航空重力数据样条平滑滤波试验研究

Spline smoothing for airborne gravity data

采用B样条平滑滤波技术,对GT-1A航空重力勘查系统的测量数据进行了滤波试验研究,结果表明,通过选择合适的样条、平滑等参数,B样条平滑滤波技术在航空重力数据的低通滤波数据处理中可以发挥重要作用,获得与GT-1A系统滤波结果几乎同样满意的滤波效果,二者滤波结果差值的标准偏差可达±0.4mGal.

We do the experiment research of filtering GT-1A airborne gravity data using B-spline smoothing filters, and get some meaningful results. By selecting proper parameters such as spline and smoothing, these spline smoothing filters for airborne gravity data can get satisfactory filtering effect almost as good as GT-1A result, and the standard deviation of the discrepancy is within ±0. 4 mGal in comparison with GT-1A result.