CAJ | 학술논문

可观测性分析是组合导航系统进行滤波器设计的重要内容，直接影响状态估计时的收敛速度和收敛精度，因而需要对状态变量的可观测程度进行定量分析。文章针对基于卫星的惯导系统在机动方式时的可观测性分析进行研究，改进了组合导航系统的可观测度，省略了外观测量的求取，有效减少了计算量，简化了分析步骤。仿真结果证明了该方法的有效性。
가관측성분석시조합도항계통진행려파기설계적중요내용，직접영향상태고계시적수렴속도화수렴정도，인이수요대상태변량적가관측정도진행정량분석。문장침대기우위성적관도계통재궤동방식시적가관측성분석진행연구，개진료조합도항계통적가관측도，성략료외관측량적구취，유효감소료계산량，간화료분석보취。방진결과증명료해방법적유효성。
Observability analysis is important part of integrated navigation system which needs design filter, it di-rectly affects the convergent speed and precision of the states estimated, so the quantitative analysis of the states observability is actual needed. Observability analysis of INS based on satellite data when the body was moving was studied in this paper. The observable degree of integrated navigation system was ameliorated, and the outer measurement calculation was omitted, which made calculation capacity decrease effectively and made analysis steps predigest. The result of simulation proved the validity of this method.