【摘要】 星光导航是船舶航海中一种重要的自主导航技术。针对海洋环境的特点以及目前海上星光导航存在的主要问题,提出了一种船载鱼眼相机星光导航技术,利用超大视场的鱼眼相机对全天区可见星体和海天线同时成像,海天线为星高度角的观测确定了水平基准,通过导航定位算法的解算,可实现对海上船舶高精度、智能化、高效率的导航定位,同时具有设备简单、可靠性高的优点。为了验证船载鱼眼相机星光导航技术的性能,进行海上观测实验,实验结果表明:该技术平均能够以90 s的时间达到0.9 nmile的定位精度,具有较好的海上导航精度和效率。更多还原

【Abstract】 starlight navigation is an important autonomous navigation technology in maritime application. Aiming at the characteristics of the marine environment and the main problems existing in current starlight navigation, a kind of novel starlight navigation technology is proposed based on shipborne fisheye camera. The fisheye camera with large field of view(FOV) is used to image the visible stars and sea-sky line in a simultaneous way. The seasky line determines the horizontal datum for the altitude angle of star. Through applying the algorithm, the navigation can be achieved with high accuracy, intelligence, and high efficiency for marine vessels, and it is characterized by concise equipment and high reliability. In order to verify the performance of the technology, the researchers conduct an offshore observation experiment, and the results show that it can achieve an accuracy of0.9 nmiles with a time of 90 s. It is concluded that it has good navigation efficiency and accuracy at sea.更多还原