摆式陀螺寻北仪快速寻北的时差逆转点法  

Time Difference Reversal Point Method for Pendulous Gyroscope Rapid North-seeking

作　　者：周召发[1] 常振军 张志利[2] 

机构地区：[1]西北工业大学,陕西西安710072 [2]第二炮兵工程大学,陕西西安710025

出　　处：《探测与控制学报》2012年第4期64-66,70,共4页Journal of Detection & Control

基　　金：国家自然科学基金项目资助(41174162)

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″。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.

关 键 词：寻北仪 摆式陀螺 算法 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]