Performance Analysis and Simulation Calculation of Marine Sextant

If you check the Index mirror of marine sextant from different angle, you will get different result. To solve the problem of marine sextant, in this article the checking method and principle of index mirror is analyzed, the problem existing in the design of marine sextant is studied. The method of simulation is adopted to calculate the vertical error of index mirror, and calculate the corresponding height measurement error, the poor distribution is formulated. The result to improve the measurement precision has very important practical significance.