机载单站对机动目标无源定位与跟踪  

Passive locating and tracking of maneuvering targets from single airborne observer

作　　者：周振[1] 王更辰[1] 

机构地区：[1]空军工程大学工程学院,西安710038

出　　处：《电光与控制》2008年第3期60-63,共4页Electronics Optics & Control

摘　　要：机载无源探测定位技术是机载电子对抗中的一个重要的研究领域。针对空间机动目标,建立了机载单站无源定位的三维模型。基于传统测量相位差变化率的方法,增加了多普勒及其变化率信息,探讨了其定位原理,重新推导了定位公式;给出了其中的预处理过程和系统状态方程,并引入了可调白噪声UKF滤波算法以提高对机动目标的跟踪定位精度和收敛速度。通过计算机仿真,验证了该方法的正确性及有效性。The technology of onboard passive detection and location is an important research field of airborne Electronic Counter Measures （ECM）. A 3-dimensional model is set up for passive locating of the maneuvering targets in space by single airborne observer. Based on traditional methods for measuring the change rate of phase difference, Doppler and its change rate information are added. The locating principle is discussed, and the formulae for location are re-deduced. The pre-processing and system state equations are presented. A Unscented Kalman Filter （UKF） approach for white noise model with adjustable level is proposed to improve the locating and tracking accuracy. With the help of computer simulation, the method is proved to be correct and effective.

关 键 词：机动目标 无源定位 相位变化率 UKF 

分 类 号：V243[航空宇航科学与技术—飞行器设计] TN958[电子电信—信号与信息处理]