The united detection of the stationary or slow-moving-speed targets in the clutter based on the high range resolution (HRR) and Doppler beam sharpening (DBS) technique

During air-to-ground guided missile scanning of the area of interest and detection of targets, mass ground clutter enters the radar receiver with the target echoes, so that the radar cannot distinguish targets from the clutter. Therefore, the radar's detection capability is seriously influenced by the clutter. Because the ground clutter has a space-time two-dimensional property, traditional detection techniques cannot be used. The paper presents a united detection technique based on high range resolution (HRR) and Doppler beam sharpening (DBS) to fulfill the detection. The united detection technique uses simplified range-Doppler arithmetic to get the signal-to-clutter ratio gain and get the two-dimensional multiple scatterer image, thereby improving the radar's detection capability in clutter. A computer simulation has been done and the results demonstrate that the united detection technique achieves good results, and the technique is valid and easy to perform.