| 自适应卡尔曼滤波在航空重力异常解算的应用研究 |
| |
| 引用本文： | 郑崴,张贵宾.自适应卡尔曼滤波在航空重力异常解算的应用研究[J].地球物理学报,2016,59(4):1275-1283. |
| |
| 作者姓名： | 郑崴 张贵宾 |
| |
| 作者单位： | 1. 中国地质大学(北京)地球物理与信息技术学院, 北京 100083;2. 河南科技学院信息工程学院, 河南新乡 453003 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划)(2011AA060501)资助. |
| |
| 摘 要： | 依据航空重力测量基本原理,构建了航空重力异常解算的卡尔曼滤波模型,将新息自适应卡尔曼滤波器(IAE,Innovation based Adaptive Estimation)应用于量测噪声未知的航空重力异常解算.针对IAE滤波器滑动窗口宽度难以准确确定的问题,通过对多个不同滑动窗口新息协方差估计的加权平均,获得改进的IAE滤波器,该IAE滤波器不仅具有量测噪声自适应估计能力,还能实现滑动采样窗口的优化选取.试验结果表明,IAE滤波器可以降低因量测噪声统计信息不明引起的解算误差,改进IAE解算的重力异常误差约为1mGal.
|
| 关 键 词： | 航空重力异常解算 自适应卡尔曼滤波 新息 量测噪声 |
| 收稿时间： | 2015-09-14 |
Application research on adaptive Kalman filtering for airborne gravity anomaly determination |
| |
| ZHENG Wei,ZHANG Gui-Bin.Application research on adaptive Kalman filtering for airborne gravity anomaly determination[J].Chinese Journal of Geophysics,2016,59(4):1275-1283. |
| |
| Authors: | ZHENG Wei ZHANG Gui-Bin |
| |
| Institution: | 1. Department of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China;2. Department of Information Engineering, Henan Institute of Science and Technology, Xinxiang Henan 453003, China |
| |
| Abstract: | Based on the basic principle of airborne gravimetry, Kalman filtering model for airborne gravity anomaly determination is established and innovation-based adaptive estimation Kalman filter (IAE) is applied to estimate the airborne gravity anomaly when measurement covariance is unknown. At the same time, improved IAE filter installing several innovation covariance estimators is designed to reduce the difficulty of sampling window width selection. It is can be seen from the experimental result that IAE is able to reduce gravity anomaly determination errors caused by lack of statistical information of measurement noise. Moreover, the improved IAE filter can decrease the rate of determination errors introduced by the improper selection of sampling window width, and the error of gravity anomaly determined by improved IAE is nearly 1 mGal. |
| |
| Keywords: | Airborne gravity anomaly determination Adaptive Kalman filtering Innovation Covariance of measurement noise |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
| 点击此处可从《地球物理学报》下载免费的PDF全文 |
|
