舰载经纬仪船摇误差修正方法研究

Research on Vessel-shake Error Correction of Shipborne Theodolite

针对海上舰船摇摆引起的舰载经纬仪巨大定位及测量误差问题,提出一种船摇误差修正的高精度解决方案。利用惯性导航系统测量出的船体摆动姿态角和GPS局部基准定位信息,对舰载经纬仪实时站址数据和测角数据做了船摇修正处理,并研究了站址误差对测角精度的影响。通过对修正前后数据做误差比对分析,提高了海基测控装备外弹道的测量精度。试验证明,该方法简单、实用,修正后精度满足使用要求,可以推广应用。

Aiming at the great error of positioning and measurement of a shipborne theodolite caused by vessel shaking, a high precision solution for correcting the vessel-shake error is proposed. Vessel-shake attitude angel and GPS local baseline positing information are measured by an inertial navigation system. The shipborne theodolite da- ta of real-time position and measuring angle are performed to vessel-shake error correction. And the influence on measuring angle accuracy from position error is researched. According to the data error comparison analysis before and after correction, the exterior trajectory measuring accuracy of sea-based measurement and control equipments is improved. Experimental results show that the method is simple and applicable. The corrected accuracy can meet the requirements, and can be applied widely.