Research On Error Compensation Method Of Planar Electronic Compass

With the development of national strength and the improvement of people's living standards,the increase in national exploration activities and the increase in private driving demand have arisen.The role of navigation systems in national and private travel is increasingly important.In either case,the deviation of the navigation system must lead to unpredictable consequences.As the core component of the navigation system,the electronic compass bears the most important work,but the electronic compass is susceptible to measurement errors caused by external magnetic environment interference,causing interference to the navigation system.Therefore,in order to further improve the reliability of the navigation system and reduce the measurement error of the electronic compass,it is of great social and theoretical significance to study the error compensation method of the electronic compass.This paper mainly studies the error source and error compensation method of electronic compass.In order to solve the shortcomings and shortcomings of the current electronic compass error compensation method,the paper analyzes and studies the error source and error compensation method of the electronic compass,and proposes a hard magnetic field for the electronic compass with different quality errors.Method of interference error and soft magnetic interference error.The details are as follows:1.Firstly,the paper analyzes the hard magnetic interference error of electronic compass,and studies the source of hard magnetic interference error and the measurement error of electronic compass caused by hard magnetic interference.It is found that the hard magnetic interference will cause the zero drift of the electronic compass measurement data.According to the nature that the hard magnetic interference error belongs to the stability error,the least squares algorithm is selected as the compensation algorithm for the hard magnetic interference error.The feasibility of the algorithm is verified by simulation experiments.2.The paper studies the soft magnetic interference error of the electronic compass.According to the nature of the error,three error compensation algorithms are determined,which are Kalman filter algorithm,particle filter algorithm and adaptive Kalman filter algorithm.Through the Allan analysis of variance,the data before and after compensation are quantified.After the Allan variance analysis,the value of the zero-bias instability noise and the value of the quantization noise of the data before and after compensation can be obtained.At the same time,the compensation effects of the three filtering algorithms are evaluated and compared with the values of the two noises.The paper designs a simulation experiment for the above various algorithms and verifies the feasibility of the algorithm.3.Taking the two more commonly used electronic compasses on the market as an example,an error compensation experiment was designed.In the hard magnetic interference error compensation experiment,the least squares method can effectively remove the zero drift phenomenon of the electronic compass.In the soft magnetic interference error compensation experiment,the adaptive Kalman filter algorithm has the best compensation effect,which can not only correct the deviation of the electronic compass measurement angle,but also effectively remove the data noise.The experimental results show that the new error compensation method proposed by the thesis is correct and feasible.Figure [71] Table [10] Reference [51]...