基于逆绕射抛物方程法的辐射源定位技术研究  

Passive location based on inverse diffraction parabolic equation

作　　者：李德鑫[1,2] 杨日杰[1] 王鸿吉[1] 蒋志忠[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001 [2]空军哈尔滨飞行仿真技术研究所,黑龙江哈尔滨150001

出　　处：《电波科学学报》2011年第4期683-687,822-823,共7页Chinese Journal of Radio Science

基　　金：航空科学基金(20095184005);泰山学者建设工程专项经费资助;国家自然科学基金(61002006)

摘　　要：对非合作辐射源的定位是当前热点及难点问题,逆绕射抛物方程法对于复杂环境下的无源定位有着很好的适用性和稳定性。在理想大气辐射源定位的基础上,分析了标准大气、地形遮蔽条件下一个和两个辐射源的定位问题,提出了数据点取值、误差椭圆绘制等方法,研究了数据点数目、折射指数、地形高度等参数与定位误差之间的关系。通过仿真分析,验证了算法特性并给出了参数取值的方法及建议,提高了算法的定位精度,扩大了算法的应用范围。Passive location of non-cooperative illuminators is a pivotal problem. The algorithm of inverse diffraction parabolic equation with good applicability and stability is widely used for the application of passive location in complex environment. Based on the location method in the symmetrical atmosphere, the location schemes of single and couple illuminators are analyzed in the situation of standard atmos- phere and terrain defilade. The methods of the effective data selection and error ellipse protraction are proposed, and the relationship between data number, refraction index, terrain height and location error is investigated in this paper. The suggestions on the parameters selection are presented, which improve the location accuracy and extend the application area of this algorithm.

关 键 词：非合作辐射源 无源定位 抛物方程 复杂环境 

分 类 号：TN951[电子电信—信号与信息处理]