Quantitative Analysis for Error Transferred of ATM Measurement Method Based on the ORSM System

In the current ORSM system, the target LOS direction error is existed in the station-center coordinate system. The essential principle about the measuring target LOS direction method by the attitude transformation matrix (ATM) is introduced. The fundamental cause about the error produced is analyzed. According to the different kinds of variable in the optics system, the several models of quantitative analysis for the error transferred in the measuring target LOS direction by the attitude transformation matrix are built. And then, the errors obtained from these models by reasonable data are worked out, and are compared with the actual errors. The results demonstrate these models´ effectiveness.