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中文摘要：
针对现有粗寻北方法时间长精度差的不足,结合时差法和逆转点法提出一种综合快速寻北的时差逆转点法。由陀螺仪常数及地理信息求出摆动周期,然后测量摆动曲线中一个逆转点和两个相关点的时刻与摆幅,代入时差逆转点法模型解算出真北方向。通过实验验证,测量时间短,精度优于传统粗寻北方法。结合积分法精寻北,在7min内,寻北精度达到7″。
英文摘要：
In order to overcome the deficiencies existed in rough north-seeking method on time and precision,a comprehensive rapid north-seeking time difference reversal point method was presented,which combined the time difference method and the reversal point method.The cycle of gyro axis was reckoned from the constants of gyro and geographic information.The true North direction was calculated by measuring the time and swing of a reversal point and the two related points which were introduced into model of time difference reversal point.It was proved that the measuring time was shortened,and the accuracy was better than traditional thick north-seeking methods.The North-seeking accuracy was up to 7″ within 7 minutes by combining with refined integral method.
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