滚仰式平台标准口字形搜索的四元数法实现  

Quaternion method for standard mouth searching of roll-pitch infrared platform

作　　者：王军平[1,2] 詹训慧[2] 

机构地区：[1]西北工业大学机电学院,陕西西安710072 [2]中国空空导弹研究院,河南洛阳471009

出　　处：《红外与激光工程》2013年第10期2625-2629,共5页Infrared and Laser Engineering

基　　金：航空科学基金(20110112007)

摘　　要：按照标准图像搜索是红外导引平台的重要功能之一,能够弥补小视场,提高导引头截获目标能力。对于滚仰式两轴平台,分析了采用两轴依次扫描实现标准图像搜索方法所引起的图形畸变。利用四元数递推求解球面直线约束方程,提出了一种分段搜索实现方法,实现了标准口字型的搜索图形;该分段实现方法实现约束少,计算量少,高效解决了分段逼近搜索的求解问题。使用MATLAB搭建了虚拟仿真模型验证了分段搜索方法的有效性;该方法不仅可以实现前半球视场任意位置标准口字形搜索,并可推广至相类似导引头中实现任意形状的搜索图形。The ability to search in accordance with standard graphics is one of the key capabilities of IR seeker , which can make up small filed of view and improve the ability of target acquisition . For roll-pitch infrared platform , the searching graphic distortion was analyzed by using the common method that the two orthogonal axes scan in turn . The standard mouth searching was carried out by a new proposed segmented scan method , which a recursively solving spherical arc line constraint equation based on quaternion was used . This segmented method was constrained less and the algorithm was small amount of calculation . It was a more efficient solution to solve the approximation search problem . A virtual simulation system was built using the MATLAB ToolBox and the validity of the segmented scanning method was also proved . This method can not only implement the standard mouth searching pattern at any position in the front hemisphere scene , but also be used for any arbitrary shape search pattern for the analogous seeker .

关 键 词：红外滚仰式平台 口字形搜索 四元数 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]