Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2012.1650.1654YangChun-NingMaLong-HuaYueYa-ZhouLiHui1120121111In this study, a general scheme for implementation of attitude and velocity algorithm in Strapdown Inertial Navigation System (SINS) under real-time environment was presented. This real-time implementation scheme was formulated in a recursive form using two time-rate executions and utilized integer arithmetic only. The coding of the attitude and velocity algorithm was conducted by a navigation computer (such as DSP or FPGA). It is shown that the general real-time implementation of strapdown attitude and velocity algorithm can be used in strapdown inertial navigation system for any combinations of gyro incremental angle sample of mth minor interval and (m-1)th minor interval.]]>Lee, J.G., Y.J. Yoon, J.G. Mark and D.A. Tazartes,1990Park, C.G., K.J. Kim, J.G. Lee and D.Y. Chung,1999Ignagni, M.B.,1996Ignagni, M.B.,1998Roscoe, K.M.,2001Li, H., F.X. Yu, X.l. Zhou and H. Luo,2010