1) geodetic azimuth
大地方位角
2) geographical azimuth
地理方位角
3) broad azimuth trace
宽方位角线;大方位角线
4) large azimuth angle
大方位失准角
1.
This filter is applied in initial alignment of SINS with large azimuth angle on stable base,and the simulation results show that the new filter is more effective and its precision is h.
静基座大方位失准角的捷联惯导系统误差方程是非线性的,Unscented粒子滤波从非线性系统状态向量概率分布出发,结合Unscented卡尔曼滤波和粒子滤波的特点,无需对非线性系统模型进行处理而能达到较高的滤波精度。
5) large azimuth misalignment angle
大方位失准角
1.
The non-linear error model of strap-down inertial navigation system(SINS) on stationary base with large azimuth misalignment angle is analyzed.
针对捷联惯导系统大方位失准角的情况,分析了系统非线性误差模型,提出了基于最优重要性分布函数的序贯重要性采样粒子滤波(SIS-PF)初始对准方法,并进行了仿真研究。
2.
This model transferred large azimuth misalignment angle problem between aircraft coordinate and aircraft real coordinate cosine matrix into small azimuth misalignment angle problem between aircraft nominal coordinate and aircraft real coordinate,the linearization of error model was given and simulated via velocity matching method.
为解决舰载机惯导系统在大方位失准角条件下的初始对准问题,建立舰载机惯导系统传递对准误差模型。
6) large heading misalignment angle
大方位失准角
1.
Since traditional EKF could introduce linearization error and then reduce the alignment accuracy,an errors model of SINS with the large heading misalignment angle on moving bases was derived and a particle filter(PF) was developed.
捷联惯性导航系统大方位失准角的误差模型是非线性的,传统的扩展卡尔曼滤波(Extended Kalman Filter,EKF)会产生线性化误差,影响初始对准精度。
补充资料:方位角
方位角
azimuth
fangweiiiao方位角(az imuth)从地面上某点的指北方向线起,顺时针方向至目标方向线之间的水平夹角。用度或密位表示。按指北方向线的不同,分为真方位角、坐标方位角、磁方位角等。军事上主要用于指示目标,现地判定方位,赋予火炮和导弹武器的射击方向,提供飞机、舰船的导航数据。真方位目二 方位角的种类角(A),是以真子午线(真北)为基准方向,顺时针量到某一指定目标方向的水平夹角。由专门仪器用大地天文测量方法测定,也可用陀螺经纬仪直接测定,由0。一360“量度。坐标方位角(a),是以高斯投影平面坐标网中的坐标纵线(坐标北)为基准方向,顺时针量到某一指定目标方向的夹角。可用经纬仪或方向盘测角进行推算,也可以由其他方位角换算,由OD一360“量度。磁方位角(M),是以磁子午线(磁北)为基准方向,顺时针量到某一指定目标方向的夹角。用带磁针(罗盘、罗针)的测角仪器测定,由0o一3600量度。同一点的3个指北方向(真北、坐标北、磁北),一般是不一致的。真北方向与坐标北方向之间的夹角,称为子午线收敛角(门)。真北方向与磁北方向之间的夹角,称为磁偏角(时。3种方位角在平面上的关系为:A~。+门,A=M+己。 (匀萃山)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条