Initial alignment could not be done by MIMU itself because of its low precision, so a method of using electrical compass in initial alignment is presented.
由于MIMU精度不高，无法实现自对准，所以系统采用电子罗盘辅助它完成初始化对准。
One of the key technologies of SINS is the initial alignment, whose accuracy affects the precision of SINS and whose speed effects the response rapidity of the weapon.
初始对准是捷联式惯导系统关键技术之一。 初始对准精度直接影响捷联式惯导系统的工作精度，初始对准时间也是反映武器系统快速反应能力的重要战术指标。
Experimental results show preliminarily that our open-loop method for obtaining gyro drift can meet the precision and speed requirements needed for initial alignment of INS in China.
实验证明，开环测漂方案既能满足精度要求，又能保证快速性，切合工程实际的需要。
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