伪码辅助载波的高精度角度测量方法

A Method of High-precision Angle Measurement Using Carrier Aided by PRN Code

摘要: 研究了采用短基线时高精度角度测量的问题．在基线长度受限制的情况下，为实时完成高精度的角度测量，需采用高频载波和准确确定载波的整周数．提出了一种基于伪码辅助载波的高精度角度测量方法，在伪码粗测的基础上，利用载波来完成高精度的角度测量．导出了该方法下无整周模糊的条件以及确定整周数的判据，载波频率的选择不受基线长度的制约，可以实时完成整周数求解．

Abstract: The problem of high-precision angle measurement based on short baseline is analyzed.In order to obtain high-precision angle measurement in real time under the condition of limited baseline length,high frequency carrier is used and the carrier-cycle needs to be accurately calculated.A method of high-precision angle measurement using carrier aided by PRN (pseudo-random noise) code is proposed to resolve this problem.With the help of the rough measurement results provided by PRN code,the high-precision angle measurement can be implemented by utilizing carrier.The condition of carrier-cycle un-ambiguity and the rule of carrier-cycle resolution are given.The proposed method can resolve the carrier-cycle in real time and the choice of the carrier frequency is not constrained by the length of the baseline.