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推导基于卡尔曼滤波的海底地形反演算法,算法通过利用重力梯度仪测量重力梯度异常,提高地形反演的精度和分辨率。结合地形坡度计算理论和矩形棱柱法,建立基于卡尔曼滤波的系统方程和量测方程。对算法进行仿真,分析地形均值误差、随机误差和梯度仪测量精度对反演精度的影响,最后的区域反演仿真结果表明:反演后的地形在精度和分辨率上都有所提高。 更多还原

【Abstract】 A terrain estimation algorithm based on Kalman filter is proposed.Combining with gradient anomaly measured by gravity gradiometer,the algorithm achieves the purpose of terrain estimation by improving the accuracy and resolution of a low-resolution priori terrain.By introducing slope theory and rectangular prism method,system error model and measure equation of the Kalman filter are built first.After that a simulation research is carried out to investigate the effect of algorithm.The simulation a... 更多还原