approaches mostly require accurate ISRJ parameter estimation and only apply to a specific type of ISRJ. We propose an ISRJ recognition and suppression method based on phase-coded signal processing. By analyzing the cross ambiguity function (CAF) of ISRJ, we find that ISRJ can form multiple peaks, and these peaks are uniformly distributed on the Doppler cut of the CAF. Using this characteristic, we propose an ISRJ recognition method based on Doppler compensation processing. On this basis, a Doppler filtering processing method is proposed to suppress the ISRJ. Both simulated and measured results corroborate the effectiveness of the ISRJ suppression with the developed methods.

Interrupted sampling repeater jamming recognition and suppression based on phase-coded signal processing