An improved fully-coupled vehicle positioning process and system thereof can substantially solve the problems encountered in global positioning system-only and inertial navigation system-only, such as loss of global positioning satellite signal, sensibility to jamming and spoofing, and inertial solution's...http://www.google.com.hk/patents/US6167347?utm_source=gb-gplus-share專利 US6167347 - Vehicle positioning method and system thereof
