摘要
为了提高红外探测系统的灵敏度,对一种多元探测红外位标器的振动噪声进行了研究。列举了影响红外信号的噪声类型,分析了振动噪声可能产生的各种原因,建立了振动噪声的传递函数,并提出用减振的方法即隔离弹体振动的方法降低位标器的振动噪声。根据此种位标器的特点,建立了减振系统的数学模型,得到位标器振动模型的微分方程并对该微分方程求解。本文的创新点在于运用拉格朗日动力学方程解决了红外系统的振动噪声问题,并在工程中予以成功应用。
To improve the sensitivity of IR system, a research on reducing the vibrating noise of a multi-sensor IR seeker is given. Several kinds of noise that possibly affect the infrared signal are introduced ,various causes that perhaps bring vibrating noise are analyzed,and the transfer function of the vibrating noise is constructed.A method is presented which can be used to reduce the vibrating noise by decreasing the vibrating amplitude or separating the vibration of missile from the seeker.According to the characteristics of the seekerr,a kind of mathematical model of decreasing the vibrating amplitude is constructed and the differential coefficient equation of vibrating model of seeker is derived.The problem of vibrating noise of IR system is solved by using LAGRANGE dynamic equation and the method is applied in practice successfully.
出处
《红外与激光工程》
EI
CSCD
北大核心
2006年第1期31-34,共4页
Infrared and Laser Engineering
基金
国家重点预研项目
