垂线偏差对惯性制导初始方位角的影响  

Effect of vertical deflection on inertial guidance azimuth

作　　者：郑应强[1] 康宁民[1] 冯伟利[2] 王玉森[1] 

机构地区：[1]第二炮兵装备研究院,北京100085 [2]北京航天计量测试技术研究所,北京100076

出　　处：《中国惯性技术学报》2010年第2期170-174,共5页Journal of Chinese Inertial Technology

基　　金：第二炮兵装备研究院技术创新基金项目(SA2009KW16)

摘　　要：为了解决由于垂线偏差引起的惯性制导初始方位角误差对导弹落点造成的影响,对地面瞄准系统向弹上惯性制导设备传递基准方位过程中各操作环节与垂线偏差的关系进行了分析,研究了存在垂线偏差条件下惯性制导初始方位角出现误差的机理,给出了垂线偏差所造成的初始方位角误差的修正公式。仿真分析表明,瞄准过程中经纬仪俯仰角是垂线偏差造成初始方位角误差的关键因素,当经纬仪俯仰角为25°,垂线偏差子午圈分量为10",垂线偏差卯酉圈分量为30"时,初始方位角误差高达14.7";而采用经纬仪俯仰角为0°的水平瞄准技术时,同样的垂线偏差带来的初始方位角误差不大于0.001"。To solve the problem of inertial guidance initial azimuth error＇s influences on the missile＇s impact point, the vertical deflection＇s effects in transferring azimuth datum from ground collimation system to missile＇s inertial guidance device are presented. Why and how the vertical deflection induces initial azimuth error are studied. The formula for correcting the initial azimuth error are given. Simulation results indicate that vertical angle of theodolite is key to initial azimuth error, and all other factors such as azimuth angle of theodolite, azimuth angle of target, level and vertical errors between comer cube prism and hexahedron, have few effect which can be ignored. When there is a certain vertical deflection, larger vertical angle of theodolite would result larger error, while the theodolite with zero vertical angle can avoid the vertical deflection＇s influence on inertial guidance azimuth.

关 键 词：垂线偏差 惯性制导 方位角 经纬仪 

分 类 号：U666.1[交通运输工程—船舶及航道工程]