ECCM Schemes against Deception Jamming Using OFDM Radar with Low Global PAPR

Area of Science:

• Electrical Engineering
• Signal Processing
• Radar Systems

Background:

• High-power deception jamming poses a significant threat to radar systems.
• Orthogonal frequency division multiplexing (OFDM) radar offers potential for advanced signal processing.
• Existing electronic counter-countermeasures (ECCM) techniques may be insufficient against sophisticated jamming.

Purpose of the Study:

• To propose an effective ECCM technique for OFDM radar against high-power deception jamming.
• To develop methods for suppressing velocity, range, and joint range-velocity deception jamming.
• To optimize phase codes of OFDM subcarriers while managing the peak-to-average power ratio (PAPR).

Main Methods:

• Designing pulse initial phases to create Doppler spectrum notches for velocity deception jamming.
• Optimizing subcarrier phase codes to minimize jamming power in range and range-velocity domains.
• Formulating and solving a non-convex optimization problem for phase code optimization using the Phase-Only Alternating Direction Method of Multipliers (POADMM).

Main Results:

• The proposed ECCM technique effectively suppresses various types of deception jamming.
• Phase encoding ensures constant energy per OFDM symbol, as per Parseval's theorem.
• The POADMM method successfully optimizes phase codes under global PAPR constraints.

Conclusions:

• The developed radar signaling strategy provides effective suppression of high-power deception jamming.
• The POADMM algorithm offers a viable solution for optimizing phase codes in OFDM radar ECCM.
• The proposed technique enhances the resilience of OFDM radar systems against sophisticated jamming attacks.