信息与电子工程2011，Vol.9Issue(6)：680-683,4.
地形特征对粒子滤波导航算法精度影响分析
Influence of topographic feature on particle filter terrain navigation algorithm
摘要
Abstract
Terrain navigation is the method that can estimate the position of aircraft from the terrain information of the area below the aircraft. As terrain height is a strongly nonlinear model, terrain navigation can be solved as a nonlinear state estimation problem, and the accuracy of its algorithm is directly influenced by the topographic feature. After deducing the particle filter navigation algorithm, an emphasized study is conducted about the influence of topographic feature on the calculation of posterior probability, and Cramer-Rao Lower Bound(CRLB). The conclusion is that the gradient and comparability in topographic feature are the essential characters to cause effects on the result of particle filter algorithm, which can provide reference for the flight zone selection and the flight route planning.关键词
地形特征/地形导航/粒子滤波/Cramer-Rao下界Key words
topographic feature/terrain navigation/particle filter/Cramer-Rao lower bound(CRLB)分类
信息技术与安全科学引用本文复制引用
孙立国,李欣,李世丹,王德生..地形特征对粒子滤波导航算法精度影响分析[J].信息与电子工程,2011,9(6):680-683,4.
