The Positioning Error Analysis of the LOFIX Method to the Underwater Target on Considering Multiple Factors

LOFIX is the main positioning method for passive omnidirectional sonar buoys, but the accuracy and stability of this method are affected by many factors, which makes it ineffective in carrying out the underwater target searching task. According to the positioning principle of LOFIX, this paper mainly analyzes the errors caused by the frequency domain estimation, position of buoys and marine acoustic propagation environment from the theoretical perspective. And then using the computer to simulate the positioning errors caused by the above factors, which has certain reference significance for how to reduce the positioning error of LOFIX and practical engineering applications.