Research on High Precision Coordinate Measurement Method Based on Maximum Likelihood Estimation

The rapid development of advanced manufacturing industry in China has put forward higher requirements for equipment technology level. For ship construction industry, high-precision three-dimensional coordinate measurement directly determines the level of ship equipment. Since the ship construction environment is very poor, traditional measuring method can not realize a high precision, and high efficiency coordinate measurement. In order to solve this problem, combining with the characteristics of the construction environment, this paper proposes a high accuracy coordinate measurement method based on maximum likelihood estimation, and a ship high precision navigation and positioning system has been invented. The simulationresults show that the proposed algorithm has better environment adaptability and robustness compared with the traditional positioning method. The position precision can reach under 1 mm, realizing the high precision coordinate measurement in harsh conditions