The assessment of navigation signal phase quadrature

In the navigation system, the accurate measurement of key indicators of the payload modulation signal can help identify the problems in system design. The phase quadrature is one of the important indicators. In this paper, analyzed the main reason of the phase quadrature measurement error, and established the phase quadrature measurement formulas under a constant envelope modulation mode. This paper solved the problem of the navigation signal cross-correlation for the phase quadrature measurement error. In the end, the validity of the correction method is verified in different simulation conditions.