CAJ | 학술논문

针对传统惯性/卫星组合导航方式的局限性,提出利用天空偏振光进行辅助导航的方法.研究了晴朗天空偏振光分布模式,初步揭示了理想大气偏振特性;分析了偏振光导航传感器的工作原理,为了将偏振光导航传感器输出的方位信息转化为航向角,推导了确定太阳相对位置的计算公式.在设计 SINS/GPS/偏振光组合导航系统结构的基础上,进行了动态仿真,结果表明:偏振光导航传感器提供的方位信息,有效修正了组合导航系统的航向角误差,航向角精度与传感器测角精度相当.基于偏振光的自主定向方法增强了系统导航性能,具有广阔的应用前景.
침대전통관성/위성조합도항방식적국한성,제출이용천공편진광진행보조도항적방법.연구료청랑천공편진광분포모식,초보게시료이상대기편진특성;분석료편진광도항전감기적공작원리,위료장편진광도항전감기수출적방위신식전화위항향각,추도료학정태양상대위치적계산공식.재설계 SINS/GPS/편진광조합도항계통결구적기출상,진행료동태방진,결과표명:편진광도항전감기제공적방위신식,유효수정료조합도항계통적항향각오차,항향각정도여전감기측각정도상당.기우편진광적자주정향방법증강료계통도항성능,구유엄활적응용전경.
In view of the limitations of conventional INS/GNSS integrated navigation method, an orienting technique based on polarized light was studied. First, the atmospheric polarization mode in clear sky was explored, and the ideal atmospheric polarization characteristic was revealed. Second, the principle of polarization navigation sensor was analyzed. In order to change the orientation value measured by polarization sensor to the heading, the calculation equations to determine solar position was derived. At last, the structure of SINS/GPS/Polarized-Light integrated navigation system was designed, and the dynamic simulation was carried out. The simulation results indicate that the system’s heading error can be corrected by information from polarization sensor effectively, and the heading accuracy is equivalent to that of polarization sensor. The independent orienting technique based on polarized light can enhance the system’s navigation performance and has wide application prospect.