Overview of Radar High-speed Target Detection Algorithms Based on Long Time Accumulation
The development of stealth technology and high-speed aircraft has brought serious challenges to radar target detec-tion,and the long time accumulation technology is an effective method to improve the signal-to-noise ratio(SNR)in the field of sig-nal processing.For high speed and high maneuvering targets,signal accumulation over a long period of time will cause the problem of moving across the range unit and moving across the Doppler unit.The"two-migration"problem will seriously affect the accumu-lation gain,and the traditional MTD(Moving Target Detection)method has been unable to accumulate the energy of the signal.In order to solve the"two-migration"problem and improve radar detection performance of high-speed targets,many methods have emerged in recent years.Based on the target motion model,this paper will analyze long-term accumulation into three categories:long-term accumulation under uniform radial motion,long-term accumulation under accelerated radial motion,and long-term accu-mulation under complex radial high-order motion.This paper summarizes and presents the"two-migration"problems and solutions under the corresponding model,aiming to provide reference for subsequent research.
Long-term accumulationRange migrationDoppler frequency migrationObject detection
万方数据
维普
