Doppler beam sharpening/ground moving target indication techniques based on space–time adaptive processing for airborne active phased array fire-control radar

Abstract

In order to improve the angle accuracy and meet the requirement of side-lobe blanking, the fire-control radar system usually adopts sum beam, azimuth difference beam, elevation difference beam and several protecting antennas simultaneously. A ΣΔG-STAP method based on sum, difference and protecting channels is proposed to improve the performance of ground moving target detection. Moreover, the target is located on the Doppler beam sharpening image by the monopulse angle estimation technique. The effectiveness of the proposed method is verified using the simulated data and measured data.

Keywords

• radar antennas
• Doppler radar
• antenna phased arrays
• radar detection
• radar imaging
• space-time adaptive processing
• object detection
• phased array radar
• airborne radar
• side-lobe blanking
• fire-control radar system
• sum beam
• azimuth difference beam
• elevation difference beam
• protecting antennas
• ΣΔG-STAP method
• protecting channels
• target detection
• Doppler beam sharpening image
• monopulse angle estimation technique
• space–time adaptive processing
• airborne active phased array fire-control radar
• Doppler beam sharpening
• ground moving target indication techniques