Design and implementation of a self-correcting non-retrodirective cross-eye jamming system using reference amplitude...

Area of Science:

• Electronic Warfare
• Signal Processing
• Radar Systems

Background:

• Cross-eye jamming (CEJ) performance is sensitive to gain and phase mismatches in dual transmission paths.
• These mismatches degrade the effectiveness of non-retrodirective cross-eye jamming (NRCJ) systems during operation.

Purpose of the Study:

• To present a self-correction method for NRCJ systems to maintain optimal jamming performance.
• To address the degradation of jamming effectiveness caused by gain and phase mismatches.

Main Methods:

• A reference system (RS) measures the transmitted jamming signal's amplitude ratio and phase difference (ARPD).
• The RS compares current ARPD measurements with stored reference values to adjust system parameters (attenuator, phase shifter).
• A prototype NRCJ system at 8 GHz was used to validate the self-correction method with induced errors.

Main Results:

• The self-correction method reduced induced gain and phase errors from 2 dB/3° to within 0.3 dB/1°.
• Cross-eye gain magnitude improved significantly, from 8.57 to 49.5.
• Radar angle tracking error increased from 2.45° to 14.18°, indicating enhanced jamming.

Conclusions:

• The proposed self-correction method effectively compensates for ARPD errors in NRCJ systems.
• This approach enhances the robustness and jamming effectiveness of NRCJ systems for practical applications.
• The study demonstrates a viable solution for maintaining high jamming performance despite operational variations.