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

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.

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.