The application rule of half-wave signal magneto-optical modulation in spatial azimuth measurement

The purpose of this study is to summarize the application rule of half-wave signal magneto-optical modulation in azimuth measurement, and obtain the limit on modulation signal when establishing the azimuth measurement model. After analysis on the azimuth measurement system principle, the model of modulated signal are present according to Malous law, the application feasibility of the four half-wave signal magneto-optical modulation in azimuth measurement are discussed respectively, the azimuth measurement models based on mixed signal are present, and the reason why the AC signal cannot be used to establish the azimuth measurement model is analyzed.