重力匹配导航中的重力图细分重构方法研究

Restructuring of Gravity Map in Gravity Matching Navigation

重力匹配导航需要高精度的数字重力图，然而在许多情况下无法得到精确的重力场数据。本文提出一种加权非线性拟合细分技术，对原始重力场图进行重构．仿真结果表明，该方法可有效地提高重力场图的分辨率，并且边缘过渡更为平缓，可满足高精度导航的需要．

Gravity matching navigation needs data gravity map of high precision, but precise gravity data cannot be accepted in many cases. A technology of weighed nonlinear fitting subsection is introduced to restructure the original gravity map. The simulation result shows that this method can enhance the resolving power of gravity map and make the transition of verge smoother so that it can match the needs of high precision navigation.