YANG Jinxian, LI Mingqi, CHAO Lijun. Signals filtering processing algorithm of measurement while drilling in catastrophic state[J]. 2020, (10): 123-125+128.
YANG Jinxian, LI Mingqi, CHAO Lijun. Signals filtering processing algorithm of measurement while drilling in catastrophic state[J]. 2020, (10): 123-125+128. DOI: 10.13873/J.1000-9787(2020)10-0123-03.
In order to reduce the influence of random catastrophe signals on the precision of attitude calculation
a self-adjusting catastrophe filtering( SACF) algorithm is proposed. The measurement while drilling( MWD) system and the dynamic measurement equation are constructed. Catastrophe model is used to judge whether the observed values are catastrophic or not
and a filtering algorithm is designed. Simulated and actual drilling experiments are designed
and the performance of the proposed algorithm is compared with that of the unfiltered one. Experimental results show that the proposed algorithm can effectively deal with the catastrophic signal interference in strong interference environment
and improve the measurement precision of the system.