惯导平台式重力测量技术实现及应用

详细阐述了解析方位双轴惯导平台式重力测量的工作原理,并通过基于方位余弦积的惯导力学编排解决了极区工作问题。在常规平台式重力测量数据处理方法的基础上,针对高动态环境提出了基于Kalman滤波的运动扰动修正方法。在此基础上研制了ZL11-1A型国产惯导平台式海洋重力仪。通过与国外主流重力仪产品海上同船作业比对,结果表明,该型重力仪在高海况下测量精度依然优于1mGal,满足重力测量作业要求。

Realization and Application of Inertial Navigation Platform Gravity Measurement Technology

In this paper, the working principle of analytical azimuth dual axis inertial platform gravimetry is described in detail, and the polar region operation problem is solved by the arrangement of inertial navigation mechanics based on azimuth cosine product. Based on the data processing flow of general platform gravity survey, a motion disturbance correction method based on Kalman filter is proposed for processing the data obtained in high dynamic environment. Based on the above technical scheme, a domestic inertial navigation platform marine gravimeter ZL11-1A is developed and its composition is introduced. The performance and accuracy of this type of equipment are verified by comparing it with its foreign counterparts on the same ship at sea. The test results show that the measurement accuracy is still better than 1mGal under high sea conditions, which meets the operational requirements.