摘要
研究雷达性能问题,脉间频率捷变与MTD兼容的工作方式是雷达抗干扰和抑制杂波重要手段,能够同时有效的抑制有源干扰和固定杂波,提高雷达的电子对抗能力。由于脉间频率捷变使扫描间起伏目标变成了脉间起伏目标,不同频率脉冲回波得到的信噪比起伏较大,造成目标检测的困难。因此,提出一种改进算法,在抽取同频回波进行MTD的基础上,对不同频率回波进行非相参积累。非相参积累对信号具有平滑作用,仿真结果表明,新算法能够有效的改善信噪比起伏,提高目标的识别能力。
The compatible radar system of pulse-to-pulse frequency agility and MTD can effectively reject the active jamming and fixed clutter simultaneously and enhance the ability of radar electronic countermeasure.The MTD processing can only be carried out based on echoes of the same frequency transmission.Pulse-to-pulse frequency agility makes scan-to-scan fluctuating targets become pulse-to-pulse fluctuating targets,and the signal to noise ratio between different frequencies fluctuates greatly.This paper presents an improved algorithm that non-coherent integration is used between different frequencies after MTD processing on the same frequency transmission.The results show that non-coherent integration can effectively improve the amplitude fluctuations and enhance target detection capability
出处
《计算机仿真》
CSCD
北大核心
2011年第2期5-8,61,共5页
Computer Simulation
关键词
脉间频率捷变
动目标检测
非相参积累
Pulse-to-pulse frequency agility
MTD
Non-coherent integration
