航路点方位校正方法在飞行器导航中的应用研究  

Research and Application of Landmark Azimuth Correction Algorithm in Aircraft Navigation

作　　者：白亮[1] 秦永元[1] 成研[1] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072

出　　处：《计算机测量与控制》2010年第3期611-613,628,共4页Computer Measurement &Control

摘　　要：方位误差是造成航位推算误差的主要误差源之一,利用航路点来提高方位对准精度在车辆导航中是一种非常有效的方法;在对航位推算误差进行分析的基础上,给出了利用航路点对飞行器的方位误差进行校正的方法,并对引起校正误差的主要因素进行了详细的分析;另外考虑到飞行器所选航路点距出发点距离一般都比较远,此时地球曲率已不能忽略,推导了地球曲率不可忽略时的方位校正算法;最后通过计算机仿真验证了航路点方位校正方法的有效性。The azimuth error is one of the main error sources of dead reckoning. The method is very effective that make use of landmark to improve the accuracy of azimuth alignment. The dead reckoning error is investigated. And an azimuth correction algorithm, using landmark as the information source, is proposed. In the proposed azimuth correction algorithm, the landmark chosen by the aircraft is usually far away from the start point, so the impact of earth curvature is taken into account to improve the correction effect. At last, the feasibility of correction algorithm is validated by computer simulations.

关 键 词：航位推算 航路点 方位校正 

分 类 号：V249.3[航空宇航科学与技术—飞行器设计]