摘要
模拟生成是解决辅助导航研究中数据源不足的有效手段,而准确反映所用地球物理场的分布特征是算法设计的关键.综合分析辅助导航的匹配定位方式与场源模拟限定,发现建立二维标量场是其基准数据库自动生成共同的基础.本文针对通常的骨架生成算法忽略初始边缘似真性的问题,提出了改进的扩展随机-相关骨架生成方法,并结合附加限定条件的分形细节生成算法建立了组合改进算法.最后采用均方差检验准则验证了其模拟生成二维标量场的匹配适用性.
Simulation is a desirable method to solve the problem of pre-survey fields＇ deficiency in aided navigation study, wilile the key of related algorithms is how to reflect geophysical field＇ s distribution characters nicely. After analyzing its inherent limitations and positioning modes, it can be deduced that generating 2-D scalar field is the fundamental in creating various reference databases. To amend the shortage of bone simulation algorithms which commonly ignoring edges＇ fidelity, improved random-relation bone simulation method with extension is p With restriction-added fractal detail simulation module, the combination algorithm with improvements is advanced. Then the matching feasibility of 2-D scalar field achieved by the above algorithm is testified with Mean Square Difference （MSD） criterion.
出处
《应用基础与工程科学学报》
EI
CSCD
2008年第4期472-477,共6页
Journal of Basic Science and Engineering
基金
国家“973”项目资助(513060301)
