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中文摘要：
为提高寻北系统的寻北效率，提出了一种任意二位置陀螺寻北模型，可以在相差较小的2个位置进行信号采集，减少转台转动时间，在一定程度上节省了整个寻北过程的时间。为进一步提高寻北精度，引入小波阈值消噪方法，提出了一种新的双参数可调阈值函数，表达式简单，无需分段取值易于计算。研制原理样机进行了任意二位置寻北试验，结果表明：160s内的寻北精度优于0．02°，在一定程度上节省了寻北时间，新阈值函数消噪大大提高了寻北精度。
英文摘要：
In order to improve the efficiency of north finder, a gyro north finder model for arbitrary two- position north finding is presented. It can collect the signals in two places which are less different, reduce the rotation time of turntable, and save the whole north finding time to some extent. In order to further improve the north finding accuracy, a wavelet threshold de-noising method is introduced, and a new double- parameter adjustable threshold function is proposed. The function is simple and easy to calculate without segmental values. The north-seeking experiment in arbitrary two-position is conducted on the developed principle prototype. The results show that the north finding accuracy within 160 s is higher than O. 02°, the north-finding time is saved, and the new de-noising threshold function greatly improves the north finding accuracy.
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