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如何快速、准确地完成惯导系统的初始对准一直是惯导系统研究的关键技术，方位对准精度和对准时间的矛盾至今未能很好地得到解决。为解决这一问题，本文提出了双全球定位系统（ＧＰＳ）同惯性导航系统（ＩＮＳ）进行深组合的方法。仿真结果表明，该方法使方位对准时间缩短为不到２ｍｉｎ，精度达到１４．６７（″），较好地解决了方位对准问题，同时也提高了导航精度。
How to quickly and accurately complete the initial alignment of inertial navigation system has always been the key technology of inertial navigation system. The contradiction between azimuth alignment accuracy and alignment time has not been well solved so far. In order to solve this problem, this paper proposes a deep combination of dual-global positioning system (GPS) and inertial navigation system (INS). The simulation results show that this method can shorten the azimuth alignment time to less than 2min and the precision to 14.67 ("), which can well solve the azimuth alignment problem and improve the navigation accuracy.